Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. |
#2
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
"john gurney" wrote in message
... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. -- Woody harrogate three at ntlworld dot com |
#3
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
Woody wrote the following:
"john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Then why is there a toggle switch on my 4 cell charger to switch to either Ni-MH or Ni-Cad batteries? -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
#4
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
In article ,
A. Baum wrote: The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. No straight answer from you either, then. -- Richard |
#5
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
"john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. Depends on the charger type - timer or smart charge. Details on here - http://www.doityourself.com/stry/can...a-nicd-battery fixed time chargers may cause, damage smart chargers shouldn't. Smart chargers often have an LCD display indicating the charge state of freshly mounted batteries, and vary the charge accordingly. michael adams .... |
#6
Posted to alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
"john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So, there was nothing printed on the package stating what kind of batteries the charger was meant for, or how many it could charge at once? I have a Rayovac charger I selected because it charges NiCad and NiMH batteries, and will do up to eight AAs at one time. But, you know, I read the package. |
#7
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On Nov 30, 11:28*am, "A. Baum" wrote:
On Tue, 30 Nov 2010 16:22:14 +0000, Woody wrote: "john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Uh, Nicads where charged mostly by time, NmMh by current sensing. You would want to monitor a nicad very closely in a NmMh charger if it didn't complain and abort the charge in the first place. My Duracell charger will not charge Nicad. Not even attempt to charge them. *- Hide quoted text - - Show quoted text - As I understand it NiMh peak at a higher voltage than Nicad, voltage drop is the best way to monitor a cells charge, ive done it for my RC car packs. He can do the "feel if its warm test", when they start to get warm they are 100% charged. Better is he could simple slip volt meter leads in the charger and monitor if it does cut off at voltage peak or continue charging and cook the batteries. It may or may not be fine. My Nimh charger does Nicads on Volts peak cutoff. A good charger should charge anything. |
#8
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On Nov 30, 5:33*pm, willshak wrote:
Woody wrote the following: "john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Then why is there a toggle switch on my 4 cell charger to switch to either Ni-MH or Ni-Cad batteries? Because it's less intelligent than my charger 4 cell charger which charges either, automatically. MBQ |
#9
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On Nov 30, 5:23*pm, "A. Baum" wrote:
On Tue, 30 Nov 2010 16:20:33 +0000, john gurney wrote: Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time).. When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. Any idiot with a grain of common sense (seems to rule you out) also knows an intelligent charger can cope with both types. MBQ |
#10
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
"willshak" wrote in message
m... Woody wrote the following: "john gurney" wrote in message ... snip Then why is there a toggle switch on my 4 cell charger to switch to either Ni-MH or Ni-Cad batteries? Bill I think it's because Ni-Mh charge at a slightly higher voltage? Steve Terry -- Quidco cashback Sign-up Bonus of £1.25 when you signup at: http://www.quidco.com/user/613515/55307 |
#11
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On 30/11/2010 19:02, Man at B&Q wrote:
On Nov 30, 5:23 pm, "A. wrote: NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. Any idiot with a grain of common sense (seems to rule you out) also knows an intelligent charger can cope with both types. MBQ OK, handbags at dawn... Before you two get into a real slagfest might I point out that those two statements are not mutually exclusive? Andy |
#12
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
"john gurney" wrote in message
... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. If that is what the instructions say why would you expect them to be wrong? -- Michael Chare |
#13
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On Nov 30, 4:20*pm, "john gurney" wrote:
Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. You couldnt get a straight yes or no anwer because there is no straight yes or no answer. To charge a nicd or nimh cell you need a charge current that matches the cells (or is less), plus if the charge is faster than 14hr rate you need some sort of auto charge shutoff. Generally speaking, NiMH AA cells charge at much higher current than AA nicads, so generally you cant stick nicads into a nimh charger - but of course its not that simple. I cant remember what old 450mAh nicads want, somewhere in teh region of 40mA though. Your charger probably delivers far too much - it would charge them, but the AAs would die very early. NT |
#14
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
"john gurney" wrote in message
... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. Sounds like you've bought a bit of a pup, really. It doesn't even charge particularly quickly (8-10 hours for 1800 mAh I think). The ones I use cost £10 with 4 free 2100 mAh NiMH AA batteries (or vice versa), charge 4 AA, 4 AAA or 2 PP3, NiCd or NiMH, but take 19 hours for 2100 mAh NiMH AAs. I guess at that charge rate they won't damage anything. (They are Uniross but Argos don't seem to sell anything comparable now.) -- Max Demian |
#15
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
There are a lot of well educated idiots who won't know that factoid.
That said, I do believe you're right. -- Christopher A. Young Learn more about Jesus www.lds.org .. "A. Baum" wrote in message news NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. |
#16
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
A. Baum wrote:
On Tue, 30 Nov 2010 16:22:14 +0000, Woody wrote: "john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Uh, Nicads where charged mostly by time, NmMh by current sensing. No. Voltage sensing. It works on both. Its easier on NiCad since the voltage change is greater. Delta peak chargesr that work on NiMh work on Nicad. The reverse *may* not be true. You would want to monitor a nicad very closely in a NmMh charger if it didn't complain and abort the charge in the first place. My Duracell charger will not charge Nicad. Not even attempt to charge them. blather. Learn the facts befor spouting. |
#17
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
willshak wrote:
Woody wrote the following: "john gurney" wrote in message ... Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Then why is there a toggle switch on my 4 cell charger to switch to either Ni-MH or Ni-Cad batteries? slightly different delta peak probably. I,e, crappy charger. Most will do either. |
#18
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
Steve Terry wrote:
"willshak" wrote in message m... Woody wrote the following: "john gurney" wrote in message ... snip Then why is there a toggle switch on my 4 cell charger to switch to either Ni-MH or Ni-Cad batteries? Bill I think it's because Ni-Mh charge at a slightly higher voltage? irrelevant. Nickel hargers feed current and look for a voltage DROP as the charged state is achieved. Chargers that are run this way limit current, and switch off when they detect fully charged conditions. They will charge as few or as many cells as they have supply voltage to force current into. Steve Terry |
#19
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
A. Baum wrote:
On Tue, 30 Nov 2010 16:20:33 +0000, john gurney wrote: Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. No they dont. As people who have used them and charged them know. They are VERY similar. Constant current and look for a drop in terminal voltage and switch off then. Only difference is the drop n a NiMh is a lot less, so it needs more sensitive chargers. |
#20
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
Richard Tobin wrote:
In article , A. Baum wrote: The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. No straight answer from you either, then. He only knows what every idiots knows, which is false anyway, so why boyher? -- Richard |
#21
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
Andy Champ wrote:
On 30/11/2010 19:02, Man at B&Q wrote: On Nov 30, 5:23 pm, "A. wrote: NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. Any idiot with a grain of common sense (seems to rule you out) also knows an intelligent charger can cope with both types. MBQ OK, handbags at dawn... Before you two get into a real slagfest might I point out that those two statements are not mutually exclusive? They almost are. No one makes a a NiCd only charger as NiMh chargers will charge either. Andy |
#22
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On Tue, 30 Nov 2010 17:23:03 +0000 (UTC), "A. Baum" wrote:
On Tue, 30 Nov 2010 16:20:33 +0000, john gurney wrote: Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. So I rang the free phone number and said I've got a lot of the older Ni-Cd batteries (like you have...right?) and would it do any damage to the batteries or the charger to charge them? Could I get a straight answer, could I hell. I was very persistant, but she would not answer in a straight way. When I asked if I could be transferred to a technical department, she said, "we have 'all' the information". All you staring blankly out of the window, waiting for something to happen... It's a free phone number...... 0800716434 The question I kept repeating was, will any damage be done to either the charger or to the older ni-cd batteries, if charged up in this charger? If you can get a straight answer from this women you're a better man than I. NiCad and NmMh have different charge needs. Any idiot with a grain of common sense knows this. Actually, they're very close. The only important difference is that dV/dt terminal charge sensing won't work on NiMH. Other than that they're *very* similar. |
#24
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
On 30/11/2010 16:20, john gurney wrote:
Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. snip whinge The correct answer is to clearly determine exactly what you need and then take that specification with you when purchasing to ensure that you are buying the correct item. |
#25
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
In article , A. Baum
wrote: On Tue, 30 Nov 2010 16:22:14 +0000, Woody wrote: The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Uh, Nicads where charged mostly by time, NmMh by current sensing. Erm, actually both types are "charged" by passing a current thought them. :-) The *sensing* of when they are fully "charged" can be done by various methods (or none) depending on all sorts of details, etc. Slainte, Jim You would want to monitor a nicad very closely in a NmMh charger if it didn't complain and abort the charge in the first place. My Duracell charger will not charge Nicad. Not even attempt to charge them. -- Please use the address on the audiomisc page if you wish to email me. Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html Audio Misc http://www.audiomisc.co.uk/index.html |
#26
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
|
#27
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
Jim Lesurf wrote:
In article , A. Baum wrote: On Tue, 30 Nov 2010 16:22:14 +0000, Woody wrote: The answer is no, it will not hurt the Ni-Cds provided the charge current is within the range of the cells. Uh, Nicads where charged mostly by time, NmMh by current sensing. Erm, actually both types are "charged" by passing a current thought them. :-) The *sensing* of when they are fully "charged" can be done by various methods (or none) depending on all sorts of details, etc. In all cases its done by sensing voltage. Nickel cells drop voltage when fully charged. Lithium polymer cells are fully charged at around 4.2v per cell. Lithium iron cells its lower but similar. Leda acid is about 2.2v per cell. The beauty of nickel chargers is they don't care how many cells are in the pack. Once they detect a falling voltage, they can shut off. Its been an issue with smart lithium chargers. A half charged 7 cell pack that looks like a flat 8 cell pack wont last long if the charge goes to 8x4.2v...:-) |
#28
Posted to free.uk.diy.home,uk.d-i-y,24hoursupport.helpdesk,uk.tech.digital-tv,alt.home.repair
|
|||
|
|||
only Ni-Mh batteries, a better man than I
john gurney wrote: Just bought a Duracell battery charger yesterday for rechargeable AA and AAA batteries. (model no CEF24UK) The first disappointment was that it only charges *two* AA or two AAA at a time. (usually chargers of this size charge four batteries at a time). When I got home it specifically says in the instructions only to charge Ni-mh batteries, and not any others. [snip] From ://batteryuniversity.com/learn/article/charging_nickel_based_batteries Good explanation about charging NiCd and NiMH batteries. Near the end of the article one of the statements is: "A charger for nickel-metal-hydride can also accommodate nickel-cadmium, but not the other way around. A charger designed for nickel-cadmium would overcharge the nickel-metal-hydride battery. A well-designed charger is a reasonably complex device. Taking short cuts will cost the user in the long run. Choosing a well-engineered charger will return the investment in longer lasting and better performing batteries." Please read the whole article for better info. Buffalo |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
UPS batteries | Electronics Repair | |||
Batteries | Metalworking | |||
New Batteries | UK diy | |||
Batteries | UK diy | |||
14.4v batteries | UK diy |