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#1
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Rechargeable batteries - life expectancy
I found a few rechargeable batteries that had not been used for at
least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? |
#2
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Rechargeable batteries - life expectancy
On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote:
I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? It depends....... I have an HP PDA not used since about 2005 and the batteries won't hold charge. I have a JVC badged digital camera last used in 2005 with several spare batteries and all seem to hold charge. So it probably depends on the size of the battery, the chemistry and the manufacturer. Cheers Dave R -- AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64 |
#3
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Rechargeable batteries - life expectancy
On 04/12/2019 16:42, David wrote:
On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? It depends....... I have an HP PDA not used since about 2005 and the batteries won't hold charge. I have a JVC badged digital camera last used in 2005 with several spare batteries and all seem to hold charge. So it probably depends on the size of the battery, the chemistry and the manufacturer. NiMh and LIPO will in general be destroyed, but Nicad can take it. Cheers Dave R -- Theres a mighty big difference between good, sound reasons and reasons that sound good. Burton Hillis (William Vaughn, American columnist) |
#4
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Rechargeable batteries - life expectancy
On Wed, 4 Dec 2019 17:09:58 +0000, The Natural Philosopher
wrote: On 04/12/2019 16:42, David wrote: On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? It depends....... I have an HP PDA not used since about 2005 and the batteries won't hold charge. I have a JVC badged digital camera last used in 2005 with several spare batteries and all seem to hold charge. So it probably depends on the size of the battery, the chemistry and the manufacturer. NiMh and LIPO will in general be destroyed, but Nicad can take it. Your avvin a laff, mate. Even good quality NiCads would grow whiskers if they were left discharged for any length of time. |
#5
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Rechargeable batteries - life expectancy
In message , Custos Custodum
writes On Wed, 4 Dec 2019 17:09:58 +0000, The Natural Philosopher wrote: On 04/12/2019 16:42, David wrote: On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? It depends....... I have an HP PDA not used since about 2005 and the batteries won't hold charge. I have a JVC badged digital camera last used in 2005 with several spare batteries and all seem to hold charge. So it probably depends on the size of the battery, the chemistry and the manufacturer. NiMh and LIPO will in general be destroyed, but Nicad can take it. Your avvin a laff, mate. Even good quality NiCads would grow whiskers if they were left discharged for any length of time. Hum. Connect a charged NiCad in parallel and vaporise the whiskers:-) -- Tim Lamb |
#6
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Rechargeable batteries - life expectancy
"Jethro_uk" wrote in message ... On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? Does it matter Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. My eneloops have lasted much longer than that. I wouldn't be surprised if they are less environmentally friendly than regular disposable ones. |
#7
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Rechargeable batteries - life expectancy
In article ,
Jethro_uk wrote: Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. They've save me a fortune on an old rather power hungry mouse. -- *I didn't drive my husband crazy -- I flew him there -- it was faster Dave Plowman London SW To e-mail, change noise into sound. |
#8
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More Heavy Trolling by Senile Nym-Shifting Rodent Speed!
On Thu, 5 Dec 2019 05:17:45 +1100, Ray, better known as cantankerous
trolling senile geezer Rodent Speed, wrote: Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. My eneloops have lasted much longer than that. BG Auto-contradicting senile asshole! -- Kerr-Mudd,John addressing senile Rot: "Auto-contradictor Rod is back! (in the KF)" MID: |
#9
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Rechargeable batteries - life expectancy
On 04/12/2019 16:32, Scott wrote:
I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). They may never have been able to power a cordless mouse even when new. Rechargeable batteries have a lower terminal voltage than conventional single use alkaline cells. At low currents this can matter some devices shutdown when the cell reaches a certain voltage to help prevent leaks. My desk phone display will not run at all on rechargables as the LCDs cannot produce black with the limited voltage. Current requirement is almost nil but without enough voltage the display just doesn't work. Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? Leaving them flat for a long time or overcharging them will both seriously shorten battery life. Check them on something with a more realistic load like a torch and see how long they can power that for. Some battery technologies handle abuse better than others and in general the higher the energy density the less happy it is about being abused. It is worth giving them a charge discharge cycle to see if they wake up. -- Regards, Martin Brown |
#10
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Rechargeable batteries - life expectancy
On 04/12/2019 17:38, Jethro_uk wrote:
On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? Does it matter Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. They should last at least a couple of years (or more) if you look after them and use them in rotation. Leave some dead flat in a drawer or continuously on charge and you will more than likely wreck them. I wouldn't be surprised if they are less environmentally friendly than regular disposable ones. NiCads certainly were. NiHM and Lithium less so but I do wonder about the mining of lithium salts for green electric vehicles being displaced environmental damage of the out of sight out of mind third world sort. https://www.wired.co.uk/article/lith...ronment-impact I have some old WWII surplus NiFe cells that are still going - they are wet plate, heavy and low capacity by modern standards but they are also virtually indestructible! Silver zinc from the same source gave up long since - perhaps no surprise they were not intended for many cycles. https://www.sciencedirect.com/scienc...78775399001640 -- Regards, Martin Brown |
#11
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Rechargeable batteries - life expectancy
On 04/12/2019 16:32, Scott wrote:
I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? I've not had a single battery fail - that's over about 10 years, with about 30 in use at any one time. And if any have deteriorated in terms of capacity or ability to hold a charge, it's not affected any in a way I've noticed. -- Cheers, Rob |
#12
Posted to uk.d-i-y
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Rechargeable batteries - life expectancy
On Wednesday, 4 December 2019 16:32:07 UTC, Scott wrote:
I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? NiCd & NiMH aren't worried by sitting flat. I'd charge them, not fit them then fit them to the mouse a week later, see if they've self discharged or whether they then run 5 minutes. Should narrow down the problem. If they're self discharging quickly you can get a bit more life by zapping them, but not much, they soon short out again. AAs & AAAs are 2 for £1 at poundland anyway. NT |
#13
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Rechargeable batteries - life expectancy
wrote in message ... On Wednesday, 4 December 2019 16:32:07 UTC, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? NiCd & NiMH aren't worried by sitting flat. I'd charge them, not fit them then fit them to the mouse a week later, see if they've self discharged or whether they then run 5 minutes. Should narrow down the problem. If they're self discharging quickly you can get a bit more life by zapping them, but not much, they soon short out again. AAs & AAAs are 2 for £1 at poundland anyway. There is also the difference between good and lousy chargers. At one time I discovered that the Panasonic cordless phone would charge what the dedicated charger wouldnt charge properly. |
#14
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Rechargeable batteries - life expectancy
On Thu, 5 Dec 2019 05:17:45 +1100, Ray wrote:
"Jethro_uk" wrote in message ... On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? Does it matter Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. My eneloops have lasted much longer than that. I wouldn't be surprised if they are less environmentally friendly than regular disposable ones. In an electric toothbrush primary AA cells last up to 3 weeks but lose power after about 2 weeks so the torque drops and the head will stall if there's much resistance. The Eneloop & Fujitsu Pros last a month easily. I swap them every month to avoid going too low. -- Peter. The gods will stay away whilst religions hold sway |
#15
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Lonely Auto-contradicting Psychotic Senile Ozzie Troll Alert!
On Thu, 5 Dec 2019 09:19:21 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again: There is also the difference between good and lousy chargers. At one time I discovered that the Panasonic cordless phone would charge what the dedicated charger wouldn¢t charge properly. I'm gonna discharge you here until you are flat! Wanna bet, my senile punching bag? -- dennis@home to retarded senile Rot: "sod off rod you don't have a clue about anything." Message-ID: |
#16
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Rechargeable batteries - life expectancy
On Wed, 4 Dec 2019 18:11:00 +0000, Tim Lamb
wrote: In message , Custos Custodum writes On Wed, 4 Dec 2019 17:09:58 +0000, The Natural Philosopher wrote: On 04/12/2019 16:42, David wrote: On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? It depends....... I have an HP PDA not used since about 2005 and the batteries won't hold charge. I have a JVC badged digital camera last used in 2005 with several spare batteries and all seem to hold charge. So it probably depends on the size of the battery, the chemistry and the manufacturer. NiMh and LIPO will in general be destroyed, but Nicad can take it. Your avvin a laff, mate. Even good quality NiCads would grow whiskers if they were left discharged for any length of time. Hum. Connect a charged NiCad in parallel and vaporise the whiskers:-) I'm not sure a single cell would work with anything but newly formed whiskers. I used to charge up a really big capacitor (5-10000 uF) to around 20 volts and zap the whiskers with that. Once started, The whiskers tend to re-form but if the cell is kept charged it will usually auto-zap. |
#17
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Rechargeable batteries - life expectancy
On Wed, 4 Dec 2019 20:17:48 +0000, Martin Brown
wrote: snip Leaving them flat for a long time or overcharging them will both seriously shorten battery life. As will the charge rate (rather than charge level), something where most people thing bigger / quicker is better. ;-( I specifically buy chargers where the rates are either 'mild' (where the cells don't heat noticeably whilst charging) or are charge current limited / adjustable (and I can ensure the above). When racing RC cars in the very early days, the (Nicad) cells were built into the vehicle and so were raced and re-charged nearly continuously thought the session. When we moved over into removable packs, they were often fan cooled after use and during recharging, to try to minimise damage. I believe in the case of some chemistries, the rate of charge can impact the charge density. A slow charge can form fine crystal structure and therefore a greater energy density but a smaller surface area and so a slightly lower discharge rate. Talking to a wedding photographer a few years ago he used the highest capacity NiCads he could find but would cane them re recharge rate, killing them a short period. However, he accepted this 'cost' as part of his overheads because he often had little time between shoots to get the batteries recharged again. Cheers, T i m |
#18
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Rechargeable batteries - life expectancy
Give us a clue, what kind were they?
Rechargeable Ni Cads do not like being left Nickel metal hydrides can be better, but the really ones did seem to suffer this way as well as they self discharged Rechargeable Alkaline are meant to be only taken down to 70 percent then trickled back up again. The more exotic batteries normally need very careful handling to tread the line between exploding and not wearing out with too many cycles. Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "Scott" wrote in message ... I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? |
#20
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Rechargeable batteries - life expectancy
In message , Custos Custodum
writes On Wed, 4 Dec 2019 18:11:00 +0000, Tim Lamb wrote: In message , Custos Custodum writes On Wed, 4 Dec 2019 17:09:58 +0000, The Natural Philosopher wrote: On 04/12/2019 16:42, David wrote: On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? It depends....... I have an HP PDA not used since about 2005 and the batteries won't hold charge. I have a JVC badged digital camera last used in 2005 with several spare batteries and all seem to hold charge. So it probably depends on the size of the battery, the chemistry and the manufacturer. NiMh and LIPO will in general be destroyed, but Nicad can take it. Your avvin a laff, mate. Even good quality NiCads would grow whiskers if they were left discharged for any length of time. Hum. Connect a charged NiCad in parallel and vaporise the whiskers:-) I'm not sure a single cell would work with anything but newly formed whiskers. I used to charge up a really big capacitor (5-10000 uF) to around 20 volts and zap the whiskers with that. Once started, The whiskers tend to re-form but if the cell is kept charged it will usually auto-zap. Don't know. Regular event with a nice portable Tektronix scope. Bench use, plugged in to supply. Lab rules were that the bench power be turned off at night! By morning one or more cells would fail to take a charge..... -- Tim Lamb |
#21
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Rechargeable batteries - life expectancy
On 04/12/2019 18:17, Ray wrote:
"Jethro_uk" wrote in message ... On Wed, 04 Dec 2019 16:32:01 +0000, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years.Â* I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? Does it matter Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. My eneloops have lasted much longer than that. My Sony NiMH AA batteries, marked "CycleEnergy", bought 2008 are doing fine. They are mostly used in my Caplio GX8 camera that takes 2 AA batteries and have been recharged many times. The Energiser NiMH AA rechargeables that were bought a few years later go flat much more quickly and one made the intelligent charger flag it as a bad cell, so that one has gone. A good quality battery charger that doesn't overcharge is probably a good idea, also, while they might be convenient I suspect that 1 hour chargers shorten then lives of rechargeables. I wouldn't be surprised if they are less environmentally friendly than regular disposable ones. |
#22
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Rechargeable batteries - life expectancy
On Thu, 5 Dec 2019 13:16:10 +0000, Andrew wrote:
Gave up using rechargeables for AA AAA batteries years ago. There's no way they saved any money after buying the charger(s) and having the batteries last for a few months. My eneloops have lasted much longer than that. My Sony NiMH AA batteries, marked "CycleEnergy", bought 2008 are doing fine. They are mostly used in my Caplio GX8 camera that takes 2 AA batteries and have been recharged many times. The Energiser NiMH AA rechargeables that were bought a few years later go flat much more quickly and one made the intelligent charger flag it as a bad cell, so that one has gone. I had the occasional cell that a 'smart' charger didn't like. Still around 1.15V, so not deeply discharged. 5 min. on a 'dumb' charger and it would then charge OK on the 'smart' one. A good quality battery charger that doesn't overcharge is probably a good idea, also, while they might be convenient I suspect that 1 hour chargers shorten then lives of rechargeables. The Nicor defaults to 350mA on an AA; I set it to 150mA and let it have all the time it needs. Thanks to this group, I learnt thas rapid charging is bad. -- Peter. The gods will stay away whilst religions hold sway |
#23
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Rechargeable batteries - life expectancy
On Thu, 05 Dec 2019 09:19:21 +1100, Rod Speed wrote:
wrote in message ... On Wednesday, 4 December 2019 16:32:07 UTC, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? NiCd & NiMH aren't worried by sitting flat. I'd charge them, not fit them then fit them to the mouse a week later, see if they've self discharged or whether they then run 5 minutes. Should narrow down the problem. If they're self discharging quickly you can get a bit more life by zapping them, but not much, they soon short out again. AAs & AAAs are 2 for £1 at poundland anyway. There is also the difference between good and lousy chargers. At one time I discovered that the Panasonic cordless phone would charge what the dedicated charger wouldnt charge properly. We've have four Panasonic mobile phones bought about ten years ago. Recently I had to change the batteries in two of them. I thought that was pretty good. |
#24
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Rechargeable batteries - life expectancy
"pinnerite" wrote in message ... On Thu, 05 Dec 2019 09:19:21 +1100, Rod Speed wrote: wrote in message ... On Wednesday, 4 December 2019 16:32:07 UTC, Scott wrote: I found a few rechargeable batteries that had not been used for at least three years. I charged them all and found they do not seem to be holding their charge (unable to power a cordless mouse for more than five minutes). Is this type of battery destroyed by being left discharged for a long period or could it recover with a few more charges? NiCd & NiMH aren't worried by sitting flat. I'd charge them, not fit them then fit them to the mouse a week later, see if they've self discharged or whether they then run 5 minutes. Should narrow down the problem. If they're self discharging quickly you can get a bit more life by zapping them, but not much, they soon short out again. AAs & AAAs are 2 for £1 at poundland anyway. There is also the difference between good and lousy chargers. At one time I discovered that the Panasonic cordless phone would charge what the dedicated charger wouldnt charge properly. We've have four Panasonic mobile phones bought about ten years ago. Recently I had to change the batteries in two of them. I thought that was pretty good. Yeah, they do the charger very well indeed. |
#25
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UNBELIEVABLE: It's 05:33 am in Australia and the Senile Ozzietard has been out of Bed and TROLLING for OVER FOUR HOURS already!!!! LOL
On Fri, 6 Dec 2019 05:33:53 +1100, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again: FLUSH the trolling senile asshole's latest troll**** unread 05:33??? LOL So, WHEN are you going to sleep, you clinically insane senile idiot? -- dennis@home to retarded senile Rot: "sod off rod you don't have a clue about anything." Message-ID: |
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