Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default NiMH charger recommendations?

First of all, this is a request for a *recommendation*, not a request for
someone to do Google searches for me.
- - -
I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA
at a time is OK.

I see very few that support all these batteries (Maha makes a
separate charger for 9v). Of those that do, not all use delta-V
termination (or don't specify).

Of those remaining that qualify, I've not heard of the manufacturers
("Powerlzer"? -- that's not a misspelling), or Chinese no-name ones:

http://www.horizonbattery.com/batter...ype/12-bay-aa-
aaa-9v-battery-charger.html

The Tenergy TN190 is the only one I've seen:

http://www.all-
battery.com/Tenergy_TN190_NiMH_NiCd_Advanced_Universal_Charger _with_LCD_Displa
y-01190.aspx

Does anybody know of such combo chargers? Can recommend one?

Thanks,
Dave


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Default NiMH charger recommendations?

I've been using a couple of Powerizer universal chargers and these work well
with packs.
These are the type for high capacity (C or D) battery packs of 4.8 to 10.8V
(1A/1.8A rates), not the multi-cell chargers with individual cell slots.

When I charge individual AA cells, I put them in a 4-cell holder and use one
of my universal MRC chargers.

I don't use rechargeable 9Vs so I don't need that feature. My gear that uses
9Vs gets used so little that alkalines are a better choice.. always have a
charge for about 2 years unless they need replaced.. same for AAA cells (LED
flashlights, mostly).

--
Cheers,
WB
..............


"DaveC" wrote in message
...
First of all, this is a request for a *recommendation*, not a request for
someone to do Google searches for me.
- - -
I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA
at a time is OK.

I see very few that support all these batteries (Maha makes a
separate charger for 9v). Of those that do, not all use delta-V
termination (or don't specify).

Of those remaining that qualify, I've not heard of the manufacturers
("Powerlzer"? -- that's not a misspelling), or Chinese no-name ones:

http://www.horizonbattery.com/batter...ype/12-bay-aa-
aaa-9v-battery-charger.html

The Tenergy TN190 is the only one I've seen:

http://www.all-
battery.com/Tenergy_TN190_NiMH_NiCd_Advanced_Universal_Charger _with_LCD_Displa
y-01190.aspx

Does anybody know of such combo chargers? Can recommend one?

Thanks,
Dave



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Default NiMH charger recommendations?


I can recommend the Lenmar Mach1 Speedcharger for the AA/AAA part of
your need - bought mine in 2007 and have been quite happy with it for
4-1/2 years and several dive trips feeding camera and flash lots of AA
batteries.

But, of course, it does not do 9V. Requiring that one box do it all may
be excessively limiting your choices...

--
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Please don't feed the trolls. Killfile and ignore them so they will go away.
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Default NiMH charger recommendations?

I own an Energizer CHM4FC, which you can get for around $25. It handles AAA,
AA, C, D, and 9V. There's a NiCd / NiMH switch for cell type. I use it for
5400mAh C cells, and it works fine.

http://data.energizer.com/PDFs/chm4fc.pdf

The catch is... The maximum charge current is ~ 500mA, and you have no
control over what the charger does.

Get a MAHA PowerEx MH-C9000. It does only AA and AAA cells, * but you won't
regret it. You can pick the charge rate, and there are functions (such as
refresh and capacity) not on simple chargers. You can see exactly what's
going on.

http://www.thomasdistributing.com/Ma...rbr_p_134.html

The current $52 price seems high (I have two, purchased at around $40 each),
but Thomas occasionally has sales.


* MAHA told me it has no intention of making a C adapter. Rats.


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Default NiMH charger recommendations?

On Tue, 3 Apr 2012 23:12:53 -0700, DaveC wrote:

First of all, this is a request for a *recommendation*, not a request for
someone to do Google searches for me.
- - -
I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA
at a time is OK.


I like the La Crosse chargers. Got one at home, one at the office. Cells
are charged individually, selectable rates, falls back to trickle charge
when full, reports time/volts/rate/amp-hours. Refresh cycle (discharge,
charge, repeat until stable).

http://www.lacrossetechnology.com/bc1000/index.php

--
Rich Webb Norfolk, VA


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Default NiMH charger recommendations?

On Wed, 04 Apr 2012 16:12:53 +1000, DaveC wrote:

First of all, this is a request for a *recommendation*, not a request for
someone to do Google searches for me.
- - -
I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA
at a time is OK.

I see very few that support all these batteries (Maha makes a
separate charger for 9v). Of those that do, not all use delta-V
termination (or don't specify).

Of those remaining that qualify, I've not heard of the manufacturers
("Powerlzer"? -- that's not a misspelling), or Chinese no-name ones:

http://www.horizonbattery.com/batter...ype/12-bay-aa-
aaa-9v-battery-charger.html

The Tenergy TN190 is the only one I've seen:

http://www.all-
battery.com/Tenergy_TN190_NiMH_NiCd_Advanced_Universal_Charger _with_LCD_Displa
y-01190.aspx

Does anybody know of such combo chargers? Can recommend one?

Thanks,
Dave



I have this one. Used for a couple of years and it is great. SoShine make
good stuff - the only problem is the crappy name. Only AA and AAA though.

http://www.dealextreme.com/p/soshine...k-charger-6152

for another poster:

http://www.dealextreme.com/p/soshine...s-5-pack-13814

AA is a little bit longer than C so it can be a tight fit.

--
We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

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Default NiMH charger recommendations?

DaveC wrote:

First of all, this is a request for a *recommendation*, not a request for
someone to do Google searches for me.
- - -
I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA
at a time is OK.

I see very few that support all these batteries (Maha makes a
separate charger for 9v). Of those that do, not all use delta-V
termination (or don't specify).

Of those remaining that qualify, I've not heard of the manufacturers
("Powerlzer"? -- that's not a misspelling), or Chinese no-name ones:

http://www.horizonbattery.com/batter...ype/12-bay-aa-
aaa-9v-battery-charger.html

The Tenergy TN190 is the only one I've seen:

http://www.all-
battery.com/Tenergy_TN190_NiMH_NiCd_Advanced_Universal_Charger _with_LCD_Displa
y-01190.aspx

Does anybody know of such combo chargers? Can recommend one?

Thanks,
Dave


....

I have an older version of the one you linked, without
the fast/smart capabilities. I've had it for three years;
it's been flawless. And the high-capacity Tenergy
D-cells (10,000 mAH) I use are also excellent.

Lord Valve


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Default NiMH charger recommendations?

http://www.all-
battery.com/Tenergy_TN190_NiMH_NiCd_Advanced_Universal_Charger _with_LCD_Displa
y-01190.aspx

I have an older version of the one you linked, without
the fast/smart capabilities. I've had it for three years;
it's been flawless. And the high-capacity Tenergy
D-cells (10,000 mAH) I use are also excellent.

Lord Valve


It turns out that the Tenergy charger uses delta-V termination on all except
the 9v battery. Also, has condition function (discharge before charge) on all
except 9v.

Blast!

Dave

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Default NiMH charger recommendations?

It turns out that the Tenergy charger uses delta-V termination
on all except the 9V battery.


As a 9V battery uses six cells, it might be difficult to determine an
appropriate dV for the battery as a whole, given that the dV could be only
1/6 of that for a single cell.


Also, it has a condition function (discharge before charge)
on all except 9V.


If you tend to thoroughly run down the cells before recharge, that shouldn't
be a problem.


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Default NiMH charger recommendations?

It turns out that the Tenergy charger uses delta-V termination
on all except the 9V battery.


As a 9V battery uses six cells, it might be difficult to determine an
appropriate dV for the battery as a whole, given that the dV could be only
1/6 of that for a single cell.


Ah, good point. Series cells difficulty.

Also, it has a condition function (discharge before charge)
on all except 9V.


If you tend to thoroughly run down the cells before recharge, that shouldn't
be a problem.


Good to know.

Thanks!



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Default NiMH charger recommendations?

On 04/04/2012 16:59, DaveC wrote:
http://www.all-
battery.com/Tenergy_TN190_NiMH_NiCd_Advanced_Universal_Charger _with_LCD_Displa
y-01190.aspx

I have an older version of the one you linked, without
the fast/smart capabilities. I've had it for three years;
it's been flawless. And the high-capacity Tenergy
D-cells (10,000 mAH) I use are also excellent.

Lord Valve


It turns out that the Tenergy charger uses delta-V termination on all except
the 9v battery. Also, has condition function (discharge before charge) on all
except 9v.

Blast!

Dave


Suspect delta-V sensing would never work on a 9v battery as it is seven
cells in series which would reach charged state at different times.
Best strategy is to charge at a low rate for the maximum time to ensure
all cells are catered for.

Also, if you get an 'intelligent' charger for single cells, they are
often a bit too clever and fail to recognise the presence of a cell that
has been over discharged or reverse charged (can easily happen in multi
cell packs). A quick blast (~1A for a few seconds) gives it enough of a
start for the charger to see it. Either keep a 'dumb' charger or
connect across an alakaline cell for a few seconds.

I've used this one for a number of years

http://www.batterylogic.co.uk/techno...line-BL700.asp

Flexible if a little slow. I've found the very fast chargers prone to
killing the batteries after a few cycles.

Chris K
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Default NiMH charger recommendations?

http://www.batterylogic.co.uk/techno...line-BL700.asp

Flexible if a little slow. I've found the very fast chargers prone to
killing the batteries after a few cycles.

Chris K


That's the same charger that La Crosse puts its name on:


http://www.amazon.com/La-Crosse-Technology-BC-9009-AlphaPower/dp/B00077AA5Q

With such a wide range of good AA/AAA chargers and a dearth of AA/AAA/9V
chargers, I might get a dedicated 9V charger just to take care of those...

Thanks,
Dave

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Default NiMH charger recommendations?

Harbor Freight NiCd/NiMH charger does all 1.5v and 9v batteries.
Check it out. item#47618
I have one and use it.
On sale for $14.99 + tax and shipping or go into local store.
http://www.harborfreight.com/battery...ger-47618.html
€¢Recharges batteries singly or in a group
€¢Built-in IC timer control
€¢LED lights indicate charge status
€¢Automatic charging current selection for different size batteries
€¢Plugs into standard 110V outlet

Charging Times: NiCd D/C/AA/AAA: 5 hours by timer control
NiMH D/C/AA/AAA: 8 hours by timer control
NiCd/NiMH 9V: 10-15 hours manually
Shipping Weight: 2.25 lbs.



--- Posted via news://freenews.netfront.net/ - Complaints to ---
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Default NiMH charger recommendations?

William Sommerwerck wrote:
I own an Energizer CHM4FC, which you can get for around $25. It handles AAA,
AA, C, D, and 9V. There's a NiCd / NiMH switch for cell type. I use it for
5400mAh C cells, and it works fine.

http://data.energizer.com/PDFs/chm4fc.pdf

The catch is... The maximum charge current is ~ 500mA, and you have no
control over what the charger does.

Get a MAHA PowerEx MH-C9000. It does only AA and AAA cells, * but you won't
regret it. You can pick the charge rate, and there are functions (such as
refresh and capacity) not on simple chargers. You can see exactly what's
going on.

http://www.thomasdistributing.com/Ma...rbr_p_134.html

The current $52 price seems high (I have two, purchased at around $40 each),
but Thomas occasionally has sales.


* MAHA told me it has no intention of making a C adapter. Rats.


I have that MAHA charger and it can't correctly discharge Sanyo Eneloops
(I think they have a little higher impedance than other cells) and the
charger uses some horrible high current pulse mode.

Then on charge one day it put 3.6Ah into one of my 2Ah cells. I don't
use it anymore.

Then again, I have had troubles with the Lacrosse BC-900 type chargers
too. Only they just break after a while, but work Ok in general.

There are also hobby chargers. I have a Thunderpower at work for some
LiPo cells.



--
_____________________
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SuSE 10.3 Linux 2.6.22.17
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Default NiMH charger recommendations?

http://www.harborfreight.com/battery...ger-47618.html

No delta-V for end-of-charge detection.

Might be OK for charging 9V or conditioning a bum cell...

Dave



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Default NiMH charger recommendations?

On 2012-04-04, Chris K wrote:

Also, if you get an 'intelligent' charger for single cells, they are
often a bit too clever and fail to recognise the presence of a cell that
has been over discharged or reverse charged (can easily happen in multi
cell packs). A quick blast (~1A for a few seconds) gives it enough of a
start for the charger to see it. Either keep a 'dumb' charger or
connect across an alakaline cell for a few seconds.


Aha!

My favourite home battery charger is the one I bought in Tesco in
Korea a few years ago: you can charge any number (up to 4) of AA or
AAA batteries, mixed in any order, independently, and it has a
sensible set of light meanings:

* no light: no battery in this slot
* red: charging
* green: charged
* blinking red: battery doesn't work

and I've been getting quite a few of the last one recently. I guess I
should get those NiMH batteries back out of the bin and try them in a
"less sophisticated" charger to see if they work again after that?


I've used this one for a number of years

http://www.batterylogic.co.uk/techno...line-BL700.asp


I certainly like that one. All the numbers & options have a lot of
geeky appeal. ;-)


Flexible if a little slow. I've found the very fast chargers prone to
killing the batteries after a few cycles.


(The one I mentioned above is fairly fast.)


--
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Default NiMH charger recommendations?

On Thu, 05 Apr 2012 11:07:06 +1000, Mr.CRC
wrote:

William Sommerwerck wrote:
I own an Energizer CHM4FC, which you can get for around $25. It handles
AAA,
AA, C, D, and 9V. There's a NiCd / NiMH switch for cell type. I use it
for
5400mAh C cells, and it works fine.

http://data.energizer.com/PDFs/chm4fc.pdf

The catch is... The maximum charge current is ~ 500mA, and you have no
control over what the charger does.

Get a MAHA PowerEx MH-C9000. It does only AA and AAA cells, * but you
won't
regret it. You can pick the charge rate, and there are functions (such
as
refresh and capacity) not on simple chargers. You can see exactly what's
going on.

http://www.thomasdistributing.com/Ma...rbr_p_134.html

The current $52 price seems high (I have two, purchased at around $40
each),
but Thomas occasionally has sales.


* MAHA told me it has no intention of making a C adapter. Rats.


I have that MAHA charger and it can't correctly discharge Sanyo Eneloops
(I think they have a little higher impedance than other cells) and the
charger uses some horrible high current pulse mode.

Then on charge one day it put 3.6Ah into one of my 2Ah cells. I don't
use it anymore.


I've had trouble too with low discharge cells. My charger has two charge
rates at the low rate it may not pick up the drop in cell voltage when
fully charged but they work OK at the higher charge rate




Then again, I have had troubles with the Lacrosse BC-900 type chargers
too. Only they just break after a while, but work Ok in general.

There are also hobby chargers. I have a Thunderpower at work for some
LiPo cells.





--
We have failed to address the fundamental truth that endless growth is
impossible in a finite world.

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