12V AA/AAA battery chargers

Submitted: Wednesday, Jun 16, 2010 at 15:20
ThreadID: 79405 Views:6934 Replies:7 FollowUps:2
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Just wondering if anyone would have any recommendations for 12V AA/AAA battery chargers?? I've had a number stop working now, and it is becoming not only frustrating but expensive! Also if anyone has had similar problems and found it is 'hardware' on the vehicle end and not related to brand or anything, any tips would be appreciated!

Thanks in advance!
- alwaysrovin
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Reply By: Member - Andrew (QLD) - Wednesday, Jun 16, 2010 at 15:35

Wednesday, Jun 16, 2010 at 15:35
Been using an Eneloop 8 cell charger for sometime now with no problems. It has 240V and 12V input leads and will charge individual batteries rather than in pairs. Has the ability to discharge batteries if required.

AnswerID: 421065

Reply By: Ozhumvee - Wednesday, Jun 16, 2010 at 17:01

Wednesday, Jun 16, 2010 at 17:01
I've had a Digitor model GPPB01 that charges individual batteries, both AA & AAA for probably 7 or 8 years now, comes with both 12v and 240v leads.
1996 Oka Motorhome

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AnswerID: 421072

Reply By: Gazal Champion - Wednesday, Jun 16, 2010 at 17:57

Wednesday, Jun 16, 2010 at 17:57
Hi Alwaysrovin,
I use a REZAP Battery Doctor which charges AA – AAA - 9V D cells and C cells.
It says it will charge RAM ?, Titanium, Ni Mh and Ni Cd.
The blurb says it will also recharge Alkaline,
It says on the packaging “Gives new life to normal throw away batteries.”

It works well and I always take it with me on holidays to keep every thing well charged
I have done some research on the net and they are still available and are selling on ebay for around $29 Buy Now.

Regards, Bruce.
At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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AnswerID: 421084

Follow Up By: deserter - Thursday, Jun 17, 2010 at 13:50

Thursday, Jun 17, 2010 at 13:50
I have had my Rezap for about 15 years and its saved me heaps in batterys. Its greatest assett is that you don't need to use rechargable batteries. The Rezap will recharge any alkaline battery.
FollowupID: 691478

Reply By: vk1dx - Thursday, Jun 17, 2010 at 14:10

Thursday, Jun 17, 2010 at 14:10
WE got one of these eons ago. No hassles. Run it off a 800W inverter. No idea if its full sine wave or not. But no battery failures due to charging problems. Don't even know who makes it. I think we got it from either Dick Smith (before wollies screwed their service) or Jaycar.

Battery chanrger

Here's one on ebay

Hope this helps.

AnswerID: 421189

Reply By: Member - Andrew (QLD) - Thursday, Jun 17, 2010 at 18:32

Thursday, Jun 17, 2010 at 18:32
Just a friendly reminder that the OP is asking about 12V chargers for AA/AAA batteries, not 240V. It would be good to see information related to the original topics :)

Now for someone to help with the rest of their query ;)

AnswerID: 421224

Follow Up By: vk1dx - Friday, Jun 18, 2010 at 14:52

Friday, Jun 18, 2010 at 14:52
Thats why I mentioned we run ours of a 12V DC to 240V AC inverter. The inverter also power the other miscellaneous chargers that abound these days. Phones, radio, shavers (ladies of course etc etc)

FollowupID: 691642

Reply By: Robin Miller - Friday, Jun 18, 2010 at 13:16

Friday, Jun 18, 2010 at 13:16
Use a different approach here Always Rovin, if you don't mind a little playing and making things.

Basically just put 12v across all those batteries thru a resistor for a few hours is all you need to do for a quick freshen up.

We do this with everything from camera/batteries to regular D/C/AA/AAA etc cells of any type.

While far from optimum for any given situation - it usually solves most problems as someone always forget to bring X Y Z charger etc , and means one has to carry a lot less batteries on a trip.

Generic version is have a lighter plug with a lead an solder a 82 ohm 10 watt resistor is series with positive and connect it across batteries.

This is made easier because you can buy battery holders of various sizes and types cheaply and so you just need one lead and plug into different holders.

Max $5 worth of parts.

If you want to get cute, a good addition is to get 3 1amp diodes and solder them in series with the resistor, then you get a little red LED and solder it across the 3 diodes - this acts as a charge indicator.
Many variations on above - so won't go into details.

The catch with this is that you have to remember to not charge batteries for more than several hours , our approach is to charge any batteries as we start driving and take out at end of day.

Robin Miller

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Reply By: alwaysrovin - Friday, Jun 18, 2010 at 18:57

Friday, Jun 18, 2010 at 18:57
Thanks a lot everyone for the replies, and suggestions! Certainly very helpful! I've gone through most of the generic battery brand chargers - ie Duracell, etc, but I've got a few more options to try now!

Thanks again!
- alwaysrovin
AnswerID: 421344

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