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View Full Version : Energizer AA's not holding charge


Spoon
2006.11.08, 03:49 PM
I was just wondering if anyone else is having this problem. I have 8 energizer AA 2500mAh batteries that don't seem to be holding a charge.

If they sit in my radio for a day or two the voltage is down pretty low maybe 10.2V or so. That's without using them at all and when I first intall them they are up in the high 10's.

EDIT: Also, the batteries are pretty new and I tried refreshing/testing them. They all test at about 2.4 -2.5Ah

briankstan
2006.11.08, 04:02 PM
I'm having this same problem with mine. I charged them on my ICE charger and they were only holding about 900 mah. I cycled them a few times and they went back up to close to the 2500 mah rating.

I think it has somthing to do with running them in a low drain device. they batteries are more designed to work in a high drain device. I'm running the same batteries in my digital camera and they don't seem to be doing this like the ones I was running in my controller.

I have switched the ones in my controller to Alkalines, and on my helios they are reading 13.0+ volts when new. The rechargeables were luck to hit 11volts after being charged.

Spoon
2006.11.08, 04:04 PM
That's kind of crappy. I wrote energizer to see if they would warranty them. I'll see what they say. I already have four for my digicam and I don't need 8 more...

Maybe I can sell them and get something else that will work for the helios.

arch2b
2006.11.08, 04:05 PM
has anyone used the optional cell pack for thier helios? i too have short life spans with nimh's in my tx. in one day they go from full to 9.8v

briankstan
2006.11.08, 04:07 PM
don't feel bad. I have 32 of them for my controllers, and 8 for my camera..
16 are energizer, 16 are digital brand. both are doing the same thing when running in the controllers

the alkalines seem to last alot longer in the controller than the rechargeables ever did.

Spoon
2006.11.08, 04:19 PM
The ones that came with my charger are pretty good. I think it's th BC-900 charger but I can't remember the battery name. They are only 2000mAh and they run for a while.

hobbycar
2006.11.08, 04:31 PM
I also have been more and more disappointed on how fast my 2500mAh AA Energizers discharge whether or not I'm using them.

-hobbycar

Draconious
2006.11.08, 04:41 PM
Energizer Cells always work great for the first few uses, then they go crap...

ChiefGreenLeaf
2006.11.08, 05:20 PM
Same thing here. They used to last for awhile, but lately they need to be charged before every use.

Spoon
2006.11.08, 05:35 PM
WOW!

I am glad I asked. I had no idea...

bolter9
2006.11.08, 06:38 PM
This is funny- I've got 2 sets of Energizer AAs for my M11 and they won't hold a charge to the point of being useless (they're less then a year old). I've got another brand (can't remember it at the moment), and they hold a charge just fine in the M11.

I've been wondering why that is...

Draconious
2006.11.08, 06:48 PM
I think the energizers need to be slow charged.. their 15 minute charger (that I have been using on my TX cells only not car!) gets them way too hot... so they are likely better for over night charging... my Energizer AA are the older Blue-Gold labels tho... wich are not as bad as the even older Green-Gold Labels wich totaly suck !!!

I have been using my Rayovac IC3 just fine in my car, with the only problem being their little black end of their label that causes 10-20ohms of resitance so the charger knows they are the right batteries... sometimes does not trigger the switch so im gona mod my charger and solde rin some 10ohm resistors so its always in 15 minute mode...

Spoon
2006.11.09, 11:54 AM
Does anyone have recommendations on AA batteries that have stood the test of time? I would rather use rechargables.

There are a few brands HERE (http://www.nimhbattery.com/aa-nimh-batteries.php) any thoughts?

machine
2006.11.09, 12:00 PM
MY energizers are the same. Good for a day of racing but if they sit my low voltage alarm goes off...

I have a set of 2100 Sanyos and they work perfectly holds the charge will sitting. But the best are the cheap batteries from costco they are alkie's but they last for ever.

Spoon
2006.11.09, 12:09 PM
MY energizers are the same. Good for a day of racing but if they sit my low voltage alarm goes off...

I have a set of 2100 Sanyos and they work perfectly holds the charge will sitting. But the best are the cheap batteries from costco they are alkie's but they last for ever.

Are you using them in a digital radio or the stock TX?

pchan0
2006.11.09, 01:25 PM
Spoon,

GP are perfect for radio transmitter application, all they have is long runtime and no punch. I have a set of GP1800mAh AA that I have used for I think around 3 years, they are still running great, hold their charge well and it can last up to 3 race day. 0.9 or 1.0 amp charge rate with 3mV delta peak is perfect for these cells. Good luck.

bnwhtlw
2006.11.09, 01:34 PM
Does anyone have recommendations on AA batteries that have stood the test of time? I would rather use rechargables.

There are a few brands HERE (http://www.nimhbattery.com/aa-nimh-batteries.php) any thoughts?

Folks on the dpreview.com forum I keep up with swear by those maha's. From what Ive read they have been somewhat of a pioneer with the higher MHA. I know they were one of the (if not THE) first of the first to make 2500mha.

There again Digital Cameras (especially with flash) are higher drain devices. I have not had trouble with my Energizer 2500's

arch2b
2006.11.09, 01:53 PM
let me know if any of you va/dc guys buy any cells, i can tag my 8 or more on maybe.

machine
2006.11.09, 08:48 PM
i'm using a digital TX. KO helios.

EMU
2006.11.10, 12:40 AM
I had an old set of Duracell 2050s that just dont hold their charge at all... I really think that it has more to do with how the cells are charged than what cell they are. These should be slow charged.

The 15 minute chargers are too fast... they are great if you are in a rush, but if you know you are going to go racing, charge the TX cells the night before in a slow charger... The fastest charger I would use would be the Duracell 30 minute charger, for car batteries as well.

I picked up a set of Duracell 2650s for the PNWC 2 weeks ago, charged them once, used them for the entire race weekend and practice... and ran my Mini-T outside for about an hour before breaking the chassis... I still get a 10.3v reading on the LCD.

Spoon
2006.11.10, 08:57 AM
I had an old set of Duracell 2050s that just dont hold their charge at all... I really think that it has more to do with how the cells are charged than what cell they are. These should be slow charged.

The 15 minute chargers are too fast... they are great if you are in a rush, but if you know you are going to go racing, charge the TX cells the night before in a slow charger... The fastest charger I would use would be the Duracell 30 minute charger, for car batteries as well.

I picked up a set of Duracell 2650s for the PNWC 2 weeks ago, charged them once, used them for the entire race weekend and practice... and ran my Mini-T outside for about an hour before breaking the chassis... I still get a 10.3v reading on the LCD.

I usually charge my AA's at 1000mA which shold take about 2 hours...I am going to try charging them at a lower rate.

I would be interested to see how those Duracell's hold up over the long run. My Energizer's were great at first.

Draconious
2006.11.10, 10:15 AM
I still like my 15 minute rayovacs... they dont get hot... I just have to cycle them a few time, charge/drain them in car for practice laps.. before they wake up fully.

arch2b
2006.11.10, 10:27 AM
i think the problem has been clarified. it seems to be the charge rate vs. the low drain application of the tx. most of these cells are marketed for high drain use/applications however we are using them in something that tends to just sit around unused for the most part.

are there specific cells for low drain devices/applications that would be best suited for making a cell pack for tx's like the helios?

Spoon
2006.11.10, 10:59 AM
Well, I got some resolution from Energizer. They are going to send me coupons (for new batteries I assume) but that doesn't really solve my problem...

I think Arch hit the nail on the head and has the pertinent question. Someone mentioned the GP's but they are like 3.75 each. cheapbatterypacks.com (http://www.cheapbatterypacks.com/main.asp?sid=646945&pgid=loosecells) has some loose AA cells that they claim are good for TX's but they are out of stock right now. I already requested an email when they return to stock so I can post an update here...