tarwheel 

I've got some Duracell 2650 NiMH rechargeable batteries that I've had a while, and they've been good batteries. However, lately when I put them in my battery charger, the red indicator light blinks off and on when I try to charge the Duracells. The charger light doesn't blink when I charge other batteries. The light is supposed to glow red while charging and then turn green when it's completed.

Are my Duracell batteries shot? The red light never quits blinking on my charger, and I'm not certain that it's even charging these batteries when I put them in it.

dscheidt

Well, if you've been charging them in a dumb charger, which it sure sounds like, they could be. On the other hand, who knows? They could just be discharged below the level your charger will charge them. Or one of them could be bad, and it won't charge the other because it's a dumb charger.

colleen c

When was the last time you charge those Duracell batteries? If it's been a while, then they may have discharged to much and are damage where the charger will not charge them.

If it was charged ok recently but their performance was on the short side, then they probably was going bad.

tarwheel 

I've been using the batteries regularly and generally don't let them go completely dead. I have 4 of them, and first noticed the charging problem with 2 of the batteries. However, when I tried to charge them again today, I got the flashing light on my charger with all 4 batteries -- either trying to charge them all together or just 2 at a time. I also tried charging them in another charger and the same thing happened, with the charge indicator light flashing on and off.

davidad

The charger may be telling you the batteries are shot. Both of my chargers will not charge a defective battery.

Cyclist0383

I also have a Duracell 2650 that won't charge. It happens sometimes to high capacity batteries. All my 2500s are rock solid, no matter how my wife abuses them......

socalrider

I have had very good luck w/ duracell 2650's.. what charger are you using, the stock duracell charger is not that great, they are mostly timer based..

I've used this La Crosse charger which works great and does help revive some older cells.. This works w/ aaa or aa cells only.. They do make a bigger one that supports, c - d and 9 volt cells too..

https://www.amazon.com/Crosse-Technol...7911152&sr=8-2

Cyclist0383

I use a MAHA C-9000 on mine. A break-in just showed the capacity as zero.