I have a couple of rechargeable AA NiMH batteries that I can no longer charge. After the charger claims the batteries have been charged fully they still output 0 Volt.
I found some posts that claim that batteries like this can be fixed by
- placing them in a freezer in a sealed plastic bag for 16-24 hours
- letting them warm up to room temperature
- Charging and discharging them a couple of times
Is this safe? Could this restore the batteries to "decent" working condition?
The question is meant to be generally useful but my specific batteries have the following specs: AA/HR6/DC1500 NiMH/1,2V/2300mAh.