20 Most Recent Duracell NiMH AA/AAA Battery Charger with 4 Rechargeable AA Batteries Questions & Answers

I had the same problem with flashing red lights. Both sides on a four battery charger. I swapped the batteries to another charger and the batteries were fine. They charged normally. I put some different batteries in the charger and the same flashing light situation. Those batteries also charged normally in a different charger. I looked closely at the back of the charger and, low and behold, "made in China". Why does that not surprise me. The bottom line, it may not be a battery issue.

Charging Normal Batteries runs the risk of explosion...

your lucky then,,, they take 16 hourse to fully charge unless you rapid charge them? a nasty thing to do to a new battery? all ways slow charge them first,,
never fast charge any battery only charge at whats called "the C10 rate!" they live much longer that way,
in other words slow charge when first charge,,,faster after that! ok,, did you not know you must "form the cells first" before you use them?

NiMH tends to have a "memory". What this means is that the batteries will get used to being only charged and discharged a certain amount. What could be happening is that the battery THINKS it is charged when it is not... or.. it THINKS it is discharged when it is not. You can try to recondition them:

1. Charge them
2. reset the charger and charge again
3. put them in your device and drain them
4. let them sit, drain them again
5. recharge them
6. drain them again

Do this a few times. If you don't notice an improvement, you may want to consider getting a new set of batteries - I would recommend lithium rechargeables.

When the batteries are charged fully the light should be green.

https://batteryclerk.com/products/duracell-powerpack-500-12v-12ah-ups-battery?variant=6848968884283&gclid=Cj0KCQjwyPbzBRDsARIsAFh15JaoCCn-CM-mUQO80HQ_4oRHOKh0VZC0iq7F0KE1_YDN0XHegOUt4CsaAgaNEALw_wcB

It's not a good idea to run anything that needs a lot of wattage through a power converter using a 12v cigarette lighter plug. Coffee makers work by using a resistant heater element and it might work, but you could damage the coffee maker or the adapter by doing so.

Hi,

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