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To: brianl703

Yes, I have two car chargers that behave exactly that way.

Some chargers of rechargeable AAA-D NiMh batts, and of 18650’s (etc.) also need a decent bit of voltage on the battery for the charger to work.

So, sometimes I have to give a low battery a bit of a charge from a dumb charger or from another battery with a 10 ohm resistor in series, THEN put the run down battery in the smart charger. Often but not always, the “too depleted” battery can be recovered.

(I try to avoid running rechargeables “way down”, because it is quite hard on them, but, that’s sometimes hard to avoid...)


24 posted on 05/10/2023 7:19:00 PM PDT by Paul R. (You know your pullets are dumb if they don't recognize a half Whopper as food!)
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To: Paul R.

They could put a button or setting on these “smart” car battery chargers that you could push to allow them to start charging a completely dead battery so we don’t have to resort to things like using a dumb charger or temporarily connecting a good battery in parallel or using a power supply.


29 posted on 05/11/2023 5:43:04 AM PDT by brianl703
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