The brand-new (or rather a factory-new) battery will not charge.

[dugby]

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On 11/19/2022 at 4:50 AM, lawman said:

Try putting the battery in the freezer for a few hours. Remove and let it get to room temperature and then try to charge again in the Leica charger. This may restore the chemical balance in the battery - it's worked several times for me - good luck 🙂

 

Whilst staying at Emerald Lake in British Columbia, I accidentally left an old iPhone 5S in the car overnight ( 0C) which had a battery that only held 15 mins of life after a full charge.

The next morning the iPhone was as cold as a block of ice and took a few hours to thaw. To my surprise that battery was regenerated and now holds it’s charge for 20 hours.

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[Alberti]

Another tip: have in the charger for say half an hour; then take it out for some time like anhour; and repeat like that. It might help. [This way I recovered modern rechargables fo Apple periferals]. This way every time a small charge is added until a normal threshold is reached again.