Replacement battery wont take a charge

[brettreading]

Hi

I bought a replacement battery for my 60gb Zen M (running 1.21.2 firmware) and it just won't charge. The player works when connected to the charger but after hours of charging it still says low battery and switches off.

I downgraded my firmware to 1.11.04 as I read on Amazon that newer firmwares didnt support replacement batteries but it still wont charge.

Any thoughts?

Thanks
Brett

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