Lanz Bullshit Forum » Charger problem with Fierce cell phone

Hello,

I bought a used Alcatel Fierce cell phone. the charger looks not to belong to it. It Charged to 37% over night. I used my Presto cell phone charger over night, and it charged the Fierce to %55.
Fierce phone is rated 1800mah, the presto phoone is rated 1200mah. The first charger is probably 900mah. What gives? How do I know if the phone battery is bad? or How do I know what is the max mah rate for these chargers?

Any help will be apprecited.

I didn't find the right solution from the Internet.

References:
https://arstechnica.com/civis/viewtopic.php?p=26175153
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Thank you.