What's wrong with my battery

[rafine1234]

I recently put in a 2300mah extended slim battery by andida The problems is the battery kinda charges slow and when the battery is fully charged in urn off the phone and it drops to 80 percent. Does any body know what's wrong or what's going on

Sent from my SAMSUNG-SGH-I747 using Android Central Forums

 

[brkaras]

Should have just bought a spare made by Samsung. Aftermarket batteries aren't necessarily made for that phone and could cause issues. If you have the option to take it back I would. Sorry man

Milly