Is my battery bad?

If any of the following are true. Do not attempt to charge or use the battery - instead Dispose of LiPo Battery Responsibly

Your battery is bad if:

• The battery is swollen
• The battery won't charge
• The battery won't hold a charge
• The voltage has ever dropped below the minimum voltage for your particular battery - even once
• The charger I have shows all zeros (000) 
• The charger I have shows one or more red lights after charging for an hour.
• The battery worked great the first time - then more than 3 days later, it won't even charge or hold a charge or power the drive
• The battery is new and has never been used but I have had it longer than 3 months or longer
• The battery was charged to full but never used - longer than 3 days
• The battery was only used a little at first and then stored for longer than 3 months
• The battery was used and was NOT recharged - and then sat unused for longer than 3 days
• The battery was used and WAS recharged to maximum capacity - and then sat unused for longer than 3 days
• The battery was dropped pretty hard and is misshaped
• The battery has physical damage
• The battery is around a year old and only lasts a few seconds or minutes.
• The battery is around a year old and any of the above or below are true. 
• If you have removed the "wrapper"

For the following - the battery might just need charging - try recharge the battery. See the appropriate article for your specific battery Charging Home Original 11.1v battery or Charging, Use, and Storage of the Plus Battery or follow the associated links.

Your battery MAY be bad if:

• Performance has declined
• The drive won't turn on
• The drive won't run or only runs a few seconds or so
• The drive sounds "low voltage" beep code: Two declining-in-tone beeps
• The charger I have shows one or more red lights after charging for an hour
• This could be a bad charger - see: Is my charger bad?
• The battery was in the car or garage, or somewhere else that gets really hot or really cold
• Do not attempt to charge or use too hot or too cold - wait for the internal temperature to return to normal. See: Operating Temperatures Hot and Cold

If your battery is bad or has physical damage -  do not charge or use it - But Dispose of LiPo Battery Responsibly