When to replace the batteryUpdated a year ago
The capacity of your rechargeable LiPo Battery will gradually decrease. It will need to be replaced when it reaches 80% (13.44v) capacity. Charge cycles is only one factor that determines when it's time to replace the battery. How you charge, use, and store the battery plays a significantly larger part in the battery's overall life expectancy.
The 4 cell Home Plus battery
The battery should be replaced if it has been damaged, punctured, or begins to swell or becomes misshaped, keep it inside a fire resistant container and dispose of it immediately.
Note: dropping the battery may cause internal damage, if it swells, keep it inside a fire resistant container and dispose of it immediately.
If you notice a decline in performance, if the battery will not hold or take a charge, it's time to replace the battery.
If your battery fails to charge or hold a charge - the battery needs to be replaced.
CAUTION: The battery should always be allowed to come to room-temperature before charging. Charging a hot or cold battery might delay charging or damage the battery. For best results, charge the battery at temperatures between 50º and 80ºF (10º-30ºC).