Battery failure can happen for a variety of reasons.
Listed below are a few examples:
The further a battery is discharged, the longer it will take to recharge. Usually, it takes several hours to effectively recharge a battery.
If a battery is almost completely discharged, it can take up to 12 hours or more to recharge. If the battery becomes hot to the touch while recharging, then immediately stop charging. Follow these steps when recharging a battery.