How Long Does A 12v Car Battery Last. Average 12V car batteries typically last three to five years and manufacturers recommend always replacing car batteries once those five years are up. Due to the discharge maximum of 80 only 480 watt-hours are available for use.
Full discharges - a small number of. How long does a 12V battery hold charge. 7 hours is 27 of 2576 hours.
Factors That Affect Battery Life.
According to Duracell the standard CopperTop AA cell has a capacity of between 2000 and 3000 mAH depending on how it is used and how end of life is determined. If the battery is 100AH a simple calculation will show that it will last for approximately 14 hours 7 minutes. Once the battery is charged remove the charger connector from the battery socket. If the battery is new it should hold a charge for a month or two.
