Dead cell in the battery or something is on pulling power from the battery. Light or relay.
how Can you charge multiple 12 volt batteries with a car?
yes
they are continually recharge by an alternator on the car engine.
Batteries lose charge in cold temperatures because the chemical reactions that generate electricity inside the battery slow down in the cold, reducing the battery's ability to deliver power.
charge batteries with caps in place.most U.S.A batteries are made with flame.
Yes, batteries can lose charge in cold temperatures because the chemical reactions that generate electricity inside the battery slow down in colder conditions, reducing the battery's overall capacity and performance.
No they lose some of its power over time. it depends on the type of the battery. rechargeable lose more of there charge that normal battery's.
The batteries are probably bad.
Depends on the quality of the batteries and the care that you charge them with.
Batteries do not waste energy when not being used; however, they may slowly lose their charge over time due to self-discharge. It is recommended to store batteries in a cool place with partial charge to maximize their lifespan.
small battery can lose charge fast,and big batteries can loose charge at large time
Take it to a place that check and charge batteries like the auto zone or kragens.