That’s why some AGM batteries are mounted inside the passenger compartment or truck of a vehicle to keep them away from the heat in the engine compartment.ĪGM batteries are used in m any late-model hybrid vehicles that have idle stop-start systems because they handle these kinds of loads better than wet cell lead-acid batteries. However, they may be damaged by exposure to excessive heat. Evaporation and spillage are usually no problem with most AGM batteries - provided they are not overcharged. AGM batteries have no liquid electrolyte inside because the electrolyte is in a paste between the plates. In more moderate climates, average battery life is four to five years, or up to six or seven years for an AGM (Absorbed Glass Mat) battery. Not only can this damage the battery but it also risks shorting out the positive battery post and cable against any nearby metal surface.Īverage battery life in hot climates (like Arizona, New Mexico, Nevada, etc.) for a typical wet cell lead-acid battery can be as short as three years - even the ones with long warranties due to excessive evaporation of the water inside the battery.
Also, if the battery holddown clamp is loose or missing, the battery can flop around like a fish out of water on a rough road. Driving on extremely rough roads for long periods of time can literally shake a battery to death.
#Short in auto battery bumpy road crack
The plates and connections inside a wet cell lead-acid battery also are fairly brittle and can easily crack if the battery is subjected to too much jostling and vibration.
Unlike deep cycle marine or RV batteries that can handle deep discharges and prolonged periods of being undercharged, most car batteries will die a premature death if they are run down too often or left in a state of low charge for a long period of time.
#Short in auto battery bumpy road full
Undercharging can shorten a battery’s life by allowing the plates to be come permanently sulfated.Īutomotive lead-acid batteries last longest when they are maintained at or near full charge. Overcharging can kill a battery very quickly by boiling electrolyte out of the cells, and by overheating and warping the cell plates. These include overcharging, undercharging and excessive vibration.
Other factors can cause batteries to fail anytime of year.
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