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5. A battery will not explode.
6. Batteries last longer in hot climates than in cold ones.
7. Pulse chargers, aspirins or additives will revive sulfated batteries.
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Recharging a wet lead-acid battery normally produces hydrogen and
oxygen gasses. While spark retarding vent caps help prevent battery
explosions, they do occur when jumping, connecting or disconnecting
charger or battery cables, and starting the engine. While not fatal,
battery explosions cause thousands of eye and burn injuries each year.
When battery explosions occur when starting an engine, here is the
usual sequence of events:
o One or more cells had a high concentration of hydrogen gas
(above 4.1%) because the vent cap was clogged or a defective
valve did not release the gas.
o The electrolyte levels fell below the top of the plates due to high
under hood temperatures, overcharging, or poor maintenance.
o A low resistive bridge or treeing formed between the top of the
plates such that when the current started to flow, it caused an arc
or spark in one of the cells.
That combination of events ignites the gas, blows the battery case cover
off and spatters electrolyte all over the engine compartment. The largest
number of battery explosions while starting an engine occurs in hot
climates.
When an explosion happens, thoroughly rinse the engine compartment
with water, and then wash it with a solution of one-pound baking soda to
one gallon of warm water to neutralize the residual battery acid. Then
thoroughly rewash the engine compartment with water.
Working on well ventilated areas or using Valve Regulated Lead Acid
(AGM or gel cell) type batteries can significantly reduce the possibility of
battery explosions.
Not really, in hot climates batteries only last approximately two thirds as
long compared to cold ones. Heat kills batteries, especially sealed wet
lead acid batteries.
Using pulse chargers or additives is a very controversial subject. Most
battery experts agree that there is no conclusive proof that more
expensive pulse charges work any better than constant voltage chargers
to remove sulfation. They also agree that there is no evidence that
additives or even aspirins provide any long-term benefits.
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