if the battery is hot it is completely US and could explode if conditions are right.its shorting out inside.that is where the smell is coming from.like a bad egg smell.
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--------------1 ) the word i was looking for is sulphation.under normal discharging,fine crystals of lead sulphate are formed on the plates and,by recharging,these are convertible.if the battery is left discharged for long period,however,these crystals turn into coarse lead sulphate crystals which are not easily converted back to the fine state and may ruin the battery..
2 ) the effects of suphation are (a) a reduction in the battery Ah capacity and (b) to impede the charging process causing the battery to become very hot
3) in minor sulphation cases extended periods of charging at low currents will improve the situation.,but in serious cases the battery becomes unusable because of internal short circuits which result.
a short passage from one of my motor electronic books.it may explain it a bit more.
Post last edited on 18/09/2010 11:15:12
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