On 7 Oct 2008 at 10:12, Jinx wrote:
> So car batteries with calcium certainly do exist. In fact it may be that
> most automotive batteries sold will be lead-calcium or hybrid
> 
> If that is so, then what confuses me slightly are the charging voltage
> figures. AFAICT, no battery I've looked at so far has a "Recommended
> Charge Voltage" figure on the label, so you may be innocently over- or
> under-charging

Just to throw another worm into the can (of worms), for some reason or other I've 
always thought that vehicle charging systems charged at initial high rate, approx 
14.4 to 14.8V, then dropped back to something safer, say 13.6 ~ 13.8V. Thought 
that this would likely be time based, say 5 or 10 minutes after starting, or somehow 
current based. I've never actually measured it to see if this is true of car charging 
systems, nor read anything that confirms it. If that is the case then it would suit a 
wider variety of battery types. I dread the idea of a car battery charging indefinitely 
at 14.8V.

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