--- In [email protected], Q <[EMAIL PROTECTED]> wrote:
>
> NO!Car batteries will sulphate and vent dangerously explosive
> hydrogen gas,are meant to be discharged quickly and recharged
> immediately and dont last long in backup service.
Sulphation is common to all lead chemistries, but only happens if the
battery is left in a discharged state for a long time. Not a major
worry for us.
Gassing is symptomatic of overcharging. If you are electrolyzing the
water, you are charging with too high a voltage. (or a constant
current charger, a BAD idea for lead chemistries)
The main difference between SLA and car batteries in this respect, is
that the SLA has a gas seal that prevents venting unless the gas
generation exceeds a certain rate. There MAY be a catalyst that helps
the H2 and O2 recombine, but I'm not sure.
While I'm at it, setting batteries on concrete will not discharge
them. This was true LONG ago like maybe 1930 or earlier, when the
cases were made of much poorer materials.
> Most site owners wont allow them to be used.
Non sealed batteries can also vent sulphur compounds which can cause
corrosion in nearby equipment.
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