> They both claimed
> that the HF units can eat your battery because the float
> circuit doesn't work.
As I see it, they didn't have a "float" circuit at all. Just a constant
(regulated) voltage.
> A buddy had several and they all died
> before eating any of his batteries.
So did mine. But likely that was because I didn't fully charge the battery
first. They apparently have no current-limiting circuitry in them; only the
output resistance of the wall wart. Faced with the load of a discharged
battery, it eventually overheats and burns out. When I tried upgrading the
wall wart, the electronics box melted.
> Battery Minders also desulphate, which seems to have helped
> several of the batteries I've used them on, including a small
> battery, once dead and then it sat in the shop for many years
> uncharged. Now it's fine.
Interesting. I've got a few of those myself. You're talking about the
units from VDC Electronics, right ?
http://www.vdcelectronics.com/batteryminder_12117.htm
Randall
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