On Monday, December 31, 2012 9:15:19 PM UTC, Jaime Dixon wrote:
On Friday, December 28, 2012 9:05:27 PM UTC, Rick Hughes wrote... Anybody know of a simpler circuit ... all I need is ability to charge 6 & 12 V batteries, non-deep cycle.



Similar prob:? --2 year illness meant no charging of two gardening strimmer and cutter batteries. They now dead and dont respond to chargers. Would e.g. a 210 shot (like a defribulator) or similar do it? Or are the batt's dumpers?

You can supply a de-sulphiting pulse, it's not that high a voltage just enough to be above cell gassing limit.