Yes, it totally works. I had a pair of decent batteries in a pick-up of mine I have at a friends farm. After 4 years sitting dead (4 Alberta winters did em in) I brought them home and did the epsom salt thing. I then charged them at the high setting for a few hours, then switched to trickle for overnight. Next morning I again went to high amp charge for a little while...then let the battery rest for a few hours. When I began the battery had less than 5 volts, and I think the second one was worse.
After the battery rested for a few hours, I checked voltage and it was pretty steady at 12.4 volts. A few days later it had dropped a little, so I charged it again, just on the trickle charge. After a few days of charging and checking the battery held a charge at 12.65 volts. I stuck it in my Blazer and forgot about it. A year later and several starts of the Blazer but no real significant run time I sold the Blazer with the rescued battery still in it. It started like a champ.
I have the second rescued battery in my garage. I haven't checked it in a while.
I've have the Canadian Tire MotoMaster Eliminator version of the following battery charger (below link) / bought it a decade ago, for $99.99 on sale.
- often a bad battery will stall to fully charge at 70% recovery
- alternate between charge & de-sulfate mode 2-3x and often a Full charge (100%), can be achieved
- older battery can stall to fully charge at 55% &<70% recovery range / need to trick battery, to take a digital charge (fancy machine, don't work below 70%)
- so back to my 40 year old conventional charger (from CTC), for up to an hour / next de-sulfate mode / and top up with digital charger
AcDelco I-7005T Battery Charger is a automatic microprocessor controlled battery charger. It is designed to charge 12 volts rechargeable lead acid batteries with rated amp hour capacity of no less than 12 Ah. It designed to use on Gel cell batteries such as those used in cars, trucks, farm equipment, boats, lawn mowers, tractors, airplanes, motorcycles, vans, RVs and SUVs, personal watercraft, snowmobiles, ATVs, trolling motors, etc. Lighted, digital display shows charging voltage, charging current, % Charge, Error Codes and Operation Mode. Charge rate settings of 2,10,20,30,40A,
PLUS a special Maintenance mode which sends a controlled pulse which helps slow down the effects of plate sulfated.
-- Edited by Beaumont67SD on Monday 13th of August 2018 10:01:43 PM
