Quote:
Originally Posted by josiahg52
A 2A fixed charger will restore pretty much any "dead" 12V automotive battery. I have an ancient Schumacher for exactly that purpose.
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No when I said dead I mean DEAD. What the pulsetech chargers do is blast the sulfation off the plates in the battery. You will see it actually floating on the battery acid after using it if it has any. The problem you can run into with a very bad battery is it can make the battery worse before getting better since what you caused to come off the plates can actually settle back in a way that is worse that it was.
Repeated chargings will break it up smaller and smaller but it can be right stubborn on some batteries.
I fixed one once that was so bad I had to pour off the scum from the top and add water back.
The things work. The military uses them on tanks and such. These are the consumer versions. You can buy a new car for what the high end chargers they have cost.
The main purpose for me using them is the maintain those $250 plus batteries I run in the my bmw's. Deka intimidator batteries are not cheap with 5 different cars using them I do not want to risk having to replace them.
I have about 30 cars and trucks total. The ones with these charges have never failed. The ones with the battery tender chargers have had 2 batteries sulfinate.
The batteries that were disconnected but not charged ended up showing 12.3 volts or more but would go to 6 to 9 volts when you opened the door on the cars. So volts but no amps. One wouldnt charge over 6 volts.