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Hi Battery chargers will put out 100 amps & more sometimes. I try to minimize the higher charging rates, but sometime you don't have that luxury. Certainly, I have jumped the starting systems, but keep an eye on things. Hydrogen gas is given off during the charging, so its best to apply &...

Sure. It must be a DC machine. Turn the amperage setting down to about minimum. Be careful of the polarity of your leads. When using "Reverse Polarity", electrode is Positive. The jaws don't open wide on electrode holders, so C-clamp a small scrap of metal to the positive terminal of your...

In all the situations above, its best to have a meter, and check each batteries condition. Then go from there, so you know hat your doing. A fully charged 12 volt battery is 12.66 volts. The batteries can be checked, one at a time, even being hooked into the system - just run your meter leads...