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Just woundering about using a 6/12 volt battery charger as a arc welding rig instead of car batteries rigged together? Answered


Battery chargers don't often have the capability for high current. In fact, many of them limit the current to very little (trickle chargers) on purpose. A battery charger is not a battery, and you can't use it as one. Lead-acid car batteries can provide very high current draws. This is why they're used for things like this.

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