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Old 01-28-2018, 06:31 PM   #1 (permalink)
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Join Date: Nov 2017
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Default Power supply charging question

Hi there. I have an I charger 306b and a 12 volt 75 amp 900 watt charging supply. I recently charged 3 4500 mah and a 5000 mah 6 cell batteries at 18.5 amps and the wires going from the charger to the power supply were really hot. Is this normal?
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Old 01-29-2018, 07:31 AM   #2 (permalink)
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The wires are not generally hot with a 24V power supply. In your case with a 12V power supply, I would expect those wires to feel warmer, but I donít know how warm/hot is acceptable.
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Old 01-30-2018, 07:56 PM   #3 (permalink)
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What gauge wires are you using and what is the distance from the power supply to the charger?

The load and distance determine the wire gauge needed. Using a lighter gauge wire than necessary is one reason that can cause heating in the wire.
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Old 01-30-2018, 08:38 PM   #4 (permalink)
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The wires are the stock 12 gauge wires that come out of the 306b charger and also standard length.
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Old 01-30-2018, 11:51 PM   #5 (permalink)
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The wires must be rated for the maximum input current that the charger can accept, so there really shouldn't be a problem. Silicon insulation can stand a lot of heat.
You would however greatly reduce the heat by using a higher voltage supply.
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