Review on Charger Vympel 57 black by Petar Georgiev ᠌
I am amazed at how well the product is made, just magically!
When charging a 100Amp battery, the output wires (+ and -) are HEATED and changed to a larger value. The fan turns on after a strong heating of the power transistors (they may burn out). I installed a 12 volt power supply (from the charger / telephone) for constant cooling and the fan is more powerful. Everything is working.
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