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Nico80 If the charged batt shows 15.x volts on the output, it’s then 4S battery pack. So the total capacity is 1800ma/h, not 4 times 1800, because the 4 cells are in SERIES, not in parralel... just a 4s 14.8-16.8v power bank where the mains connectors are available to jumpstart a car

Rafer 24/12/2020
9
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Nico80 the “18v” marking on the PCB is the OUTPUT (ac), not an input! if you apply dc to transformer you will fry it!! That’s basics dude! feed it with 12v arounf the cap, then you should have 18vac along with 220-380vac

29/08/2018
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