21V 2A 18650 Lithium Battery Charger DC5.5mm Power Adapter Charger (US)
Price is below average
Current Price
$6.33
Average
$6.47
Min Price
$6.33
Max Price
$6.62
Price dynamics
2%
Price will be lower
in next 2 weeks
in next 2 weeks
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Product review & video
okay so we have bench power supply here and I'm going to show you how to charge lithium batteries so we have the voltmeter hooked up six point five four six point five four now if you turn the current all the way down it'll end up dropping here oh that's fine and do the course see it drops so that means that it's gonna put up no voltage in so turn it back up the way we got enough current to put the voltage that we need now let's say okay your alternator charges at what fourteen point eight yeah fourteen point eight fourteen point six say we want to charge like this battery to go to fourteen point six will set this fourteen point six okay take this off here so we have negative and positive here then I see the voltage drop down dropped all the 14 and here's our current so you have two amps to current you can either side down and slow charge or you can turn it up and charge faster say you
