Weewooday Charging Module Battery Charging Board with Battery Protection BMS 5v Micro USB 1a Lithium Charge Module(40 Pieces)

Charges a single 18650 cell quickly, charges 4 in parallel slower but doesn’t seem to mind doing it

Very inexpensive. Works as discribed.

Excelente 👌 👌 👌 productos

I would be really thrilled with these if it wasn't for the rather alarming chance of one of these modules is over charging the Li-Ion cell by abut 0.07 volts, which I had to change out after connecting to the battery and testing. As it is, 1 out of 5 of these overcharges and while it's not a big amount I was hoping for more consistent levels of charge cutoff. I'm still somewhat happy with the order but their QC needs to be better, and if you're doing a lot of cells be aware that you may have one or quite possibly more that does charge over 4.20 volts. So monitor their operation

Work great

Not getting the 1000 milliamp battery charge as stated in description can only achieve 700 milliamp.

These always come in handy, and you get so many too! Don’t hook them up to more than one or two batteries, or you will smell that all too familiar “is something electrical on fire” smoke.

Couldn't believe my eyes when I saw a 40 pack of these buggers going for $10! You could literally find listings on here for 2 for $10 or 10 for $10. 40 wow what a steal, fantastic and will buy again!