Looking for 5 cell (series) charger board for 18650 Lithium batteries

[BobW]

I've got a couple of old 18V cordless drills, that I'm upgrading from NiCad to 18650 lithium cells. No problem find battery management boards, but I can't find any charger controller boards that will handle more than 4 series connected cells. There are some programmable boards available that you can set the voltage on, but I'd much rather find a fixed voltage charger board. Anyone know of a source for these?

 

[Externet]

Abundant; even cheaper at pawn. In many flavors. Has what you want inside.

 

[BobW]

Thanks, but I'm only looking for the charger board. I don't know that I'd trust a used lithium battery charger, and I wouldn't pay 25.00 for a new one when I can buy new charger pcb's for under 5.00.

 

[Nigel Goodwin]

How about building your own?

Build a Lithium-Ion Battery Charger on Arduino | μF

The tutorial of a DIY Lithium-Ion battery charger implemented on Arduino with several advanced features like state-of-charge estimation, EEPROM logging, command-line interface and more...

www.microfarad.de

 

[BobW]

I found this:

https://www.temu.com/ca/18650-li--charging-protection-board-12a-overcharge-short-circuit-protection-with--connector-for-drills-green-g-601099627444702.html

The listing is a bit short on details, but it's only 6 dollars, so I think I'll order one and check it out.