Re: 222 battery circuit

Brian Cockburn
 

Hi Alex,

Some time ago I did
go as far as Installing a 2x 18650 batteries and holder inside the battery bay
of my 222 and it works quite well, but I still have to charge the cells on an
external charger base.
There are chips that are able to charge two Li-ion cells in series. The TP5100 is one such chip. Search for "tp5100 module" to find pre-built modules that don't require you to solder to the tiny chip. This might make an on-board charger you spoke of possible.

Cheers, Brian.

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