I am currently working on a project, which should contain a Li-Ion battery pack in the form of 8 18650 cells in 4S2P. The main consumers of the build are a class D amplifier and a single board computer, probably a Banana Pi Zero.
I would like to have a charger and balancer circuit integrated in the project, which would ideally be controllable in some form by the SBC. A charging voltage from 16V DC (or higher if needed) would be supplied by a power jack.
I have looked for charging and balancing ICs, the only suitable one I found, is the BG24702/3 from TI. It could handle the charging, but requires a huge amount of external circuitry.
Other ICs I’ve found, are only offered in QFN packages or similar. But I want to be able to solder everything by hand
Do you know a good and/or simple method for charging and/or balancing? Is it possible to get a simple CC/CV power source and then charge and balance periodically?