Charging 4s battery pack with 3s charger
Has anyone experimented using a 3s charger and a boost voltage regulator with cc/cv to charge a 4s battery pack which has bms?
My solar charge controller can do 3s but not 4s lithium ion output. It can be set to output 15v max. I want to boost that to 16v so I'd be charging the individual cells to 4.0v. I think it should work but I don't want to make smoke and sparks