Hi

Been a long time lurker and have enjoyed reading but I have taken on building a cat from scratch, and now have a question.

It’s a version of the max car that others have built here.
Any way my question is about chargers and charging batteries run in series.

My plan for now is to run 2 2s lipos in series, I?m doing this versus a single 4s for weight distribution. So I understand balancing a Lipo when charging but do the two batteries have to balanced with each other if run in series? If so how do you do that?

Lastly can anyone recommend a good AC/DC Charger that can charge two batteries at the same time? Are external balance boards better than the chargers that say there built in?

Sorry for the long post and thanks for any help!!

Paul