I’m fine with just being able charge one module at a time. I’m looking to test/recondition my factory modules as a backup to my new modules.
since you're asking here - single port since you mentioned doing one module at a time. EV-Peak C4 80 Watt Balance Charger - RC Accessory quadport look at the CQ3 models by whoever is selling them . I think there are 3 different manufactures now, since EV-Peak stopped production for a couple years. Can't say which is the best, since that's just fodder for argument at best, but the most posted about how to settings and use, in posts here is the CQ3 series. IMO - - -
I ended up getting this. It’s fine, maybe a little slow on the discharge. I think the highest discharge I’ve seen is 0.7 amps, maybe 0.8. A slow discharge is probably better for the module but it takes a couple of days for 5 cycles on a module with moderate capacity. I’m in no rush though. Tenergy 1S-6S https://a.co/d/4fEgn5v