I've got three 2021 M12 6Ah batteries that just won't charge anymore. I've checked them with a multimeter and noticed they're unbalanced by about 0.8A on average. While I've read that a DC bench power supply can help charge the bad cells at a low amperage, I'd really rather not go tearing into the batteries and messing with the internals. Any advice from battery enthusiasts would be greatly appreciated! Thanks!
1 Answer
It sounds like you're dealing with a common issue. These 6Ah batteries can get unbalanced quite easily. I suggest picking up a battery balancer like the SKYRC B6 Neo A/C, which is around $50 on Amazon. You'll also need some JST-HX 3S pigtails, an XT60 female pigtail, and some alligator clips for connecting everything. It'll really help with balancing your packs!