Review on ZHC Battery Equalizer/Balancer: Extend Battery Life in 48V Series-Connected Solar Systems by Joe Stax

Installed a few days ago, 2 full charge/discharge cycles have passed, the batteries are still not very balanced. There is no indication that the device actually works, other than that it is slightly warm. Will keep it updated. UPDATE 1/31/19: Forgot to update last year. The device never worked after confirming with an ammeter. The company refunded my money although I wish they had sent me a replacement to try as I could use 4 of these at once if they actually worked.