LiTime 48V Battery Equalizer, Active Balancer for 24V/36V/48V Battery Bank, Supports for LiFePO4 Lithium Battery, Lead Acid, Gel, FLA, SLA Battery, Perfect for RV, Solar, Trolling Motor, Off Grid

I did my research on this company before purchasing any products from them. All turned out to be great reveiws. I purchased the LiTime Battery Equalizer to balance out my 4 12v batteries in series. After about a day, all 4 batteries were the exact same. Yes purchase this product.

I hooked up the device and hope that is works..I wish there was a light indicator...

I was experiencing "imbalaces" with 4, 12 volt 100 amp Redodo batteries. The bms would find one cell or battery that was slightly difference voltage and shut down the battery, then the 24 volt inverter would shut down because there wasn't 24 volts anymore. Even though the batteries were close to full charge, they just had to be different state of charge, enough to bother the BMS. I am NOT THRILLED with Redodo, my fault for buying the cheapest batteries I could find. The LiTime battery equalizer has solved the problem, 100%, its easy to install, its small, inexpensive and WORKS great! If you have more than two batteries, you might consider this.

I've tested this thing a bit and I'm impressed. It seems serious about bringing the batteries back into voltage sync when I perturb the situation on purpose.It doesn't get warm. Just sits there doing its job. Based on the delta amps I was seeing and it not getting warm, I think it's an active balancer / equalizer (moves energy, doesn't just burn it off as heat), which is great.It feels heavy enough to be real.I didn't hear any audible coil whine, but it's possible there's some ultrasonic whine, or that it might whine more audibly with other voltages than I tried.

I installed it in 15 minutes. Take care to leave the negative lead protective covers in place until final connection. I had planned to install a 10a fuse for each pos lead so that I could disconnect easily if needed. However, the thing just works! I have seen no excessive draw as other have noted. I have checked every day or two over the past month and the voltages are always within 10mv. My overall efficiency and capacity have not been adversely impacted. I can now take it safely down to 10% without one of the four LiTime Mini's disconnecting for low voltage and shutting down my 48v system. This is about 6-7% more than before the balancer. This balancer is worth the money.