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

Used on 3 12 v lithium batteries, one 12.6v the other two 13.3 . Now all 3 are 13.3 . Working as it should so far , one week in

Use these on my solar setup running four 12v to make 48v and have been keeping the battery’s in balance,

Works great definitely balancing power in my 3 12v lithium batteries.

Seems to work! No visual indicator, but a voltmeter shows the batteries (4) are perfectly balanced. Wish it had an LED or 2 to indicate if it was on or actually working and if it's balancing up or down between any connectors. Note that the wires are a bit short for 4 batteries in a series, as the furthest connectors are just out of reach. Had to splice and add wires. I'm good with doing this , but not everyone would be. Ideal product would have 4 volt readers and an led showing direction of any balancing. But that's not fair to judge a product on what I wish it was. I knew what I was buying. Didn't ding them for this. Just a suggestion of something I would buy

Way easier and works 100x better than the three Victron balancers it just replaced. 48v 4S3P.

I bought this equalizer to leave installed on my battery string. It appears to have failed within 6 weeks and would cause my battery voltages to drop very quickly and lock out the BMS. Eventually things would reset after I broke the string and charged the batteries on their own. Everything has been fine since I removed the equalizer. I like the idea and I have no idea if I just got a bad unit or if it there was something wrong with my application. I did email with LiTime tech support and they seemed to indicate my unit failed but they didn't offer a replacement or any troubleshooting steps. LiTime has otherwise great to deal with so not sure what happened here.

A MUST HAVE for batteries in series to maintain equal voltage distributed across each charging & discharging. This is the best unit I've used to date in multiple installations.

I bought this when I bought with first 4 12.8v LiFePo4 batteries that I wired in series for 51.2v. These batteries were to be used with a solar inverter to power my house during outages. I read all the warnings about batteries in series becoming unbalanced over time thus affecting the longevity of the pack. I figured an active battery balancer would be perfect keep everything in line. After my research I settled on this brand. The reviews appeared good and the brand from what I understand was reputable. I charged all the batteries in parallel to 100% first, let them sit overnight then proceeded to connect them in series. The instructions say to install the leads from left to right and that's what I did. The next day, one battery is 200mv lower than the rest. The next day another battery is 60mv higher than the rest. This cycle went on for weeks. They never balanced. To make matters worse because it couldn't balance it never stop running draining my batteries very quickly. What's ironic is after I uninstalled it is when my batteries achieved balance. I've also used this on another set of LiFePo4 in series and had the same result. I'm just going to assume I got a defective product as I'm seeing reviews saying it works. Update It turns out the one I got was defective. Support reached out to me and we went through several troubleshooting steps. After determining that the unit was indeed defective they sent me a new one free of charge. Been testing the new one for several days now and it works flawlessly. Thanks LiTime, I will definitely recommend.