ECO-WORTHY Battery Balancer 48V Battery Equalizer for 24V/36V/48V Bank, Supports for LiFePO4 Lead Acid/Gel/SLA Nickel-Metal Hydride Battery

This balanced all batteries in series, before run down couldn't keep up until battery balancer was installed, with no noise or excessive heat device does the trick, works great, as advertised

I have an issue before on my series and parallel connections on my batteries due to unbalance voltage. It took 2 days to balance my 1V difference from 2 of my batteries and even there is a high pitch noise, the device is working fine. Also, my power bank gained more power density.

Works as advertised, only reason for 4 stars is the annoying high pitch sound it emmits.

This unit keeps batteries within 10mvolts of each other even with an unbalanced load. Highly recommend!

I've bought a lot of Eco-Worthy products before and I think this was the worst purchase so far.It looks and feels cheap but worse of all, it emits a high pitched whining sound constantly!This sound might be acceptable if you're more than 10 feet away but I'd hate to have to hear this high pitched sound every time I am near my batteries.The sound isn't annoying or offensive but it's a constant reminder that I have this subpar device that was also expensive.I have a different balancer for my other battery bank, it's also cheap but it has a voltage readout for each battery and that doesn't make a sound and that thing cost less than this Eco-Worthy balancer.On the pro side, it seems to work. It doesn't get hot. The terminal rings are 8mm which match their battery lugs. The installation was simple. The wires are plenty long and flexible. It has a metal body. It's somewhat small.Another con, there are no leds or visual indicators to tell you that it's turned on or working.Overall, I wouldn't recommend this because that high pitched sound will get annoying overtime.

I have purchased 2 sets of 3 and 1set of 4 ECO-WORTHY 12v 100ah batteries. 1 of the sets of 3 were installed in ezgo lifted, 23" tires cart. 1 battery would shut everything down accelerating fast or going up hill. I contacted ECO-WORTHY 2 times for advice. To this day I have not received any reply. I researched and found out about battery balancers. I found them on Amazon made by ECO-WORTHY. I ordered 1 and installed it and the cart runs great now. I ordered 2 more and installed them on the other 2 carts Hopefully to head off problems in the future. A battery balancer should be included with any 2-3 or 4 pack of batteries or at lest let the customer know that it would be wise to buy the balancer. As for EC-WORTHY I will not be buying anymore of their batteries just because their customer service is non existents.

- update - spoke with the seller and they were able to either send me a replacement or refund me. Very understanding seller and was fast and responsive to my messages. I would try it out if it is something you’re looking for, and with any problems reach out to the seller.Bought this for our golf cart. It did not balance the battery and made a very loud humming sound.

Does not work well, has a unbearable high pitched whine, unresponsive support. Go buy something else.Bought two balancer units and I wanted to test it so I charged two batteries to 60% and kept the other two at 30%. Hooked up four eco worthy 12V 280AH in series with the balancer attached. It balances at a measily 3W which means it will be balanced in a month. It says 0A to 10A but it is really 0.25A if you are lucky.