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- Battery Equalizer HA01 is used for the 12V lead-acid batteries which are connectes in series to keep battery voltage balance.
- When two or more in-series connectes batteries are in charging/discharging/free status. The battery voltage maybe become different. One battery voltage is high and one is low.
- The battery equalizer will equalize/balance the battery voltage when it detect there are 20mV between two batteries. It will shunt current from one battery (the higher voltage one) to the other battery (the lower voltage one). Until their battery voltage almost becomes same. This will improve battery's performance and extent battery's life time.
- Battery equalizer can be used for 24V, 36V, 48V and any other N*12V battery system.
Specificattion:
Battery nominal voltage: 2*12V
Optimizing current: 0-5A
Quiescent current:
Protection: reverse polarity protection
Low voltage disconnect: 10V
Package includes:
1 * Battery Equalizer
1 * User Manual
Skipper
August 2, 2025
Ordered two, one works & one doesn't work. The faulty unit's "B" light is always flashing even when I switched connections to the batteries so that the "B" battery became the "A" battery. The "B" light still flashes continuously. The faulty unit would eventually deplete both batteries. Batteries are brand new LFP charged and rested in parallel before putting them in series. The other unit works as expected confirmed with multimeter.
Tony
July 13, 2025
Title says it - I’ve had this equalizer about a week now and the batteries stay within 0.01V of each other. Before I installed it the 2 150aH LiFePo4 batteries were several tens of volts apart.The 2 simple LED’s on the front of the unit make it easy and clear to see the batteries are balanced, and if not, which one is being “charged” and “discharged”Note “charged” and “discharged” isn’t exactly accurate, the equalizer doesn’t present a significant load on the batteries, it simply transfers a very small amount of current from one battery to the other if needed.This unit replaced my previous Eco-Worthy unit.
L-82
June 14, 2025
I have several of these at our cabin with 8 batteries. Have used this for several years and they really do improve the life of your batteries. They work great keeping the batteries level with each other so that one doesn't over charge and another deplete.If you have a system with several batteries I would highly recommend using this with your system. We have 8 AGM batteries and 4 of these units and it keeps the charge of the batteries the same across all of them.
S. Chuon
May 4, 2025
I purchased two to balance my four batteries. They were working fine for a while. One of them caught a fire today after I reorganized my shelf. Fortunately, I was home to eliminate the threat.
JHoney
March 5, 2025
I wanted to use this to balance 12.8V LiFePO4 packs before bonding. They are supposed to charge at 3A, so I was a bit worried this 5A balancer would be too much. In practice I didn't need to worry. I have only seen a little over an amp, and that was only when the battery voltage differed by more than 1 volt. The normal voltage range for these batteries is quite small so I could only see this when I attached one of the batteries to the charger.Edit: I ended up with a different use case for this device. It is now a battery tender. I can use a lifepo4 pack to keep my car on the street topped up, just changing out packs every week or two. It is slow as lifepo4 packs are only a volt above my desired car battery at peak, but it does the job and fits easily under the hood.For already close batteries the current is quite small (0.2A) so it can take a while to balance. Not sure if this is the intended behavior, but that's been my experience.The flashing indicator works as described in the manual to indicate which battery is lower, and receiving charge.Build is a plastic case clipped together. The circuit board is potted inside. Seems like hard epoxy type. There's a large 63V capacitor visible, and 4 of some squarish mosfet-like component. A few smaller capacitors are visible.The wire is marked 16 AWG, but seemed smaller like 18 AWG. Had trouble stripping it with my stripper set to 16 AWG. It was terminated with ring terminals, but I replaced them with spade terminals.
JPS_5
December 28, 2024
I am using it for a 1500W UPS with two 12Volt series batteries (total 24V).It seems to be balancing the batteries correctly.
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