20-Amp Smart Battery Charger,12V/20A and 24V/10A.Lithium,Lifepo4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/Pulse Repair Charger,for Car,Boat,Motorcycle, Lawn Mower

Purchased to charge lithium battery bank. Works really well and have also charged lead acid car batteries. I like the display, shows all data and how many amps have been pushed into the battery. Easy to set up and use. Would buy again.

I love this thing. Small, light weight, quite and powerful. The readout window lets user know exactly what's going on in real time. I personally like the removable cords which makes storage neat and quick.

I purchased this charger for my LiFePo batteries, and it works great. I have also used it on several lead acid batteries. I am very satisfied with this battery charger. This battery charger is small, simple to operate, and works as advertised. Very happy with the quality and price of the charger.

The Good:Its small and lightweight... and CHEAPComes with attached color coded wires and ClampsThe power wire is quite long. But not 10ftIts got a crisp well sized screen given how small it isIt seems to regulate charging using ambient temperatureIt does not seem to overheatIts very simple to operate: It has a manual switch for current intensity (5/10/20), although it regulates UP to that intensity. It always starts below the rated selectionIt allows push-button toggling between "repairing" or charging Regular/agm, Lifepo4, and Lithium batteries, (that fingerprint looking image)It automatically starts executing as soon as it detects voltage across the clampsIt is advertised to have reversing and shorting protectionThe BadThe wires are permanently attached. You get clamps. No optionsThe screen prompts are cryptic. EG: PUL for pulse (repair), FUL for ChargedThe meter is not very accurate. Tends to read 0.1 V higherThe thermometer isn't very accurate eitherThe Fan is VERY Noisy, and ON most of the timeIt didn't see it do Maintain/Float. It charges once per manual interaction - eg disconnect and reconnect the clamps. I left my LiFePo4 to rest down to 13.4V. Thats about 95% charge. It didn't kick back in.You need to deceive it to charge any battery under 7 volts.Consequently, It will not reset a sleeping BMSI tried recovering a drained lead/acid UPS battery with this device. I refilled the cells with distilled water, and used the recovery setting. No response. Hooked a 12V car battery in parallel, and it started 'PUL'sing. After reading 10V, I disconnected the larger battery. It kept going, until it read "FUL"-13.6V. But the battery was still drained, at 6V. So don't count on it to repair any batteries.That said, I bought it to bulk up my LiFePo4s on overcast days. It took them up to 14.5V after a LONG charging session (12 hrs + for a 200Ah capacity, I think that's a 0.1C max rate). So that works pretty well, though a little slow for large batteries.

After thoroughly researching battery chargers for lithium batteries, I selected this one to charge my trolling motor battery. The price was well within budget and it had great reviews. After using it twice now, I will add to those good reviews and say this is a great buy. It may not have all the bells and whistles of more expensive chargers, but it charges batteries and has the added features to protect the battery from over charges, over heating and cross connection.

The media could not be loaded. I wanted to like this battery charger as an upgrade to the old analog ones that I've had in my garage foreverI was specifically attracted to the ability to charge lithium ion as well as having a repair mode for normal lead acidMuch to my chagrin there are some serious issues with this charger and it does not seem even remotely like it should be trusted to charge batteriesThe attached video and picture show an AGM battery that I know to work charge to about 10 and 1/2 volts which should still require further charging to about 12 and 1/2 to 13As you can see the unit recognizes that 10 and 1/2 volts as full, which even a basic battery charger for a 12 volt lead acid would tell you that it's notThe repair mode also does not work on lower voltage batteries as I've tried it several times. It only works on batteries that function which defeats the purpose of having a repair modeThe only pros that I can list here is if you don't have a battery charger, this could potentially get you 75% of the way there and it's modular both of the cables attach on each end making it easy to storeMaybe this is a failed piece of hardware that just needs to be replaced but brand new out of the box I wouldn't have expected to test it nor do most people have the testing equipment required