20-Amp Smart Battery Charger,Lithium,LiFePO4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/deep Cycle Charger,12V/20A and 24V/10A,for Boat,Motorcycle,Lawn Mower,Golf cart..

The Smart Battery Charger works on Lithium, LiFePO4, and Lead-Acid batteries. Used for charging, Trickle, or Maintainer, works on any battery. It worked great on my dead motorcycle, ATV, and mower batteries; they all charged perfectly. The charger is compact, has a digital screen, is easy to operate, and has sturdy alligator clips for connecting to the battery. See the manual for proper settings of charging speed and voltage mode. Great price and item.

Had over discharged a 280 AH lifepo4 battery. This woke it back up and charged it. I was getting a bad battery reading on a lead acid battery and it wouldn't charge. I used the repair function on the battery and was able to start the van and use the battery normally. Display is easy to read even in full sun. Cords are nice and long. Battery terminal connectors are small enough for tight spaces and big enough to grab larger terminals. Have not used it on a 24v battery. Would buy again.

I’m thoroughly impressed with this 20-Amp Smart Battery Charger! It’s everything I needed and more. From charging and maintaining my car battery to keeping my boat and lawn mower batteries in top shape, this unit handles it all with ease. I really appreciate the versatility—it works perfectly with 12V and 24V systems and supports multiple battery types, including Lithium, LiFePO4, AGM, Gel, and SLA.What really stands out is the smart charging capability. It automatically detects battery condition and adjusts the charging cycle accordingly, so I don’t have to worry about overcharging or damage. The display is clear and easy to read, showing voltage, current, and charging progress. Plus, the trickle charge and maintainer features are perfect for keeping my deep-cycle batteries ready during the off-season.It’s compact, rugged, and simple to use—even for someone who’s not super technical. I highly recommend this charger for anyone looking for a high-performance, dependable battery charger and maintainer. Worth every penny!

20-Amp Smart Battery Charger,Lithium,LiFePO4,Lead-Acid(AGM/Gel/SLA..) Car Battery Charger,Trickle Charger, Maintainer/deep Cycle Charger,12V/20A and 24V/10AI bought two of these from Amazon to charge up my LiFePO4 batteries for my off grid cabin setup at 9000’ in the Colorado Rockies. They work amazing – charging those to somewhere around 14.4-14.8 volts automatically. Not only did they charge my LiFePO4 batteries, they also revived my deep cycle L-16 batteries that the LiFEPO4 batteries replaced. The L-16 were the standard for solar a few years ago, and my L-16’s are about 6 years old on their last legs, needing constant monitoring, gassing off of acid, and needing to be refilled with ever scarce (during the pandemic) distilled water. The charger revived 3 of what I thought were dead L-16’s (and topped off the other 5). I’m now going to move those down to my garage to use in another solar application that’s not so critical (cabin itself is critical for furnace heating on propane when we’re not there, therefore the swap out to LiFePO4’s from L-16’s). The charger itself: display is very bright, buttons are well made, it remembers which battery type you last charged although very easy to set that, you can select the amps for charging which is great for low amp charging of ATV or Snowmobile AGM smaller batteries. Last weekend I had to move my LiFePO4 batteries inside due to severe freezing conditions and used the two chargers to top them off and make their voltage reasonably close to the other LiFePO4 batteries in the system before placing them back on the solar/gen-charger system. Worked perfectly. Also, since my main system is 24v, I can hook the charger up to the main battery bank on the main pos/neg to charge the whole system if needed. The chargers also have that recovery mode for Deep Cycle Lead Acid batteries, and that also works for normal car/truck starting batteries as well. Recovery mode on mine took about a day for it to cycle the lead acid cells – you can see/hear the acid bubbling when it does it and need to keep eye on acid/water level every so often as it recharges them, like I said I though they were deader than a door nail and they are now revived. I’ve looked at other multi-battery-type chargers, and these chargers fit the bill for my dozens of batteries and currently 4 different battery types – LiFePO4, deep cycle, starting, and AGMs – the mode button allows you to select which battery type for the proper charging voltage and cycle. I’ll probably buy a few more for use at my main house in the city.

There's several flaws in how it's designed, software (or firmware) wise. First, the voltage of the battery shown on the display is incorrect. I have a 12 volt LiFePO4 & this unit shuts off when the voltage reads 14.7 & shows FUL. That number is incorrect. With a multimeter, the ACTUAL voltage is 14.2 Same wrong voltage when I start to charge it. That number is (for example) 13.1 with a multimeter. The charging unit shows 13.7 at startup, so it reads higher than in real life, so keep that in mind. You're not getting as much as what's displayed.Secondly, this unit does show how many amp hours it's putting into the battery. That's great but.....you have to be there right before the unit shuts off or you'll never see how MUCH it put into the battery. In other words, you'll only see how much voltage & amp hours it's putting INTO the battery & not how much it HAS put into the battery....total voltage & amp hours at end of cycle. It'll only show "FUL" at the end of the cycle no matter what you do. Big disappointment there!Other than the two flaws above, this little unit DOES charge the LiFePO4 (with BMS) I have just fine. Doesn't take long when I use the 10 or 20 amp option. I'll probably never use the 5 amp option. That would take FOREVER to top off this battery!And yes...as other have said, the fan is very loud when you use the 10 or 20 amp option. But...it keeps the inside of the charger cool. Ya don't want a fire, do ya??

I ordered to charge my 12V Lithium and lead batteries I use for my outdoors activities. It worked great! Charge batteries fast. Light weight and durable. Nice cord length, nice easy to read design.