20A Lithium Battery Charger for 12V & 24V LiFePO4, AGM, Gel, SLA - Portable Car Battery Charger, Maintainer, Trickle Charger & Desulfator for Automotive, Marine, Motorcycle & RV Use - Perfect for Long-Term Storage & Winter Maintenance

Keeps track of amp hours into the battery, works as it should, cooling fan starts out noisy but quiets down in a few minuets.I've had the 20amp charger for about a month now and it works great! I've been using it on a 50ah and 100ah LifePO4 batteries and it just works. I'm able to drop the charging current down for the smaller battery which is nice. Terminal clips are nice and strong. I also like how it remembers the last settings I put in so I can just plug it in and start charging without worrying about messing up my battery.This is a 20 amp or 24v battery charger with four modes and one key start. This provides a fast charge for your battery. 10s after starting to charge it will automatically lock to prevent accidental touch. This is small size so it's easy to take with you and store anywhere. You can choose 12v/5A, 24v/3a or 12v/10a, 24v/5a or 12v/20a, 24v/10a so make sure you choose the appropriate current needed to charge your batteryI bought 3 of these to charge some new 100 AMP LiFePO4 batteries. They worked great doing that. The batteries drew about 17 amps at the peak and consistently 15 amps till they were full. The charger never really skipped a beat. Then I moved them over to some 50 AMP AGM batteries. Again, flawless performance. A nice added feature would be to alternate the amp hours with the full message when it finishes just so you know how much power it put into the battery. Overall I give this a solid 5 stars.Stopped working after only 2 months of use. Retailer quickly sent a replacement, will update after further review.With this power charger I don't need to use weak motorcycle chargers on my car anymore!At 20 amps it can fully charge my car in less than two hours. No more overnight charging.Nice features like battery recovery mode for that old battery you what to resuscitate and save buying a new one.I like the flexibility of choosing the charging current/time, and being able to monitor several parameters like current, temp, etc.Price is great for what it can do, I don't understand why I didn't invest in one of this before. I am ready for winter now!I did bring a CPL dead batteries back to life. It also charged a lithium battery with no issues.I was in the market for a new charger and decided to try this one. There is a switch to determine amperage and a button to pick type of battery. Once picked, connect the battery and it automatically starts. This is great as long as your battery isn’t dead-dead like the one I wanted to try to repair. Worked well on a low battery (not dead-dead) and it’s a step up from my old charger which maxed out at 12v 15a. Definitely recommend and would buy again.Overall it seems nice but I have a 24v lithium battery I'm trying to wake up and there's no selector for 24V I assume it just detects the voltage and will adjust to it. Problem is, it's not detecting the 24v on a dead battery and automatically sends 12v which is not able to wake up the battery. My case is isolated compared to other users and I assume it should work ok. Will probably keep it for small 12v stuffCharging my 24v batteries for weeks now one after the other without any problems, cables are a little short but decent quality, output seems to be close to the ratings, I have a few different chargers as a hobby and this one was a good buy for the price in my opinion.Il fonctionne 24h depuis 3 semaines et tout va bienIt performs as it is advertised.