NEXPEAK NC301 20-Amp Car Battery Charger, 12V and 24V Smart Fully Automatic LiFePO4 Battery Charger Maintainer Trickle Charger w/Temp Compensation for Car Truck Boat Lead Acid Lithium Batteries

I've charged a few 100ah lifepo4 batteries with it and so far it seems to work flawlessly. I even tested the batteries afterward and they seemed perfectly charged. It wasn't anywhere near as loud as I thought it would be. It makes some noise but not much. The closest thing to a complaint I can think of is that when you plug it in it makes a spark at the plugin. This is regardless of whether you have a battery attached or not. I think this is normal though for chargers since they probably have capacitors that pull in power real fast when first plugged in.

I've only had this charger for a couple of weeks and I've already put it through its paces.I've charged two 100 amp hour, LiFePO4 batteries, charged up my lawn tractor's battery and topped off the charge on all three of my cars. Through it all, it has worked flawlessly. It even restored a 12 volt battery I thought was dead and was going to throw away (recycle).This thing is super simple to understand. Yes, I read the manual. But I could have used it without bothering to.Are there better chargers out there? Yes, but at this price point it's hard to argue with the bang for the buck you are getting. It charged one of my nearly empty 100ah LiFePO4 batteries to 114 amp hours and did it in six hours. Yes, it's a bit noisy on the 10 and 20 amp settings. But unless you're sitting right next to it, it's hard to complain about it.I wouldn't use this in a commercial setting. But for home use, it's a no-brainer. Overall, I'm impressed with this charger.

It never reaches above 18 amps, and is quite loud. But its does they job and is easy to use. It has a nice long cord too.

Great little charger, zero issue and easy to use... highly recommended

Works great easy to use would buy again

Total junk in my opinion. It will not give an output unless the battery is close to voltage, when it does detect a battery, it says it it fully charged when the battery is at 9Vdc. I had this delivered at the end of December, discovered this issue in Feb. Cannot return to Amazon, contacted the seller, they wanted a video showing what it was doing. I cannot give that as I used another charger to charge the battery. Never heard from the seller again. Item should be under warranty from the seller. I guess they don't honor that. I just wanted a replacement. But now I am not sure about that.

been using this for a while now and all is good. As others have noted it doesn't put out full amps on high but it's close at least as far the a readout claims. I haven't tested it with an amp meter so there's that. Using on a 50AH lithium battery so I mostly use on the middle setting (10A?) anyway.

Quick and easy setup. Works great as advertised.