Power Queen 14.6V 40A Lithium Battery Charger, Intuitive Charging Values & 3 Status LED Display, Fast Charging Automotive 12V Battery Charger Maintainer for Lithium Battery with 4 Protection Functions

Charged my 200 amp lithium just fine. The cables to the battery are smaller than I’d expect but still worked well and never really got hot.

I used this to insure I had full charge on my Power Queen 100AH 12.8 vdc lithium batteries prior to installing them in my Travel Trailer. The batteries as delivered, showed 13.15 vdc, after 2.5 hr charge cycle they read approx 13.75 vdc. The charge cycle took about 2.5 hrs.What I did not like was the supporting ops manual. It just says hook em up and go, wait for the green full charge lamp..There are three values on the screen during charge cycle, Voltage output (max I saw was 14.3), AMP output (held steady from 40.2 to 40.6). Last what I think is Charge state of the battery(CAP), went up steadily from start at around1.4 to 70.1 late in the cycle. I never did see what final CAP reading was, as the batt full green LED came on.The two page brochure has no explanation of the values you'll observe and what the normal range is ...

I was going to purchase a different a charger, after reading the reviews I decided on this unit. The unit is very high-quality & works great Simple to use I couldn't be happier, it is plug & play !!

This is made by the company that make’s the batteries I use. It works very good glad i bought it charges a battery it 2.5 hours to 100 % cap

Decided to buy the first party charger since I was happy with the battery purchase itself. So far so good, seems well built and charges quickly. There is some fan noise but it's minor. My only small gripe is the display cycles through each item, I really wish I could manually select what was most important to me. Plus LCD panels are cheap, would like to see a separate display for each piece of info. But overall it's great, 100% would buy again.

Had a minor issue with wiring on 1st one delivered but manufacturer made it right and quickly. I was expecting 40a to charge a bit quicker but still I didnt know exactly what to expect. Seems like the unit took the better part of 6 to 8 hours to fully charge my 4 - 12.8v 200ah batteries

Intelligent Power Queen charger does the trick. It can sense battery condition and selectively apply the voltage and current necessary to safely charge the battery. Just like old school chargers, when a battery is very dead. The more current and voltage it will draw in taking a charge. If your battery is just a little down, it will not require the maximum to charge the battery. The cables get a little warm, but nothing excessive.I highly recommend the charger for these batteries. I own one and the batteries and am very pleased with them.

It is about a week now since we have added this to our system and so far it is going really really well.One important thing y'all shall know is that the charging current is constant at around 40 Amps , which makes the battery bank charge really fast: in our case a 4 x 12v / 100Ah ADCBATT (totally workhorses for the solar power system!!!) . Average takes about 7 hrs to fill these babies up to the constant floating charge of 14.6V.It is an awesome buy, and highly recommend it for any Lithium LiFePO4 batteries!!!

I like everything about this thing, it works great so far.

Nicely packed and works well. Charges at 39.2 amps fairly quiet and shuts off at full charge voltage..

I have only used it to charge my new 300 amp hour battery and it was pumping 38 amps for 5 hours, the wires did heat up but the charger kept cool ( it is fan cooled): The charger output and battery input wires are going to require monitoring. Overall it did charge the battery and the display seemed accurate. I am using this in my rv and am reluctant to upgrade my converter over wire size issues.

This charger works very well. charges my 200 AH battery to 100%. Charges fast and fully automatic. I recommend this product.

Wish it came with alligator clamps.