100A MPPT Solar Charge Controller 12V 24V 36V 48V LCD Display Battery Intelligent Regulator Max 100V Input Dual USB for Lead-Acid/Lithium (100A)

For the price. You cannot go wrong. I had rated this item lower. But after realizing this charger is compatible with 12 to 48 volt batteries, I had to change my rating. The more expensive controllers aren't as compatible. DIY perfect. Specially on a budget. It works for the ranges listed. I went from 12v to 48v system with this controller. No issues. Found out the hard way when I tried to do the same with a more expensive controller and they just don't have the compatibility. That controller is a paper weight now. This controller saved my day.

2 of the 4 arrived in horrible nonworking condition. One does everything but transfer power. The other does nothing at all. I purposely bought these because of previous reviews. 2 work well 2 totally wasted my money and do nothing to charge. One has a decent display but won't charge the other arrived and wouldn't even light up. Cheap junk at best

My old charge controller was a 20 amp unit that would decide when it would or would not work. the new charge controller now gives me options to upgrade and has been working perfectly

Got 100A model, 4 stars only because the clock is a joke it will not be accurate for more than a day. The device has capacity for wire 6 awg for sure, I will be using 40+ A soon right now 30A 24V working good, wire 8 awg. The display has a changing display and having V, A, W and Temperature is great, without having to press buttons as others is very good design. I got this one after trying to work with other brands that claim 100A, none of them worked at 30A ,they only fit 10 awg, for 100A that is far from true. They all overheated at 30A, and the LiFePO4 where impossible to set, they all tried to trickle charge or something, that did not worked, all the manuals you know are not very easy to use. But I have to say if you want one that works at more than 25A this is it. The MPPT is somewhat an approximation and the efficiency is not that good, I will continue to do testing to improve efficiency as I have 8 LiFePO4 12.8V 100AH batteries (really 13.3V when full), set in series (2) parallel (4)

Excellent Charge Controller for the price.

This model is large enough for my panel array, it's my first mppt controller to see what the buzz is about. I hope for better harvesting of solar power off grid.

Ok I don’t mind these for what I am doing. A pain in the butt to program. No Instructions manual came with two different controllers which made it hard. They are in china and you can there support. No direct communications. Don’t use these on large systems.

It does not charge my batteries even if it’s left for a very long time to charge, it won’t charge. It’s a waste of money and I bought two of them and regret going for these cheap charge controllers