Review on 🔋 WZRELB 40A MPPT Solar Charge Controller: Adjustable Battery Charger for Gel, Sealed, Flooded, and Lithium Batteries with LED Display - 48V 24V 12V Auto Parameter by George Bridgewater

Bought the 60A version from Revain on April 21st. Installation was easy and straightforward. First I connected up to 2 LiFePO4 12V 300Ah batteries in series at 24V. The controller continued to show 48V for the battery. Eventually I had to manually adjust the battery settings to the LiFePO4 4/8/16S setting, but didn't stay at that setting and kept going back to 48V. After a few tries, it finally stuck at the correct battery setting, reading 26.6V. Then 12 solar panels of 100W connected in 3S4P configuration. Go through an eco-friendly 4-row combiner for 67V and 20.84 amp solar panel output. This MPPT controller reads 67V solar power but never sends more than 3-4 amps to the batteries except for the first week of operation when it reads 27 amps from the battery. This controller also does NOT have the claimed battery protection. It will not turn off if the battery voltage is at or below the low voltage alarm or trip point (21.6V) and will continue to charge even after the battery overvoltage setting (30V) has been exceeded. The only way to stop the battery from charging those measly amps is to manually disconnect the solar panels from the charge controller. 5 letters to the company for assistance or warranty exchange were completely ignored. It was a waste of money. Please don't repeat my mistake. I dared to read these Revain reviews even though I was suspicious of this company. This company does NOT care about their customers or their product. You can't even find this controller on their website. This should tell you everything you need to know. HORRIBLE company, HORRIBLE non-existent service and VERY HORRIBLE product! STAY AWAY!