Review on 🔋 LIVISN Battery Charge Controller Protection Switch: 6V-60V Battery Protection Board for Lead Acid & Lithium Battery by Kurt Manning

Does what it's supposed to do, what I really didn't like is that it needs battery power to turn it on. The problem is that you cannot charge your battery if it is completely empty. The only way to charge it is to connect the AC adapter on the battery side and essentially disconnect the battery to turn on the charge controller. It would be nice if the charge controller could work with current from the mains and from the battery side, I will not buy this again.