This is my second charge controller from LiTime. The first one is the 30A and it works great.
This one is hooked up to four new LiTime 100 Ah batteries and 515 watts of solar (panels connected in series). Even after weeks of constant Arizona sunlight with over 400 watts coming into the controller, with no load, it will not fully charge the batteries. I hooked it up to just one of the batteries and it will not fully charge it.
Without the Bluetooth app it is difficult to change the settings. Why can't we plug in an external Bluetooth module? The user manual offers little information, such as error codes, or what the difference is between "keep" and "full" (it has never reached full with my batteries). The cooling fan is loud and constantly comes on, even on cold days.
I wish I would have bought the 60A with Bluetooth. It seems to offer more and charge better.
I have bought many batteries from LiTime but am disappointed with this charge controller.