Very good item, and works good. Fast delivery. Thank you Seller.
Balancing operation ok, balanced 130Ah cells perfectly during one night. Manufacturing quality looks ok. But it never shuts off, the yellow LED always lights - draws battery. Therefore, it is safest to connect it through 4PST relay and only activate it when batteries are connected to charger. Or use ENABLE pad on the board (didn't check yet whether it functions and how much it draws when disabled).