Features: Battery Balancer: The battery balancer has an intelligent voltage compensation system to keep the battery in an idle state and automatically shut down when the voltage is insufficient to extend battery life. Function: The battery balancer 48V can be connect in series with the battery for a long time to maintain the charge and discharge balance between the batteries in series. LED Display: The battery balancer can display voltage through LED screen, and voice control display reduces energy consumption. Applicable Batteries: The battery balancer is suitable for lead-acid/lithium battery/nickel metal/lithium iron phosphate and other batteries, balanced voltage. Wide Applications: The battery balancer can be used in battery configurations such as car, boats, motorcycles, solar panel, etc. Specifications: Material: PCB, ABS Size: Approx. 12.4x2.7x6.2cm/4.88x1.06x2.44in Package Includes: 1x Battery Balancer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.