Wide operating voltage range The battery is designed to withstand the widest operating voltage range (DC 6 - 63 V). The 12 V 34 , 36 V , 48 V voltage can be adjusted according to the battery level. The test circuit does not require an additional power supply.Screen protector waterproof PVC waterproof case with 15.24 cm two ons. The function ons are from capacity, voltage and off. Select the display voltage battery alone or turn the volume percentage to pre the function on. The "Settings" on is for selecting battery specifications and so on.Clear and bright LCD display The battery delivers crisp, high-quality LCD display from every angle. Automatically enter sleep mode 10s to save power.Re polarity protection simply connects with re protection and will not if the connection is rely.Applicable battery type Battery is suitable for battery, lead acid battery such as ternary battery polymer battery ion battery, storage battery. Note that it cannot be d with the LI battery series in phosphate batteries 1 - 2 and the LI battery series in more than 15 batteries.Material:ABS plasticcolour:blackPackage Contents:2 x Dial LCD Battery Capacity 2 x CableOnly the above package content, other products are not included.Note: Light shooting and different displays may ca the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.