This LCD display supports various batteries(Li-ion/LiFePo4/Lead-acid) supported voltage renge is 9V-100V, (12V/24V/36/72V/80V) can display battery capacity(Coulomb meter statistics, accurate capacity) current (Hall reads current) charge and discharge time battery persentage battery power Working voltage: 9-100v Current range: 100A Capacity range: 0-99999Ah Working current: 7.5mA The current after closed backlight: 3.5mA Voltage precision: 1%(1) Current precision: 1%(1) Capacity precision: 1%(1) Size: 79X43X27mm Cut hole size: 76.5X39.5mm LCD size: 49X24mm Backlight color: green Working temperature: -10-65 Wire length: 15cm Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: Black Material: ABS Package Contents: 1 * Hall Coulomb Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.