Features: 1. Real-time monitoring: high precision real-time monitoring of battery voltage, current, capacity and other information 2. Power failure memory: power failure memory function ensures that battery data is not lost. 3. Applicable to a variety of battery specifications: compatible with lithium batteries, lithium iron phosphate, acid, nickel-metal hydride and other batteries Wide range of applications: suitable for mobile devices, electric vehicles, medical equipment and other scenarios Parameter: Product name: coulometer Power supply voltage: DC8-100V Working power consumption: 12MA, Max 20MA Standby power consumption: 0.5MA, Max 1MA Voltage acquisition accuracy: ± 1% Current acquisition accuracy: ±1% Capacity acquisition accuracy: ±1% Capacity Setting Value: 1-999AH 300A sampler current:300A Use of ambient temperature: -10 ~ +60 ° C Applicable battery specifications: lithium batteries, lithium iron phosphate batteries, acid batteries, nickel-metal hydride batteries and other battery packs Appearance size: diameter: 54.46mm, thickness: 17.8mm Hole Size: Diameter: 54.46mm Color: black Material: ABS Package Contents: 1 x Coulombmeter 1 x Sampler 1 x Shielded Wire 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.