Feature:1. Multifunctional: This bluetooth battery monitor is multifunctional, with power, voltage, current, remaining capacity, charging and discharging, estimated charging and discharging time, and percentage of capacity, which can be seen at a glance through the clear display.2. Mobile Phone Bluetooth Monitoring: This battery monitor uses mobile phone bluetooth monitoring, barrier free maximum 10m bluetooth communication distance, according to the instruction manual to download and install the APP, after connecting through the self bluetooth, you can view all the relevant data on the APP and you can set up all the functions through the mobile phone APP.3. 1.8 Inch HD Colour LCD Screen: This battery voltage current meter features a 1.8 inch HD colour LCD screen with an optimised and upgraded interface with larger and clearer text.4. Silicone Buttons: The buttons of this battery voltage current meter are made of silicone material, which adds a comfortable touch to the fluidity and responsiveness of the operation.5. Wide Application: This smart battery monitor is widely used for 10100V, 0400A acid, lithium ion, NiMH batteries and other batteries, which are widely used for battery monitoring in RVs, automobiles, electric motorbikes, carts, boats and so on.Specification:Item Type: Battery MonitorMaterial: ABS, Stainless Steel, SiliconeScreen Size: 1.8 InchSampling Method: ShuntVoltage Testing Range: 10-100VVoltage Resolution: 0.01VCurrent Measurement Range: 0-400ACurrent Resolution: 0.01ACapacity Display Range: 0%-100%Power Measurement Range: 0-40KWPower Resolution: 0.01WAmpere-Hour Measurement Range: 0-9999AHCapacity Resolution: 0.1AHBluetooth Communication Distance: Up to 10 Meters UnimpededVoltage Accuracy: 1%+2 DigitsCurrent Accuracy: 1%+0.1AScreen Power Consumption: 0.75WScreen Off Time: 20 Seconds After Charging, On When I15ma, Off When I<15ma and >20s.Package List:1 x Display1 x Sampler1 x 3m Communication Cable1 x 1m Positive Pole Wire1 x Embedded Metal Bracket1 x Manual