Coulomb Meter BM703
CHECK !!
GSP BM703 is a high-precision current battery capacity tester (aka watt-hour meter) that tests the battery's voltage, current, and capacity to help users easily check battery status. GSP BM703 has memory function, low voltage capacity alarm function, and is suitable for mobile devices,
Can be used on portable equipment, electric bicycles, electric scooters, electric sweeper equipment, UPS devices, etc.
Scope of use
GSP BM703 is a product that can be used for lithium ion, lithium iron phosphate, lead acid, and nickel hydride batteries with a voltage range of 10V to 120V.
Parameter | Min | Type | Max | Unit |
Working Voltage | 8.0 | 50.0 | 80.0 | V |
Working dissipation |
| 10.0 | 12.0 | mA |
Standby dissipation |
| 0.5 | 0.8 | mA |
Sleep dissipation |
| 50 | 60 | uA |
Voltage accuracy |
| ±1.0 |
| % |
Current accuracy |
| ±1.0 |
| % |
Capacity accuracy |
| ±1.0 |
| % |
Backlight on current(50A) | 30 | 40.0 | 60 | mA |
Backlight on current(>50A) | 80 | 30.0 | 120 | mA |
Preset capacity value | 0.1 |
| 9999.9 | Ah |
Current of 50A sampler | 0.0 | 50.0 | 75.0 | A |
Current of 100A sampler | 0.0 | 100.0 | 150.0 | A |
Current of 350A sampler | 0.0 | 350.0 | 500.0 | A |
Current of 500A sampler | 0.0 | 500.0 | 750.0 | A |
Temperature range | 0 | 20 | 35 | ℃ |
Weight | 20 | g | ||
Size(L X W X H) | 66 X 40 X 13 | mm |
L : length / W : Width / H : height
If you need further information. please contact to us.

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