This waterproof coulomb meter is designed for RVs, marine, and EV conversions. It supports 8–120V systems and works with lithium, LiFePO4, and lead-acid batteries. The LCD backlit display shows real-time capacity, voltage, current, and percentage. Three shunt options (50A/100A/350A) ensure accurate monitoring for any application.
High-precision real-time battery monitoring
- ±1% accuracy for voltage, current, and capacity – provides a true battery state of charge indicator.
- The LCD backlit display shows four key parameters: battery percentage, charge/discharge current, voltage, and remaining capacity (Ah).
- Wide 8–120V operating range works as a universal battery level indicator for 12V, 24V, 36V, 48V systems.
- Compatible with lithium, LiFePO4, lead-acid, and other battery types – a true digital battery indicator for mixed fleets.
- One-button manual switching between parameters, offering an intuitive battery charge indicator experience.
Rugged design & ultra-low power consumption
- Rain-proof housing – ideal for marine, RV, and golf cart battery meter use in wet or dusty environments.
- Standby current below 10mA and sleep mode at only 50μA, preserving battery life as a low-power battery level meter.
- Wide operating temperature from -10°C to 60°C, suitable for various climates.
- Three shunt options (50A, 100A, 350A) cover 0-500A current range – works as a versatile battery capacity indicator for light to heavy loads.
- Full-brass and all-steel shunt construction ensures heat dissipation and long-term stability, maintaining ±1% current accuracy.
Applications
Battery level indicator is ideal for AGV robots, UPS backup systems, industrial sweepers, and electric forklifts. It also works for solar power banks, mobile medical equipment, and scissor lifts. Choose the 50A, 100A, or 350A shunt to match your current requirements.
AGV Robots
Industrial Sweepers
Solar Power Banks
UPS Backup Systems
| Model | SISCO-BI-TR16H-50 | SISCO-BI-TR16H-100 | SISCO-BI-TR16H-350 |
| Current Range | 0 – 75 A | 0 – 150 A | 0 – 500 A |
| Backlight Trigger Current | 50 mA | 100 mA | 100 mA |
| Shunt Dimensions | 47×41×13 mm | 56×25×30 mm | 66×37×35 mm |
| Weight (with shunt) | 200g | 270g | 410g |
| Display | LCD with yellow backlight | ||
| Operating Voltage | 8 – 120V | ||
| Voltage Accuracy | ±1% | ||
| Current Accuracy | ±1% | ||
| Capacity Accuracy | ±1% | ||
| Capacity Setting Range | 0.1 – 999.9 Ah | ||
| Operating Current | 10 – 12 mA | ||
| Standby Current | <10 mA | ||
| Sleep Current | 50 μA | ||
| Operating Temperature | -10℃ to 60℃ | ||
| Meter Dimensions | 59 × 20 mm | ||
| Compatible Battery Types | Lithium, LiFePO4, Lead-Acid, Ni-MH, Ni-Cd | ||
Dimension (unit: mm)
Q1: Can this battery monitor work with both lithium and lead-acid batteries?
A1: Yes, it is compatible with lithium, LiFePO4, lead-acid, Ni-MH, and many other battery types. The wide 8–120V operating voltage range also allows it to work on 12V, 24V, 36V, and 48V systems without any extra adapter.
Q2: How do I choose between the 50A, 100A, and 350A versions?
A2: Select based on your maximum expected current. The 50A version (0-75A) suits e-bikes and small devices; the 100A version (0-150A) suits e-mopeds and golf carts; the 350A version (0-500A) suits RVs, boats, and heavy-duty vehicles. Do not mix shunts across versions.
Q3: Does the display stay on all the time? Will it drain my battery?
A3: The display enters a low-power standby mode (<10mA) and can go into sleep mode (only 50μA) to preserve battery life. The backlight triggers only when current exceeds a set threshold (50mA for 50A shunt, 100mA for larger shunts), so idle power consumption is minimal.
Tips: How to get the most accurate capacity reading from this battery monitor?
- Before first use, manually enter your battery pack’s rated capacity (Ah) into the meter.
- Perform a full charge until the display shows 100%, then run a normal discharge cycle. This allows the coulomb counter to self-calibrate.
- Select the correct shunt for your max current (50A for 0-75A, 100A for 0-150A, 350A for 0-500A).
- Keep all connections tight and clean. Loose wires cause voltage drop and erratic readings.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
Shop on sisco.com for all of your industrial test and measurement equipment & accessories including portable detectors, meters, testers, scales, etc.
