High-Accuracy Shunt-Based Measurement for Lithium & Lead-Acid Batteries

The Powerwerx BSM-500 is a precision battery status monitor that acts like a fuel gauge for your battery bank. Using its integrated 500 A shunt, it measures current flow to calculate and display remaining capacity, amp hours, voltage, amps, and watts, as well as estimated charge/discharge time in hours and minutes. Operating between 8 and 80 VDC, it delivers ±1 % accuracy across voltage, current, and capacity readings. The unit mounts via a polycarbonate base and connects with a 9.8 ft (3 m) cable. Compatible with lithium iron phosphate, lithium, lead acid, AGM, and nickel metal hydride batteries, the BSM-500 is tailored for RVs, Sprinter Vans, Overland vehicles, auxiliary battery banks, and battery boxes. Module dimensions are 2.6 × 1.57 × 0.51 in; screen size is 1.25 × 0.9 in. It is backed by a one-year warranty.

• Fuel-Gauge Functionality: Acts like a fuel gauge, accurately measuring battery capacity, voltage, watts, and current consumption for instant status feedback.
• Wide-Range Specs: 8–80 VDC operating range; 0–500 A shunt; capacity tracking from 0.1 to 9 999 Ah; ±1 % accuracy.
• Durable Construction: Features a rugged polycarbonate base for secure, versatile mounting and long-term reliability.
• Versatile Applications: Suited for RVs, Sprinter Vans, Overland vehicles, auxiliary battery banks, battery boxes, and similar systems.
• Broad Compatibility: Works with Lithium Iron Phosphate, Lithium, Lead Acid, AGM, and Nickel Metal Hydride chemistries; quick setup with no software or apps required.