JDIAG BM280 Digital Battery Gauge — 12V-72V Battery Monitor for Golf Carts, EZGO, Club Car, Cars & RVs

Introducing the JDIAG BM280 Digital Battery Gauge, a compact, waterproof monitor engineered to track 12V–72V battery systems with precision. Whether you drive a golf cart, a car, or a RV, this gauge provides at-a-glance visibility into remaining power and live voltage, helping you plan your next charge with confidence rather than guesswork.

Designed for real world use, the BM280 combines a backlit high definition LCD with clear color cues. Red indicates capacity percentage and green shows the real time voltage, so you can interpret the readout at a glance even in bright sun or dark compartments.

Key benefits at a glance

• Accurate Battery Voltage Monitoring and remaining capacity tracking to prevent surprises on the road or trail.
• Wide-Range Compatibility from 12V up to 72V including lithium packs, ideal for golf carts, EZGO accessories, clubs, forklifts, and more.
• Clear Display and One-Button Operation with short press to toggle readouts and long press to calibrate voltage range.
• Simple Plug-and-Play Installation with two mounting options and key-switch compatibility for immediate activation.
• Safe and Durable Build with reverse polarity protection, IP65 waterproofing, overvoltage protection, heat resistance, and a PVC screen protector.

Practical use cases

In daily use you can monitor battery health before a weekend trip, check live voltage during charging, and verify remaining capacity before long drives in your golf cart, car, or RV. The device supports both lithium and lead-acid batteries, simplifying adoption across fleets.

What to expect on the road or site

• Rugged outdoor readiness helps the gauge perform in exposed environments and hot or cold weather.
• Low-power auto-sleep mode conserves the host battery when idle.
• High-contrast visuals and backlighting improve readability under sun glare or dim light.

Note that results depend on installation accuracy and battery type. Follow the included guidelines to ensure optimal performance and compatibility with your equipment.