BI-850 Explosion Proof Battery Indicator

The AMR BI-850, Explosion Proof Battery Indicator keeps watch on your expensive machine batteries. With our new “High Tech” design, the BI-850 will extend the life of your machine’s batteries, and reduce production downtime due to failing equipment. It is housed in a rugged XP enclosure, and is intended for machine mount.


  • Mechanical:
    • Enclosure – Brass (EXP)
    • Dimensions – 5.5″W x 4.75″H x 5″D
    • Weight – 5 lbs.
    • Mounting – Weld Plate, 5″ x 5.5″
  • Electrical:
    • Voltage Operation Range – 65 VDC to 140 VDC (128 VDC Unit)
    • Current Requirements – 24 mA (minimum)
    • Indicators – 100% charge down to 80% in 5% increments
  • Features:
    • MSHA-approved EXP Enclosure.
    • Smooth indication – Not just a voltage meter.
    • Easy to install: Mount the weld plate and connect the two wires.
    • Red LED begins to flash less than 80% capacity.
Certifications: MSHA
Backup Battery: No
Inputs: 2-wire, direct connection to Battery
Outputs: None
Display: 4 Green and 1 Red LED for battery level indication, 80-100%
Remote Monitoring: No
Other Notes: Machine Mountable with 5″ x 5.5″ Weld Plate