Find a retailer

Century BM12V

Battery Monitor

Chargers and Accessories

The Century BM12V Battery Monitor is the easiest way to keep track of your battery’s state of charge and your vehicles starting and charging systems. The BM12V helps prevent vehicle breakdown by transmitting real time battery data to your smartphone.

Easy to set up push notifications will warn you about low battery voltage and record your battery’s daily voltage levels to help identify potential issues. The BM12V can be used to monitor conventional 12 Volt lead acid batteries and has been designed to withstand the most demanding environments.

Backed with a 24 month warranty*, the BM12V can be used with any application powered by a 12-volt lead-acid battery, including cars, 4x4s and SUVs, trucks, caravans, marine applications, motorcycles, lawn mowers and personal watercraft.

  • Compatible with all 12 Volt lead acid type batteries including flooded, AGM and Gel.
  • iOS & Android compatible - transmits real time data to your smartphone via Bluetooth.
  • The monitor has reverse polarity protection and an in-built resettable fuse for short-circuit protection.
  • Performance data sent to your compatible smartphone is stored for 31 days.
  • Notifications outlining ‘Low Battery Voltage’ & ‘Low Cranking Voltage’ are sent automatically and alerts can be tailored according to users requirements.
  • With a draw of only 1mA the monitor features an ultra low power consumption.
Find a retailer Find a retailer near you

Technical Specifications

  • Product ID
  • Input Voltage
  • Ultra-Low Power Consumption
    1 mA
  • Voltage Accuracy (9-16V)
  • Bluetooth Version
  • Bluetooth Range
    Up to 5m
  • App Name & Operating System
    BM12V, iOS or Android
  • Operating Temperature
    -40˚C to 90˚C
  • Physical Dimensions
    55 x 35 x 16mm
  • Cable Length
    172mm ±5mm
  • Weight (including packaging)
  • Warranty*
    24 month nationwide
*Conditions apply. Refer to the warranty section of the owner’s manual.


Battery recycling

Did you know that 98% of a lead acid battery can be reclaimed through recycling?

Battery Recycling Battery Recycling

This site, like many others uses cookies to function and make your experience better. Find out more about our use of cookies in our privacy policy here.