The Masterlink BTM-III battery monitor provides an accurate indication of the current, amperage, remaining time and remaining capacity of a primary battery bank. It will also display the current and estimated capacity of a second or third battery bank on board. The battery monitor has a built-in microprocessor which calculates the remaining capacity and stores historic data.

General specifications

Number of battery outlets: 3 (service, starter & bow thruster)

Display/read-out: voltage, current, Amp-hours, time remaining, battery capacity in %voltage, current, amp-hours, time remaining, battery capacity in %, special battery status events

Languages on display: English, Dutch, French, Spanish, German, Danish, Finnish, Norwegian, Italian, Swedish

Built-in depth: 40 mm, incl. cover and cable: 55 mm (1.6 inch)

Dimensions, hxwxd: 65 x 120 x 40 mm (2.6 x 4.7 x 1.6 inch)

Dimensions shunt, hxwxd: 84 x 44 x 44 mm (3.3 x 1.7 x 1.7 inch)

Weight: 0.25 kg (0.6 lb)

Technical specifications

Max. Ah capacity: 9999 Ah

Supply voltage: 8-50 V

Voltage range: 7-35 V

Current consumption (backlight off): 28 mA/12 V, 16 mA/24 V

Current consumption (backlight on): 100 mA/12 V, 50 mA/24 V

Voltage resolution: 0.01 V

Voltage accuracy: ± 0.6 %

Shunt specification: 500 A/50 mV (service set)

Current measurement range: 0-500 A (optional 1000 A)

Current accuracy: ± 0,8 %

Battery alarm contact: yes, open collector

Remaining time indication: yes

Historical data: yes

MasterBus compatible: no

Connection cable (6-wire) necessary: no

Modular cable necessary: no