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NASA Battery Battery Battery BM-2 Battery Monitor 12 V 200 A | 4Boats

NASA Battery Battery Battery BM-2 Battery Monitor 12 V 200 A | 4Boats

£118.80 £185.62-36%
£118.80 £185.62-36%
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About this product :

Compact BM-2 battery monitor for 12 V lead‑acid systems. Supplied with a precision 200 A, 50 mV shunt and a prefabricated cable for straightforward DIY installation and continuous battery performance monitoring.

  • Supply voltage 8–16 V DC
  • Supply current 1.5 mA
  • Battery capacities 5–999 Ah
  • Load/charge current measurable up to 199 A (shunt rated 200 A)
  • Shunt standard 50 mV @ 200 A
  • AMP. Cables supplied: 200 AMP shunt link to M8 Ring terminal and 5 Metre from display unit to battery
  • Monitors voltage, charge/discharge current, amp‑hours, state of charge and time to charge/discharge; resettable Ah counter and second starter battery input
  • Compact size 125 × 62 × 23 mm (4.92 × 2.44 × 0.91 in)

The BM-2 uses dual algorithms to provide accurate state‑of‑charge estimation and time‑to‑charge readings, helping to extend battery life and reduce the risk of failure on boats, RVs and off‑grid systems.

| Updated: 25th November 2025

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