This was purchased but never fitted and I have lost the shunt so a new shunt would be needed. There are several currently advertised on eBay for just under and just over £20.00. The NASA BM1 Compact Battery Monitor is a display unit designed to monitor battery health in boats. Manufactured by NASA in the United Kingdom, this compact battery monitor features a user-friendly interface that allows users to easily track their battery levels and performance. IMPORTANT - will not be dispatched until 15/04/2026
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