![]() ![]() As batteries age their capacity changes, it is an ever moving target, so the 100Ah battery you bought three years ago may now only be a 75Ah battery. The biggest problem with traditional Ah or Coulomb counters is keeping them accurate with the batteries physical condition. When out cruising use absorption voltage.įACT: From the day you install your bank the physical Ah capacity is ever changing. If you have been at a dock at float voltage for multiple days then it is safe to assume you are full and a manual reset is fine. NOTE: Battery voltage should be at absorption level not a float voltage when performing a manual known-full reset. Net accepted current less than 1.5% of Ah capacity = ✓. ![]() Rule #1 for most tradittional Ah counters:ĭisable the “ auto-sync” feature and use manual “ known-full” re-sets. When not properly installed, and kept well calibrated, Ah counters can be horribly inaccurate… WHEN PROPERLY CALIBRATED – About 98% of Ah counters I come across are NOT properly calibrated/programmed. WHEN PROPERLY INSTALLED – About 90% of Ah Counters we come across are NOT properly installed & wired. When properly installed & properly calibrated they can extend the life of a battery bank. The battery monitor is a very useful tool for a boat-owner who has to survive on battery power. Purchasing recommended products from our affiliate partners.Helps keep content coming! We give you two excellent purchasing options below.īuy MHT Recommended Battery Monitors- Current Connectedīuy MHT Recommended Battery Monitors – Bay Marine Everything in this article is still relevant to the current series of BMV monitors. The 602 has been replaced by the BMV-7oo series. This article features the older Victron BMV-602. ![]()
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