Re: BVI chart/nav app
Inverters on Conch can be all over the place. there are the CIG-lighter-12v versions....all the way up to 3000+ inverters. some can charge a phone, some can dry your girls hair and toast bread mix margaritas in the blender!
remember that when not used, inverters have VERY high parasitic loads, turn off when not needed.
running the engine, making sure the ALT is excited, will not cause you distress with the INV on. Leaving the INV on, and the engine OFF can cause all sorts of interesting discoveries.
Like...if you set an offset on your depth gauge...and it is "protected" by a 10 year old cr2013 battery, and your battery drop below 12v...bye bye offset...hello keel"