Only a few meet the requirements for marine installations. This eliminates the majority, if not all, of the low-cost options. In New Zealand, the only ones I've seen are Mastervolt, Victron, and the more expensive Juice models. There could be more now; I haven't kept up. The main difference between them and the others is that they must sound an alarm before the battery management system turns off for any reason. The less expensive ones have no output for this. The Mastervolt ones have an Ethernet output for connecting an Easyview5, for example, to sound an alarm, as well as a high / low voltag
