Originally Posted by tomkatb
Like the fancy Victron.
However, I bought the $35 one on Amazon. BM2. Installed last week.
Transmits your voltage to your phone. Installed in 10 minutes in my fuse panel. Cut the ends off and used a spare circuit. Easy.
Works perfectly. Keeps records of voltage. I do not need to read the amperage being used. Complicates the installation.
May complicate the installation but you have no record of what is probably the most important data from your battery. An accurate measurement of State Of Charge.
Sometimes the extra effort pays off in far larger rewards.
If all you want is voltage why bother installing another device. Just use the factory installed LED "Tree". It shows state of charge by voltage reading only. Of course it will tell you your batteries are charged long before they really are and actual state of charge on the batteries will vary greatly with the temp of the batteries.
Then again look at all the money you saved.