A battery management system overrides the alternator’s voltage regulator and increases voltage at the batteries.
There are several brands available and I generally recommend and fit the Adverc system – they’re well made, simple and ultra reliable.
Fitting a battery management system can significantly increase alternator output charging batteries quicker and to a higher state of charge. Some battery manufacturers recommend a higher charging voltage (such as Rolls, Multicell, Trojan, US Batteries, Crown etc.). The Adverc can be adjusted to this specified voltage.
If the owner is fairly practical it’s also possible to adjust the Adverc to perform an equilisation charge which can be useful.
If you think you have a problem with a Battery Management system or a charging problem on a narrowboat I’m happy to help.
**At the moment I have a 2nd hand Adverc system available with a 1 year warranty.**