This article on the importance of the scheme of interconnection of batteries:
SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank
had some things in it which were quite surprising to me. That the current
drawn from individual batteries in a big bank can be so hugely different based on slight differences in how they are interconnected.
I am this weekend in Cowes on my boat installing my new Trojan batteries. Bright sunshine and cold! The sea is calm so I might blast across the Solent in the dinghy
to see my new mooring
in the Hamble
My house battery
bank was actually two banks of four batteries each in two different places a good 20 feet away from each other.
The former individual banks are in fact wired up the way it is recommended in the article, but obviously there is no good balance -- in the way the article talks about it -- between the two former banks. The forward former bank has bow thruster, windlass
, and four electric
winches connected to it. The aft former bank has all the house loads. They are interconnected so that I can use the whole capacity of both banks. I guess, if the article is correct, that there will be a very large imbalance between the two former banks, with respect to any particular load, but probably they will both stay in balance inside themselves -- I mean among the four batteries of which each one consists. I guess that should be ok, but I'm still trying to digest the significance of this article. I would be interested to know what anyone else thinks.