The conclusion is simple.
Bow thruster battery charging.
Sorry to be late on this thread but the bow thruster must be on the starter battery unless it has its own battery on a separate circuit with a charge splitter.
Don t put thrusters on the house battery especially don t do so when using bms protected lithium for the house battery.
This charges the bt battery at about 4 amps once the main batteries are topped up.
We strongly advise the use of a float charger during winter storage.
Is there an easy way to check this out.
A starter battery can take a short heavy load called cca cold cranking amps but a domestic battery is designed to take a long deep discharge at a lower amperage but over several.
My bow thruster battery is connected to the main bank by an adverc 12 12 battery charger.
The bow thruster can be run for a maximum of three minutes in any hour.
I ve seen this matter of re charging bow thruster batteries handled several ways.
Battery state of charge soc the second lesson concerns a typical marine topic.
Vetus offers 2 different types of marine battery series with its own characteristics.
Since then the trollbridge chargers for 24 volt equipment have been introduced that can handle winches and bow thrusters up to 15 horsepower.
Bow and or stern thrusters and their batteries.
This article was written for a 12 volt winch or bow thruster.
What about the charger for these batteries.
Has worked well for many years and now a windlass is connected to the bt as i can t see both being used at the same time unless i grow an extra pair of arms.
The main reasons for that.
I can t find one anywhere close to the batteries and i m wondering if maybe there is a problem with the battery charger that serves these batteries.
During the boating season the batteries are able to supply both small constant loads as well as heavy but short loads for the use of a bow thruster.
The bow thruster will be used probably for up to two minutes for maneuvering at the start and end of each trip.