luckybeanz
Well-Known Member
The other day I was having trouble starting my engine, when set to just the engine bat, it would not get enough juice to turn over, switching to the house and the engine (1+2) I managed to start the engine. So I figured the battery for the engine was a bit did, and decided to replace it.
The old bat was is a victron energy gel, I chose to go for a cheaper option and installed a Tab Plus with greater amp output but not such long life. I connected every thing up and tried to start the engine, but it sounded even deader than before. And when i tried both bats (1+2) it would not start either and actually drained all the batteries really quickly. This lead me to the discovery that my battery bank is wired to my shore power charger (Whisper Power) in an crossed manner.

The charger

Batteries connected.
From the manual
My batteries are connected with the two large gel in parallel (labeled I and II - these are the house bats) then the third on its own labeled III. They are connected to the charger as I, II and III, though this means that the two in parallel are on Bank 1 and Bank 2 on the charger and Bank 3 is the engine bat. Surely this should be Bank 1 - connected to Bat III as engine bat on its own and then Bank 2 and Bank 3 to the parallel batteries?
I am actually wondering if Bank 3 needs to be connected at all? If it is charging a battery bank the bank should be able to have more than one battery in it. The manual also states:
Since my house batteries are connected in parallel, should I not just be able to connect them to the WP charger on Bank 1 and then connect the Engine Bat on Bank 2. With the current set up since Bat II (house) and Bat III (engine) are connected on banks 2 and 3 it is only able to use one bat type setting e.g. Gel/AGM/Flooded.
I am making the assumption that because the batteries are of different types Gel and Flooded this is what is causing the batteries to not be able to give the correct power to the engine and causing the batteries to run flat?
Has anyone else used the WP-BC-Supreme who can comment on mixed battery setup?
The old bat was is a victron energy gel, I chose to go for a cheaper option and installed a Tab Plus with greater amp output but not such long life. I connected every thing up and tried to start the engine, but it sounded even deader than before. And when i tried both bats (1+2) it would not start either and actually drained all the batteries really quickly. This lead me to the discovery that my battery bank is wired to my shore power charger (Whisper Power) in an crossed manner.

The charger

Batteries connected.
From the manual
- Bank 1 is separate from Bank 2 & 3 and will be charged
separately during bulk and absorption stages.
- Bank 2 & 3 are charged together and are connected in
parallel internally (with a separation diode). Only one
setting is required for Bank 2 & 3.
My batteries are connected with the two large gel in parallel (labeled I and II - these are the house bats) then the third on its own labeled III. They are connected to the charger as I, II and III, though this means that the two in parallel are on Bank 1 and Bank 2 on the charger and Bank 3 is the engine bat. Surely this should be Bank 1 - connected to Bat III as engine bat on its own and then Bank 2 and Bank 3 to the parallel batteries?
I am actually wondering if Bank 3 needs to be connected at all? If it is charging a battery bank the bank should be able to have more than one battery in it. The manual also states:
The charger will charge Bank 1 to float stage first before it
charges Banks 2 & 3 (see more on Section 5 ‘Understanding
the Charging Mechanism’). Bank 1 on the charger is highly
recommended to be connected to the main battery bank for first
priority charging and Banks 2 & 3 on the charger to be connected
to the other battery banks with lower priority (such as
jump-start battery bank and/or AC generator battery bank used
in marine application).
Since my house batteries are connected in parallel, should I not just be able to connect them to the WP charger on Bank 1 and then connect the Engine Bat on Bank 2. With the current set up since Bat II (house) and Bat III (engine) are connected on banks 2 and 3 it is only able to use one bat type setting e.g. Gel/AGM/Flooded.
I am making the assumption that because the batteries are of different types Gel and Flooded this is what is causing the batteries to not be able to give the correct power to the engine and causing the batteries to run flat?
Has anyone else used the WP-BC-Supreme who can comment on mixed battery setup?