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Battery to Battery installation

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Battery to Battery installation  Empty Battery to Battery installation

Post by Johnuready Fri Sep 03, 2021 9:41 pm

Anybody fitted a battery to battery charger between the engine and leisure battery. Is there a cable route from the leisure battery in front of the passenger seat to the leisure battery?
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Post by gpilky Sat Sep 04, 2021 8:34 am

I'm interested in this question too...... what model of Broadway do you have?

What I've learned from the Fiat Convertors Manual (2017) there seems to be a cable that runs from a fuse on the battery, under the floor behind the seats to the pillar on the drivers side. This is limited to 50A.

My assumption is that to get more than 50A to a B2B then you would need to run a new cable from the battery, however, 50A may be sufficient for your needs?
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Post by jennyandpeter Sat Sep 04, 2021 3:50 pm

I fitted a voltronic standby battery charger, same as a battery master but half the price.
The reason we went this way rather than a dual solar charger is that is will charge the vehicle battery while on mains without switching the 12v on in the winter. 
Rather straight forward a wire goes from each battery through a 10a fuse to the charger and it trickle charges the vehicle battery once the hab battery is near full.
The cable run in ours is easy, mostly hidden under the carpet.
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Battery to Battery installation  Empty Re: Battery to Battery installation

Post by Johnuready Mon Sep 06, 2021 7:38 pm

J
gpilky wrote:I'm interested in this question too...... what model of Broadway do you have?

What I've learned from the Fiat Convertors Manual (2017) there seems to be a cable that runs from a fuse on the battery, under the floor behind the seats to the pillar on the drivers side. This is limited to 50A.

My assumption is that to get more than 50A to a B2B then you would need to run a new cable from the battery, however, 50A may be sufficient for your needs?
We have 2011 Autosleeper Broadway EK.

I have just installed a lithium battery and a Victron B 2 B it rated at 30 amp.

I can get from the Liesure battery across to the other seat with a small piece of trunking. Come out of the behind the drivers seat. Would like to hide the cables for the last run across the walk way and into the battery compartment. 

I have the cables being delivered soon, will have go then.
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Battery to Battery installation  Empty Re: Battery to Battery installation

Post by Molly3 Sat Sep 18, 2021 8:30 pm

I was told buy a  knoligable person that the problem fitting a BTB on my nuevo is the sargent 328, it  controls the  LB charging ,fitting a BTB then you could have 2 charge systems  at the same time  causing a loop that could flatten the LB ,if you cut out the sargent charger you would loose power to the fridge and step.  any comment from our experts ?.
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Post by Roopert Sat Sep 18, 2021 9:54 pm

I can't think of a reason why you would have the B2B charger and the power supply in the EC328 running at the same time. Why would you do that?
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Post by Molly3 Sat Sep 18, 2021 10:19 pm

Roopert wrote:I can't think of a reason why you would have the B2B charger and the power supply in the EC328 running at the same time. Why would you do that?
How would you stop it , LB is charged via sargent when running  engine , adding a BtB would add a second charge system running at the same time ,not when charging from 240 power ,
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Post by Roopert Sat Sep 18, 2021 10:40 pm

The Sargent charger/power supply operates only from 240V. Unless you are on EHU while the engine is running, the Sargent charger won't be doing anything. Even if you did have 2 power supplies running at the same time (e.g. accidentally starting the engine while on hookup) it should cause no harm.

[Edit - perhaps you are thinking of the split charge circuit, as discussed in another thread? You can't allow both the split charge circuit and the B2B to operate at the same time - for obvious reasons.]
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Post by Molly3 Sat Sep 18, 2021 11:05 pm

Time to stop digging  ,
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