question

pjetbarn avatar image

Wiring 3 parallel batteries with IP22 w/3 outputs

Hi,

I have a smaller motorboat with 3 parallel batteries. 1 starter and 2 consumer batteries.
I have bought an IP22 Blue Smart with 3 outputs, and I wonder how to connect them to the charger correctly.

I have made an figure of how I suppose is the correct way, but I am unsure if it really is that simple?
Should I add fuses on any of the wires?

Thanks a lot in advance for your support.

BR - Pjet Barn

charging batteryBlue Smart Chargerwiringip22
2 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

4 Answers
Kevin Windrem avatar image
Kevin Windrem answered ·

Make sure the fuses are as close to the battery as possible. They are there to protect the wiring from a short. The charger will current limit if shorted but the current from the batteries could easily burn wiring.

2 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Margreet Leeftink (Victron Energy Staff) avatar image
Margreet Leeftink (Victron Energy Staff) answered ·

Schematic look sgood, indeed, Kevin's remark is correct, move the fuses closer to the battery.

2 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Margreet Leeftink (Victron Energy Staff) avatar image
Margreet Leeftink (Victron Energy Staff) answered ·

Hi, Yes that is the correct way to wire the batteries to the charger. You will need to add fuses to each positive battery cable.

2 comments
2 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Thanks a lot Margreet!

I have added fuses on my figure, just for easy overview and understanding.
I suppose the figure is showing the correct wiring now?

What diameter wire do you recommend? It is a 15 Amp charger and all 3 batteries are 75Ah.

Thanks

BR,
Pjet Barn


Thanks a lot Margreet!

I have added fuses on my figure, just for easy overview and understanding.
I suppose the figure is showing the correct wiring now?

What diameter wire do you recommend? It is a 15 Amp charger and all 3 batteries are 75Ah.

Thanks

BR,
Pjet Barn


pjetbarn avatar image
pjetbarn answered ·

Thanks a lot! @Margreet Leeftink (Victron Energy Staff) @Kevin Windrem
Highly appreciated!

I have updated the figure accordingly:


victron-blue-smart-ip22-wiring.jpg

Cheers,
Pjet


2 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.