Boat projects I've done. Battery isolation panel

[thethomastwo]

Hey ya'll,

I haven't been on here consistently in a minute, so here is some of the things I've done to make my boat a little better for me. First off, a battery isolation panel. And 600ah of lithium tucked away in the sail locker. That panel is shaped kinda funky to fit on the space on the bulkhead above the fridge. Each breaker is rated for 200 amp (maximum discharge of each battery) and buss bars are 600 amp capable, so I am not worried about anything getting even slightly warm.

 

[Stewart]

Hey ya'll,

I haven't been on here consistently in a minute, so here is some of the things I've done to make my boat a little better for me. First off, a battery isolation panel. And 600ah of lithium tucked away in the sail locker. That panel is shaped kinda funky to fit on the space on the bulkhead above the fridge. Each breaker is rated for 200 amp (maximum discharge of each battery) and buss bars are 600 amp capable, so I am not worried about anything getting even slightly warm.

Lead acid for starting and DC-to-DC in between?

 

[thethomastwo]

Lead acid for starting and DC-to-DC in between?

There is an engine battery charge leg from the inverter.

 

[rewired]

Looks good!
Where did you get your breakers?
I need to do something similar (I had to disconnect my solar panels to safely remove my AGMs and I'm working on my battery compartment now).

Thanks!
Tony

 

[thethomastwo]

Looks good!
Where did you get your breakers?
I need to do something similar (I had to disconnect my solar panels to safely remove my AGMs and I'm working on my battery compartment now).

Thanks!
Tony

Hello Tony,

I got them from Amazon. You can also get them from West Marine.

 

[thethomastwo]

Here is a little update. I got all the parts never-siezed and tight, now to screw the panel in place and seal up the gap around the top. The battery panel is back from the machine shop and nearly assembled.

 

[rewired]

Hello Tony,

I got them from Amazon. You can also get them from West Marine.

Thanks!

 

[thethomastwo]

Update on the battery and isolation panels. After a bit of grunting and a few choice profanities the panels are in and getting tidied up. Two of the three batteries are mounted, and the wiring to the inverter is almost complete.

 

[rewired]

Looks great, John!
Please share a picture from the galley side of your isolation board when you have a chance.

I'm working on 400 ah of lithium in the quarter berth, but still have to work out a few things.

Tony

 

[john english]

Need to get some orientation on how everything is located.
What will charge 600 amps of Lithium?
I would not trust any circuit breaker for that amount of current.
Get some Class T fuses and relays as the fault current is way up there
(2X) EV Kilovac Czonka III EV200AAANA 500A Contactor 9 - 32Vdc Coil w/economizer

 

[thethomastwo]

Need to get some orientation on how everything is located.
What will charge 600 amps of Lithium?
I would not trust any circuit breaker for that amount of current.
Get some Class T fuses and relays as the fault current is way up there
(2X) EV Kilovac Czonka III EV200AAANA 500A Contactor 9 - 32Vdc Coil w/economizer

This is an isolation panel to take any one battery offline should I need to. The breakers themselves are rated for 200A, and the batteries have a max discharge of 200 amp, with a 100 continuous rating. Everything is designed for a "near dead short" capacity. I was gong to use fuses, but decided that would be one more thing I would have to keep track of should they fail.