George Christian

OK OK, you are dealing with a 5volt engineer here, and a Soutie to boot, so go easy on me. I am on the forum to learn  and bitch a bit and in learning, make sure that I am not being screwed over by circus providers, sorry service providers..
So, its Surfix, not Surfex, or god forbid Norsk and not Norse, and its Flat Twin and earth and not Flex and earth.
 Anyway, the COC is happening next week and all shall be revealed.
Once its properly ours, a battery back up will follow in the form of a 48volt Hybrid, sans panels for a while, watch this space.

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"One guy wants to rip all the house wiring out and replace with Surfex"
^^^THIS. (Surfix/Norsk)

All done 
I haven't managed to do any real deep cycle or capacity tests but it has done well running the fridge freezing lots of water over long periods. I'm out of time before a trip so its going as is, and I may take the old battery (deep cycle under the hood) just in case.

Yip,  got that thank you. Strange that they are black.   It may look a bit wrong on the mock up but I am making the positive pole  close to where it shows. The cells will be connected in a circular fashion . Hopefully things will be clearer ( to all) after I get the case mostly built on the weekend.
 
 

Good day all,
Please advise on which section of the forum I should post this on.
I am making a second battery to fit in a very specific space in my vehicle.
Only 99% sure that it will all work out, but anyone who wants to come along for the ride is welcome.
Constructive criticism very welcome, and indeed I will be looking to others who may be able to assist with final testing and with some minor machining of the plastic casing parts. To those who just love the sound of their own voices please move on to another post.

4 x 105 AH cells
BMS from Overkill 120 AH
Engineering plastic from DEMS (Polypropylene)

Other parts we will make up as we go along and on advice
The battery will not be a very high performance model, although the cells can charge and discharge at 1C. I just run a fridge, night lights, charging for mobiles and a small 150 inverter for camera batteries.
Charging will be via one Victron dc dc 30 amp charger and, on a good a day 15 extra amps from the solar on the tent roof.

I believe that I can cram all this into a 280 x 110 x 200 package, so nice and neat. So no it's not meant to rival the fancy stuff but should give an honest 105AH and hopefully last forever on my non agressive charge discharge cycles.

Enjoy the ride.