- Sep 15, 2016
- 126
- 112
- Funster No
- 45,131
- MH
- 2015 Auto-Trail V600
- Exp
- 8 years motohoming and counting
I’ve finally got around to buying a Roamer 230AH smart4 seatbase LiFePo4 leisure battery to fit under the drivers seat of our 2015 Auto-Trail . The existing 2 AGM batteries are under a bench so we will free up some storage space. The van has a Sargent EC500 system. The existing battery wires are quite small gauge on a 20A fuse. Both positive & negative leads from the batteries connect into the Sargent unit and the negative is connected to the chassis. I have a Victron Orion XS50 dcdc charger, 75/10 MPPT solar controller and IP22 mains charger, plus a Renogy 2000w inverter. Now, Roamer advised I put a 300A terminal cube fuse on the battery and run 90mm2 cable to my positive busbar/ midi/mega fuses and same to the negative busbar & shunt. Mainly to avoid any voltage drop or ripple effect if hammering the inverter for extended periods between battery charge ups. My question is this… given that the AT negative cable to the chassis is probably 10mm2 at best, in order for the Orien XS50 to work properly, should I run a 90mm2 cable from my negative busbar to a new earth point on the chassis? Does it matter if the leisure battery is earthed to the chassis twice?
Also has anyone got any photos of their own seatbase battery set up? I’m thinking of isoloator switch & fuses at the front, shunt, neg busbar & shunt at the rear and mppt and mains charger down one side. All affixed to a 9mm ply frame around the battery. Thoughts?
Also has anyone got any photos of their own seatbase battery set up? I’m thinking of isoloator switch & fuses at the front, shunt, neg busbar & shunt at the rear and mppt and mains charger down one side. All affixed to a 9mm ply frame around the battery. Thoughts?
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