Thread: 200Ah LiFePo4 Auxiliary System

Originally Posted by ndrew

Mate, thanks for sharing that — you’ve done exactly what I’ve been thinking about doing. My Optima Yellow Tops are leaving me a little bit unimpressed right now — not holding voltage and the reseller isn’t interested in backing the product.

Do you have any extra photos that show how the batteries are secured? I’ve got Front Runner drawers in the back of my D3 and there’s options for mounting where the third row seats are (if I remove them permanently, which I think I’ll do anyway), or in the space directly behind the second row. I’m keen to see how I can best secure them back there safely.

Cheers,

— Andrew

Hi Andrew. Couldn’t get any good photos. Too tight. This is the battery tray used (OEX ACX0663 UNIVERSAL LARGE METAL BATTERY TRAY) if the battery is wider than the tray it won’t fit behind the second row seats. The tray was either screwed or bolted through the floor. Will have a look underneath tomorrow. The battery hold down is PROJECTA BHD18M UNIVERSAL BATTERY HOLD DOWN TRAY CLAMP 160mm to 175mm CLAMPS KIT.

My battery dimensions are Length 328mm, Width 171mm, Height 215mm. Length and height can be larger but not much wiggle room for the width to fit behind the second row seats.

One key thing you need to understand about LifePO4 is they don't like heat. So an under bonnet setup is not a healthy spot for them. That in our experience is the only drawback as they are definitely the best aux battery we have used. They recover really fast using solar panels and can handle deep discharge cycles without blinking

Rob