LiFePO4 batteries for Hybrid Maverick use?

[AncientMan]

I use 200AH 48v LiFePO4 (Lithium Iron Phosphate). batteries in my home solar setup and they are rated for over 10,000 cycles.
Does anyone know if they would discharge fast enough for hybrid vehicle use? I’d never attempt to try to adapt one to my Maverick Hybrid myself (for safety, legal and warranty purposes) but curious if anyone has added battery capacity to their Maverick, and how it functions. My limited understanding of LiFePO4 suggests they might not discharge fast enough for practical use in a vehicle, but at around $2k for 200 watt hours it sure would be nice to add that much more battery capacity!

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[bbhaag]

It is doubtful that anyone with a Maverick has used this type of battery. Actually Ford just started delivering the first Mach-Es with this type of battery. This is the first Ford vehicle to ship from the factory with a LFP.

https://insideevs.com/news/681730/ford-mache-rwd-lfp-epa-rating/

 

[AncientMan]

I use 200AH 48v LiFePO4 (Lithium Iron Phosphate). batteries in my home solar setup and they are rated for over 10,000 cycles.
Does anyone know if they would discharge fast enough for hybrid vehicle use? I’d never attempt to try to adapt one to my Maverick Hybrid myself (for safety, legal and warranty purposes) but curious if anyone has added battery capacity to their Maverick, and how it functions. My limited understanding of LiFePO4 suggests they might not discharge fast enough for practical use in a vehicle, but at around $2k for 200 watt hours it sure would be nice to add that much more battery capacity!

Wow, that’s great! So if their 72 WH batteries will go 250 miles I’m guessing that a 200 WH battery could go over 700 miles. Very cool, maybe sometime in the future there will be a retrofit available…
My batteries weigh about 70 pounds each so it would be manageable in that regard.

 

[Darnon]

So if their 72 WH batteries will go 250 miles I’m guessing that a 200 WH battery could go over 700 miles.

Except a 200 kWh battery would be 1.5 tons in and of itself. All of that extra mass means the extra range isn't linear. The similarly equipped Silverado EV ends up weighing 4 tons to hit 450 miles.

 

[AncientMan]

Except a 200 kWh battery would be 1.5 tons in and of itself. All of that extra mass means the extra range isn't linear. The similarly equipped Silverado EV ends up weighing 4 tons to hit 450 miles.

My residential 200 kWh batteries (Lithium Iron Phosphate) weigh just over 70 pounds each. Probably would have to allow some extra weight for a liquid cooling system, but not likely to add much.

 

[Darnon]

My residential 200 kWh batteries (Lithium Iron Phosphate) weigh just over 70 pounds each. Probably would have to allow some extra weight for a liquid cooling system, but not likely to add much.

You're confusing watt-hours and kilowatt-hours (that's 1,000 watt-hours). A 50 lb LiFePo4 is about in the 2500 watt-hour range; that's 2.5 kWh. So you'd need 80 to equal 200 kilowatt-hours or 4,000 lbs.

 

[AncientMan]

You're confusing watt-hours and kilowatt-hours (that's 1,000 watt-hours). A 50 lb LiFePo4 is about in the 2500 watt-hour range; that's 2.5 kWh. So you'd need 80 to equal 200 kilowatt-hours or 4,000 lbs.

Lol yes I did confuse it, glad I lead with a reference to my inexperience with this subject.

 

[AncientMan]

You're confusing watt-hours and kilowatt-hours (that's 1,000 watt-hours). A 50 lb LiFePo4 is about in the 2500 watt-hour range; that's 2.5 kWh. So you'd need 80 to equal 200 kilowatt-hours or 4,000 lbs.

I didn’t even get the AH right, here’s a pic of one of my residential batteries, it’s 100 AH and 5120 WH so I was way off:

 

[Limeymav]

So could we use a lifepo4 in place of the 12v under the seat in place of the Flooded & AGM's

 

[The Real Maverick]

So could we use a lifepo4 in place of the 12v under the seat in place of the Flooded & AGM's

I think AGM is the way to go.

I just bought some large LiFePO4 batteries and while the resting voltage is about 13.8 V (A full volt higher than lead batteries) their charging voltage is not supposed to exceed 14.6 volts and I've seen the Maverick charge at as high as 15.4 volts.

Lithium also wants constant voltage charging. The charging system in the Maverick is not constant voltage.

Might work fine for years.
Might also catch fire on day one.

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