Has anyone tried running a lithium battery under the hood in their 2025+?

[Largefarrva]

Just wondering if anyone has changed out their agm (main and aux…or just main) battery under the hood in their 2025 or 2026 with a lithium battery.

 

[boogielander]

thought about doing that on a 2022 e-torque but ultimate didn't. had to pass up on the sponsorship opportunity due to voltage with e-torque.

what is your running voltage on the 25/ 26? if it's over 14v constant then you'll be fine with a LiFEPO4. if not then it is not recommended because LiFEPO4 is best charged at 14.4v

 

[Largefarrva]

thought about doing that on a 2022 e-torque but ultimate didn't. had to pass up on the sponsorship opportunity due to voltage with e-torque.

what is your running voltage on the 25/ 26? if it's over 14v constant then you'll be fine with a LiFEPO4. if not then it is not recommended because LiFEPO4 is best charged at 14.4v

So far it’s usually in the 13’s. The only time it would be 14-14.5v is after starting the truck and the charging system senses that the agm needs to be boosted due to the high discharge from starting.

A few weeks ago I had a Titan8 LTO lithium battery installed for my stereo system. So now my charging voltage tends to be in the low 13’s because the lithium battery is keeping the agm pretty much topped off all the time. If the truck sits for a day or two it’ll charge at 14-14.2v for a while but then it drifts back down to the low 13’s.

So I am going to replace the Titan8 with a battery bank I built myself made out of 20Ah LTO cells because the Titan8 is unreliable (very cheaply made).

So I was considering replacing the agm batteries under the hood since they are so much better than agm and with all these issues being reported with trucks draining down over night.

My concern is how the charging system will work with either LTO or lifepo4 lithium. So I was wondering if anyone has made the switch.

 

[boogielander]

i see. i ran LiFEPO4 on my 5th gen 4Runner before for about half a year or so and didn't get any problem, but then that was one with less CANBUS than our trucks and less computer intensive rig.

 

[LouNY]

I have a Lithium battery in my side x side. It works great in the summer, late spring and early fall. It pure dee sucks in the winter time. I have to use my boost pak when it's cold out. The cold Lithium will not crank it over. When it's very cool if I turn the lights on for a minute or two then try the starter it may crank over if not after a couple of tries warm up the battery it will work.

 

[boogielander]

I have a Lithium battery in my side x side. It works great in the summer, late spring and early fall. It pure dee sucks in the winter time. I have to use my boost pak when it's cold out. The cold Lithium will not crank it over. When it's very cool if I turn the lights on for a minute or two then try the starter it may crank over if not after a couple of tries warm up the battery it will work.

they need blankets, or see if they have self-heating ones.
If i move to somewhere that is really cold then I'll have to swap the LiFEPO4 in the bed (that powers my camper lights, run my laptop and diesel heater) to a self-heating unit.