H6 battery is the replacement for the fit on the TLC ??

[D-mac]

While we are talking about batteries, I am going to leave my 2025 TLC for about 6 months in my garage in Colorado. It will probably get down to about 35 degrees in the garage occasionally. I will leave the 12 volt on a battery tender. Any suggestions about the hybrid battery?

The Toyota engineers have frequently pointed out that they chose lower performance NiMH main batteries for the US market hybrid LC250 instead of the more common and higher performance lithium-ion batteries, because of durability in extreme conditions. I would be confident that normal vehicle storage procedures would be OK. You could look up the Prius community's experience that has been using these types of Toyota hybrid batteries for 25+ years for more insight.

 

[D-mac]

I am considering either a sodium ion or solid state replacement in the future. (There are limited options now, but I'm waiting a bit). These don't have the temperature charging issue of LiFePo4. Sodium ion provides about the same amp hour rating, but, unlike AGM can be completely drained without doing damage. Solid state is an open field I really think this is the future of high performance battery tech.

-Curtiss

The lithium battery makers also point out that their batteries can be deeply discharged and always give full rated output while discharging. Recent models have similar temp range as AGM and can self protect, which is probably why Optima has started marketing their Orangetop towards the off road community. More new tech sounds exciting though , we may be in the final years of lead acid batteries

 

[ultane]

….we may be in the final years of lead acid batteries

 

[basicxj]

I will confess that I did look into Optima's Orange Top. $1285 Canadian. That's about where my research ended

 

[RideWithYanu]

I will confess that I did look into Optima's Orange Top. $1285 Canadian. That's about where my research ended

I don’t think you’d want the orange tops in a TJH250 anyway. Perhaps a good option for one of the non-hybrids (TJA, GDJ, or TRJ250), but since the 12v battery doesn’t crank the engine in our TJH’s the major value proposition of the orange top (high amp cranking power and a built-in jump start) is unusable in our trucks.

 

[basicxj]

I don’t think you’d want the orange tops in a TJH250 anyway. Perhaps a good option for one of the non-hybrids (TJA, GDJ, or TRJ250), but since the 12v battery doesn’t crank the engine in our TJH’s the major value proposition of the orange top (high amp cranking power and a built-in jump start) is unusable in our trucks.

Not wanting one for the Land Cruiser was exactly the conclusion I came to upon seeing the MSRP

As an aside, if the 12V battery is discharged to the point it won't light up the ECU, I believe opening and closing the fuel door (provided there is enough juice remaining to do so) will force a start with the actual starter rather than the traction battery if you were to use the built-in jump start feature in the Orange Top.

 

[jawkdna]

I replaced my stock 12v (produced in March of 2026) on my 2027 that I have owned for 3 months and it has died about 5 times....
Went with Odyssey H6 AGM, replacing the battery is easy, but not quick, getting they cage/hold down out adds a few minutes.

 

[D-mac]

I don’t think you’d want the orange tops in a TJH250 anyway. Perhaps a good option for one of the non-hybrids (TJA, GDJ, or TRJ250), but since the 12v battery doesn’t crank the engine in our TJH’s the major value proposition of the orange top (high amp cranking power and a built-in jump start) is unusable in our trucks.

According to their mfgs, lithium ion phosphate batteries like the Orangetop even with relatively low amp hour ratings will offer longer life than lead acid based batteries because they can be deeply discharged and quickly recharged without issue. Exotics and sports cars can suffer similar battery problems that LC250s and other 4x4s ave with more frequent deep discharges and have had success with these types of batteries because they can eliminate need for constant trickle charge/tendering (plus they save weight).