Lithium Titanate

We can always depend on Don to keep us current on RV batteries issues.

Thanks for watching for these. I am thinking heated LiFePO for the weight savings right now, but I won't do anything for a couple of years yet. My AGMs are still very good.

dieseltruckdriver wrote:
Thanks for watching for these. I am thinking heated LiFePO for the weight savings right now, but I won't do anything for a couple of years yet. My AGMs are still very good.

I'll be doing SiO2. At my age, they come with a lifetime guarantee, and they are 1/4 the price of the Titanate chemistry.

How about this ones
https://bigbattery.com/products/12v-170ah-lifepo4-power-block-rv-battery/

map40,

I need cold weather batteries. LiFePo4 are not useful in the cold.

pianotuna,

you might look at this
https://lionenergy.com/products/lion-safari-ut-1300#winter

How does LT perform in the cold? Always going to be more $$$ until they standardize production and have some in stock.

Lwiddis wrote:
We can always depend on Don to keep us current on RV batteries issues.

But ya know, I kinda like that. I’m pretty sure if we ever get thru that part of Saskatchewan we’ll be looking him up and inviting him to a rack of ribs and a bottle of wine. I’m fairly certain it will be an interesting dinner. :).

time2roll wrote:
How does LT perform in the cold? Always going to be more $$$ until they standardize production and have some in stock.

LT are good to -40 which is impressive. But at 1900 Cdn for 100 amp-hours.....

They are able to do 10000 cycles, so in the long run they would be slightly cheaper than SiO2. But--I'll not even have enough cycles left in ME to outlast 1500 cycles as a weekend warrior.

The LT have a lower storage density than LiFePo4.

BTW the company I was writing to has a 100 amp-hour LiFeP04 for $400 Canadian. Their store is at Lac La Biche Alberta. Which is one heck of a good price.

I did ask them about SiO2 and that seemed to fall on deaf ears.

Have you thought about building your own system? It's easy with a little research. LTO is an awkward cell to work with due to the nominal voltage of 2.4V. Setting up for a 12V nominal systems means a 12V or 14.4V pile. These are are weird voltages to charge and run appliances on, you'll need a programmable charger and probably a dc-dc converter. 24V nominal is workable but the easily sourced cell(Yinglang)is only 40 A-H. To get to 600a-h@24V, you'11 need a 10S16P pile, or 160 cells. At $43.5/cell bulk price on Aliexpress, that would be $6,960 for a roll-your-own system.

Assuming you originally wanted 600A-H@12v, you would have the same capacity with 300A-H@24V. Then the cost is $3,480.

The tough part is finding chargers and a BMS for the LTO cells. They're probably out there (never looked) but LiFePO4 equipment is so much easier to find.