li battery pack of my dreams

Half? I was thinking two of them ;)

I'm sure it's an amazing battery for its intended use, like on a yacht. But it's overkill for the average RVer. A Prevost maybe with 3 airs.

Imho an ideal size would be about 1/2 that... 200ah or so.

The 51 volts is a tad much for RV use less you do major rewiring or use a dc/dc converter But... cut it down to a 12 volt pack you'd have about 1/4 the weight and 1/4 the watt hours Sounds good to me.

Yosemite Sam1 wrote:

time2roll wrote:
pouch vs cylinder is just that... the shape. Pouch is just in the form of a rectangular box. Nissan uses the pouches in the LEAF. Pictures on the link.

Which packs more power with the limitation of size and weight?

https://batteryuniversity.com/learn/article/types_of_battery_cells

Summary from the article..

•Cylindrical cell has high specific energy, good mechanical stability and lends itself to automated manufacturing. Cell design allows added safety features that are not possible with other formats (see BU-304b: Making Lithium-ion Safe); it cycles well, offers a long calendar life and is low cost, but it has less than ideal packaging density. The cylindrical cell is commonly used for portable applications.
•Prismatic cell are encased in aluminum or steel for stability. Jelly-rolled or stacked, the cell is space-efficient but can be costlier to manufacture than the cylindrical cell. Modern prismatic cells are used in the electric powertrain and energy storage systems.
•Pouch cell uses laminated architecture in a bag. It is light and cost-effective but exposure to humidity and high temperature can shorten life. Adding a light stack pressure prolongs longevity by preventing delamination. Swelling of 8–10 percent over 500 cycles must be considered with some cell designs. Large cells work best with light loading and moderate charge times. The pouch cell is growing in popularity and serves similar applications to the prismatic cell.

time2roll wrote:
pouch vs cylinder is just that... the shape. Pouch is just in the form of a rectangular box. Nissan uses the pouches in the LEAF. Pictures on the link.

Which packs more power with the limitation of size and weight?

pouch vs cylinder is just that... the shape. Pouch is just in the form of a rectangular box. Nissan uses the pouches in the LEAF. Pictures on the link.

time2roll wrote:
Looks small for the capacity. Must be the advantage of pouch cells instead of the cylinders.

To the more knowledgeable dude. What's pouch cells?

And I just read that Tesla's advantage over others is their "cylindrical cells".

The battery technology must be in hyper-speed. I snooze and I'm already behind in info, lol.

2,000Ah equivalent at 12V is one large battery. The weight seems consistent with the capacity. What am I missing?

Looks small for the capacity. Must be the advantage of pouch cells instead of the cylinders.

pianotuna wrote:
Now, if the cold weather problem were solved.....


https://www.rj-lithium.com/sale-12037443-48v-500ah-lifepo4-25kwh-battery-built-in-bms-factory-price-lithium-ion-battery-for-house-bank-in-a-y.html

I don't know the price.

Nominal 51 volts 500 amp-hours (25 kwh). Maximum continuous draw 100 amps surge 600 amps (bms shut down current).

It's meant for homes and marine (yacht).

It's becoming lighter with new materials and technology. Wonder how long we have to wait for our RV needs.