Eco Battery "Skinny" 51v/105Ah Dimensions

[westcoaster]

Does anyone have the dimensions of the Eco Battery 51v/105Ah Skinny?
I didn't see the specs on the website. I emailed but haven't heard back yet. I'm working on a "custom" install.
Thanks..

[Capt. Lenny]

Might try contacting dallas@ecobattery on this forum or sending him a pm.

[PuttPutt]

Originally Posted by westcoaster

Does anyone have the dimensions of the Eco Battery 51v/105Ah Skinny?
I didn't see the specs on the website. I emailed but haven't heard back yet. I'm working on a "custom" install.
Thanks..

here you go.

https://ecobattery.com/s/product/det...c00000O7atvAAB

[augiedoggy]

Originally Posted by Jcasperson

if size is a factor Uno Batteries have the same footprint as an 8V Lead acid, just taller

For what its worth the uno and eco batteries are two different types of lithium batteries. and it matters for a couple reasons...

Uno uses 3.7v NMC cells which typically have a third the useful life expectancy of the lifepo4 (lithium iron phosphate) cells used in the eco batteries.

The advantage of NMC lithium ion is they pack more power in a smaller package but thats also one of the reasons they earned the bad rap for batteries catching fire.

The advantage of lifepo4 is they are much safer statistically and can last anywhere from 2000 to 6000 cycles and up to 20 years depending on application and how they are cycled... a golf cart is similiar to an EV application and they are rated for at least 2000 cycles in that heavy 1c or higher drain application. (lead acid is good for 500-700 typically)

[Volt_Ampere]

NMC have plenty of life expectancy if you treat them correctly. Tesla warrantees their battery for 8 years. I have NMC in my cart that I have been using daily for over 6 years and they perform like the day I installed them. (used Leaf cells) IMO, NMC are better but harder to obtain than LiFEPO4. I have no current limitations within reason with my Leaf cells. I expect to get at least 10 years out of my home built packs and by then I hope there are better options than today's drop-in's. They are getting better but many are marginal on discharge current performance. The EV industry is mostly NMC for good reason.

[augiedoggy]

https://www.asiafinancial.com/tesla-...losely-watched

I don't doubt what's being said about NMC batteries here. They are constantly improving as well but typically they still only have about half of the life of lithium iron phosphate. When looking at older leaf and prius cells you can see the battery technology has been changing and shifting As I imagine it will constantly do in the future. When I bought my cells I could have bought the nmc version for a bit less as they sell both so im not sure how difficult they really are to buy. they are a lot less commonly sold for DIY though it seems so that may be true.

Anyway I don't expect people to take my word for it I'm just saying it's something a person should research on their own before making the decision. they both have advantages but are different and ill leave it at that.

[Volt_Ampere]

When I built my first pack in early 2016, you could not get anything but NMC for the current requirements we have. The Leaf modules were really well suited for our use because they could be configured any way you want. (Almost - as each module is four cells in 2S2P configuration.) Not so anymore. Most if not all EV's have very custom designed battery systems that are not as easy to separate into smaller modules that give the proper number of cells for 50V operation. Number of cycles isn't an issue for our use either. I use mine almost every day and I charge once a week so that's about 50 cycles per year. I forget the specs on these cells but it's probably good for more than 20 years. Tesla has a good battery life track record with their Panasonic cells.

[Pat911]

The life expectancy of any lithium cell, regardless of chemistry is more dependent upon battery management than anything else. Treat them well and they will thank you, abuse them and they will punish you.

As many members here already know, I use the Leaf cells as well, but the battery management in the original Nissan Leaf was terrible, hence the very high battery degradation the Leaf is known for. Like Volt_Ampare, I’ve experienced no further degradation in the last two years on my already very degraded Leaf cells.

Having said that, I would use LiFePO4 cells if redoing the exercise today.

[Volt_Ampere]

One big problem with the original Leaf was battery temperature management. They were only air cooled and in hotter climates, they had lots of early battery degradation. I had a few friends in Colorado that had fairly early Leafs and they had no issues with them but in Phoenix, Az, they were a failure. My first Leaf modules came out of a very low mileage crashed Leaf and were in very good condition. It's almost impossible to find anything like that now. Newer Leafs use a very different battery configuration that does not lend itself as well to golf cart use. I got a pair of newer ones that were each 7S which work great but I think you only get four of these 7S modules out of a Leaf pack, the rest are some other configuration. If I build another pack (not likely until one of mine dies) I will have to search for something different. Since I don't know when that will be, I don't know what it will be. :-)

[augiedoggy]

Originally Posted by Volt_Ampere

One big problem with the original Leaf was battery temperature management. They were only air cooled and in hotter climates, they had lots of early battery degradation. I had a few friends in Colorado that had fairly early Leafs and they had no issues with them but in Phoenix, Az, they were a failure. My first Leaf modules came out of a very low mileage crashed Leaf and were in very good condition. It's almost impossible to find anything like that now. Newer Leafs use a very different battery configuration that does not lend itself as well to golf cart use. I got a pair of newer ones that were each 7S which work great but I think you only get four of these 7S modules out of a Leaf pack, the rest are some other configuration. If I build another pack (not likely until one of mine dies) I will have to search for something different. Since I don't know when that will be, I don't know what it will be. :-)

This site might come in handy.
https://batteryhookup.com/collections/whats-new