Can you tell me how much one of the 55ah cells weigh? I'm thinking of buying either these or the 100ah packs they have made out of their 32650 cells. Thanks
Cylindrical cells 100AH
- Thread starter jah
- Start date
LiCurious
New Member
- Joined
- May 21, 2021
- Messages
- 26
Roughly 3.6875 lbs (3 pounds and 11 ounces).
Thanks, they will be about the same as the 100ah packs.
I have placed an order for 12 100ah, they said the packaging have been improved thanks to your feedback, 652$, including shipping by train to Europe.
I will post the capacity test when they will arrive
newbostonconst
Solar Enthusiast
- Joined
- Sep 24, 2019
- Messages
- 1,004
I have bought 64 of these and tested 40 of them so far and they all put out over the 55 amp hour rating....I stopped the test once they hit 55 so don't have numbers but they were all good.
My 12 cells have arrived, the whole process has been very smooth, they have arrived in perfect conditions, well protected with multiple layers, although the cell would be better into more consistent bedding:
They include both holders and busbars, it is easy to build any configuration:
I have tested all the cells individually, charging at 10A and discharging at 20A, and the results are quite good, all 110-111Ah
They check every cell before delivering them:
Now I am just looking at how to best combine them into a 3p4s pack.
They have exceeded my expectations, soon I will order 96 for my next project, my home solar setup.
They include both holders and busbars, it is easy to build any configuration:
I have tested all the cells individually, charging at 10A and discharging at 20A, and the results are quite good, all 110-111Ah
They check every cell before delivering them:
Now I am just looking at how to best combine them into a 3p4s pack.
They have exceeded my expectations, soon I will order 96 for my next project, my home solar setup.
Last edited:
Just to comment, that my capacity has an error measuring 6% in excess, so the real capacity is about 103Ah
PS: I have edited the message after validating my capacity tester against a Victron shunt. I am starting to think that the cells sellers pay a fee to the producers of low-cost capacity testers to play in their favor
PS: I have edited the message after validating my capacity tester against a Victron shunt. I am starting to think that the cells sellers pay a fee to the producers of low-cost capacity testers to play in their favor
Last edited:
If I’d known about those before I build my 280Ah prismatic cells, I would have gone that route:
-aluminum threaded terminal on one end and what is presumably a plated copper threaded terminal on the other end
-no need for a pressure fixture
Of course, this is assuming you can find true grade A cells direct from the manufacturer (meaning they will likely cost more than this reseller store probably selling factory reject or old cells).
curiouscarbon
Science Penguin
- Joined
- Jun 29, 2020
- Messages
- 3,022
So far it sounds as though everyone who has capacity tested these cells has gotten what they paid for (which suggests they are true Grade A cells and that the vendor may actually be the manufacturer rather than a reseller).
Has everyone been purchasing these cells from the same place?
Are there any limits as to how large of a battery can be build with these cells?
Is there a maximum size that they offer the plastic holders?
The seller is the manufacturer, you only can buy from them, no resellers.
There is no limit in the size, the holders are for two cells, so you can build them in any size, they even send you the long screws to joint both sides, you can link new holders in every direction.
The terminals are M14 and M10 both very robust, no problem of torque.
As the diameter is not the same, they ask you for your configuration, because busbars are different for parallel or serial.
They are new, grade A, well matched. I am now combining them at random to test on packs, and they are well in balance.
There is no limit in the size, the holders are for two cells, so you can build them in any size, they even send you the long screws to joint both sides, you can link new holders in every direction.
The terminals are M14 and M10 both very robust, no problem of torque.
As the diameter is not the same, they ask you for your configuration, because busbars are different for parallel or serial.
They are new, grade A, well matched. I am now combining them at random to test on packs, and they are well in balance.
Last edited:
They are not the cheapest option in the marked, you pay 42$ per cell plus shipping.
I guess they are selling this cells to other manufacturer's, very, very few to retail.
I want to thank newbostonconst, he was the one buying and testing the first 4, without his report I never venture to buy my 12
I guess they are selling this cells to other manufacturer's, very, very few to retail.
I want to thank newbostonconst, he was the one buying and testing the first 4, without his report I never venture to buy my 12
Regarding performance, they are in the specifications, so it is what I expected.
With the same space limitations, I would do it again with that cells, but the price is a little bigger than prismatic ones, so for a home solution, I would do it with prismatic.
I don't know how realistic is the number of cycles, but prismatic offers 3000-3500, specifications for these ones is 1500, more than enough for an RV but not for a solar system.
F603200c 100ah 3.2v Lifepo4 Battery Cell For Solar Energy Storage System - Buy Solar Battery lifepo4 Battery lithium Battery Product on Alibaba.com
F603200c 100ah 3.2v Lifepo4 Battery Cell For Solar Energy Storage System - Buy Solar Battery lifepo4 Battery lithium Battery Product on Alibaba.com
www.alibaba.com
They are performing well, I have only done 9 cycles, most of the days only 5% draining them in the night and refilling during the day, as it is a RV that we only use occasionally.
Attachments
Similar threads
