Hello, I’m looking for good 18650 Cells. Building 10s3p battery. What can you offer? Maybe INR18650-25R?
Typical are import cells Samsung, LG, Panasonic and a few people are playing with A123 26650’s.
It depends on how many amps your setup is going to be pulling, and your price range.
I think the gold standards are the Samsung 25Rs. They’re are solid cell with a solid continuous discharge rate (20A) and a great pulse discharge rate (100A).
There are definitely some fantastic packs built with LGs Panasonics and A123s. Here’s the cells I considered along with some basic specs.
- A123 26650: 70A Continuous, 120A Pulse, 2500mAh
- Basen IMR 26650 40A Continuous, 60A Pulse, 4500mAh
- LG HE2: 20A Continuous, 35A Pulse, 2500mAh
- LG HE4: 20A Continuous, 35A Pulse, 2500mAh
- LG HD2: 25A Continuous, 2000mAh
- LG HD2C: 20A Continuous, 2100mAh
- LG HG2: 20A, 30A Continuous, 3000mAh
- Samsung 25R: 20A Continuous, 100A Pulse, 2500mAh (Green = Newer, Better longevity/cycles. Sometimes listed as 25R5)
- Samsung 25R: 20A Continuous, 100A Pulse, 2500mAh (Blue = Older)
- Samsung 20R: 22A Continuous, 2000mAh
I am personally trying to decide between samsung 25Rs, Lg HE4s, or Lg HG2s. For my 12s4p build, I am leaning towards the HE4s since they are cheaper.
Yeah those are the main cells that I think most deliberate over. Between those it usually comes down to price vs what setup you need. For example I decided that I went for the lowest price per capacity (and found a great deal on Samsung 25Rs which decided it) Someone else may be looking for a solid discharge rate (if they’re only a 2 parallel pack for example) and may opt for the HG2 or even A123 instead of a Samsung.
gold standard for me is HG2, not samsung 25r! the jump in capacity from 2500 to 3000mAh is a significant 20% … and HG2 got quite a bit cheaper in the last months … I recently bought them for 5€/cell!
And unless its just marketing hype the lg2 are much safer chemistry as well. They don’t bother even with adding a gas vent. Piece of mind
I stand corrected. I just found the HG2s to be slightly more than I wanted to spend. Definitely a fantastic cell though!
@STREETSURFER I’ve seen it cheaper on gearbest and fasttech but the sales come and go. Definitely be careful. I can’t say those are the sites I can fully recommend. Some have had no issues while others have had some pretty bad experiences.
With regards to choosing a cell for a DIY set up, keeping watthours the of the battery pack the same, is there a benefit to running a higher voltage set up with lower amps (12s2p) verses a lower voltage set up with high amperage (6s4p)? I’ve just started into looking into making a battery pack a though know if I fully understand the benefits of one over the other. A system with a higher voltage would draw less amps but does that directly translate into less stress on the motors or it ends up being equivalent?If it influences the decision I am 220 lbs
6S4P would give you the same range as 12S2P but 12S would be more efficient and get a higher speed.
Any idea on the Fenix ARB-L4-4800 26650 batteries? I couldn’t find their discharge rate anywhere
And what about the brand Efest?
Never heard of Fenix batteries. I did some searching on reddit and endless-sphere, but I didn’t find a single post about Fenix 26650 batteries. I found 1 about a Fenix 18650 battery, but they only mention them very briefly. Probabaly not one I’d trust right now…but apparently they make great lights!
I think there’s some discord about Efest, but over-all I believe the e-bike community doesn’t trust them and the vaping community trusts them a little bit, but not much. I think some cells are better than others from what I’ve found.
If you want some great info, there’s some amazing testing going on over in some vaping forums that I found. Check out his explaination here and his results here. He tests every cell personally at specific constant and pulse discharge currents.
Thanks for the reply, if I decide to proceed with this battery pack thing I think I’m screwed, cause I only have acess to the Samsung 26F ones and they have a Max. Discharge Current of 5200mA, that’s way too low, right? I don’t really know how to handle that number when having a series/parallel setup, for example, I’d like to start with 6S2P, how about that? Thanks!
i love my sammys.
The only benefit to higher voltage is faster speed with the same kv motor and keeping esc cooler and batteries with a lower amp draw. Ur motor will perform the same with higher or lower voltage if the kv is adjusted as well. Not hotter or cooler.
LG Hg2 forever.[quote=“whitepony, post:7, topic:6240”] gold standard for me is HG2, not samsung 25r! the jump in capacity from 2500 to 3000mAh is a significant 20% [/quote]
Golden words !!! LG HG2 all the way.
Yeah, the 26F won’t cut it for an e-board.
Where are you located that you only have access to the 26F?