Yes, same company now.
It should be available in button top protected. It basically replaced the older B version. Same capacity, but higher charge and discharge ability. It can maintain higher voltage under load. The chart below shows voltage with very light loads. The difference gets bigger as the load increases. I do not buy the B version any more.
Concerning li-ion 26650s NKON hasn't anything worth mentioning, imho. They have rewrapped cells but little OEM stuff. Efest is run by an undependable bunch of dorks, no need to say anything else (go ask Mooch at the E-Cigarette Forum). KeepPower likes to capacity overrate their cells and asks more money than I'd be willing to pay.
That is the PLB 5500mah (same as Shockli 5500mah) that is quite good. They carry with or without protection circuits.
The iJoy 4200 is a good high drain 26650 for when you need lots of amps.
Would it be fair to say the max MAH for
18650 =3400mah
26650= 5500mah
Any battery claiming to be above those figures should be avoided as even the very best manufacturers haven’t achieved cells above those capacities yet.
(this eliminates a great number *.fire & green wraps)
You are nearly correct.
Use this table: List of tested batteries
Click on the header of the 0.2A column to sort with highest capacity first.
Then you can select battery size in the size column and see the largest capacity I have seen.
Pretty much.
3500mah is the 18650 limit with cells such as the LG MJ1 and and Samsung 35E. I think there was a new cell labeled a 3600, but it actually measured closer to 3500.
5500mah is the limit for 26650 although Keeppower used 6000 on their older label. These PLB cells actually measure around 5750mah.
So any 18650 higher than 3600mah and any 26650 higher than 6000mah are probably misrepresenting themselves.
PS, I think the highest capacity 21700 is 5200mah, but new ones are popping up all the time.
Thank you for the review and comments.
I have a few of them which I got pretty cheap and given the high current I’m thinking of using them to make a pack for my 18V chainsaw.
Upon 1A testing, the record capacity among 10 tested cells was 5991mAh, which is pretty nice.
So instead of using 5S4P 18650s (which was getting me near 12Ah) I’m willing to sacrifice them to try a 5S2P setup with this type of cell.
Pound for pound (volume to volume) the 18650 and 21700 from the big 5 Japanese companies have the highest capacity.
Consider that the 26650 has right around double the volume of an 18650 cell. If they made an 26650, which they dont, it would be 7000mah.
I’m guessing the cells they used in the battery pack were not the highest capacity? They tend to use cheaper cells to keep costs down.
Do you? I thought the same about Tesla cars. I assumed they needed low resistance for more power, but they use the highest capacity cells available. The sheer number of cells gave them all the amps they need.
With 20 cells in the chainsaw battery pack, you might not need such high amperage from each cell.
The PLB INR26650-55A is like 2x 18650 mid capacity and power cells. 5S2P is 10 cells, with a maximum continuous power delivery of 60W/each. Thus, 600W continuous maximum gross input power to the motor. I am no expert in chainsaws but that sounds quite lacking. 30 cells could do up to 1800W continuous and be about comfortable at 1500W continuous, which is just ≈2HP anyway. But electric engines have very high amounts of torque at low to mid rpm, and so…
These Makita batteries look quite small, like drill batteries. Still, surprising result. But just a bit.
@JasonWW - true what you say about the volume-capacity ratio: 18650s are the best, but that is due to the heavy investment in them. They are the most used today. 26650s may improve due to the upcoming electric cars.
Also note that the Panasonic 3500mAh 18650 is limited to 10A and I have not seen any in any power tools (and no power tool batteries like 3.5Ah or 7Ah). The best they all use are the Samsung 3000mAh, which by all fair stadards are not really 3000mAh at high current.
@BlueSwordM - yes, higher current instead of higher capacity. This is preferable for any top power tools.