Test/review of Shockli 26650 5250mAh (Green) 2018

[volchyonok]

@BlueSwordM

I’ve seen that cell before. It’s really interesting to see customs sizes surging in the market, like the 38120 LiFePO4 cell that was starting to be offered a while back used, and still have extremely low internal resistance.

Regarding the iron-phosphate elements, I can say that they do not suit me, because for the battery I have already bought bms for lithium-ion batteries, which have 4.2v (3.6v or 3.7v). Regarding the constant rise in prices, I can answer that it needs to be said “many thanks” to the current owner of the dollar (:money_mouth_face:, the growth rate of which is often created from scratch and has no adequate soil for this. Many have already understood that modern leaders of different countries see the development of the economy not in the growth of production, but in a simple increase in prices for almost everything. That is, they do not create the economy, but make inflation.

@BlueSwordM

The 26980 though looks huge. I have no problem believing it can sustain continuously 50-60A continuously with a capacity of 6Ah.

Until we see real results on different current loads from a professional appraiser of HKJ elements, we can only guess what these 26980 are and what it really is. If you start surfing the internet looking for such items in 26980 other stores, then you can meet exactly the same elements of 26980 6000mAh, but with a completely different characteristic for the “C” discharge. For example, they may be marked not as “15C”, but as “3C”. How can this be, if in appearance they are exactly the same, including the color of the case and the negative conclusion partially protruding outside? Somewhere it says “10C” or “5C”.
That is, whoever wants, he will write as much or, after all, is it true about the ability to withstand current shocks of 60 amperes?

@HKJ

My normal test are limited to 70mm long cells and 30A

In principle, tests up to 30 amps can be considered quite sufficient and very informative, moreover, given the suitability of the elements for powerful electric motors, where several parallel “P” are used in each cell.

So, for example, when from the HKJ tables we see that if a single element heats up, but it successfully copes with its main task (in this case there will be several elements in parallel in our battery in each cell), then we get an excellent and powerful battery because as a result, the internal resistance and heating will be several times less. Moreover, in addition, the capacity of such a jar will be greater.