it is a powerful battery. the most powerful one that I bought from here. I liked that so much cuz I guess only that battery can keep my lamp opened for the longest time. I tried to buy more but it finished. please bring new ones. I don't think there is a con about that product. if you use the light for a long time in once, it is getting hot as you know.... Read more
First impressions are good, now will test them to see if they are holding up, one thing that I noticed it the protection kicks in at 2.8v I believe that these Panasonic cells are able to go down to 2.6v (or it is 2.5v), have not tested this, it is what is written on the cells, which means you do loose some capacity due to the protection. None so far ... Read more
Panasonic NCR18650B inside
Excellent build quality There are cheaper protected NCR18650B Length 68.6mm
Width 18.3mm (at the widest part)
PCB undervoltage cutoff: 2.43V (measured at 0.5A discharge current)
PCB overcurrent cutoff: 7.5A (measured with full and almost empty cell) There are two versions of this battery: old version with PCB at negative pole ... Read more
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