Panasonic NCR18650B 3400mAh (Green) Official specifications:
 This is the latest cells from Panasonic with the highest capacity. The cell used can be discharged down to 2.5 volt, in my test I only discharges to 2.8 volt, i.e. I do not measure the full capacity. But then, not all lights will be able to use the full capacity.      These batteries are good at both low and higher current.     These are unprotected cell, i.e. the protection will not trip. Conclusion This is genuine Panasonic cells and cannot get any other rathing than very good, but remember that they are unprotected! Notes and links How is the test done and how to read the charts How is a protected LiIon battery constructed More about button top and flat top batteries |
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