The performance of the 3400 Panasonic cells is great. They maintain the voltage stable long and can provide a lot of power (for TN12 (2014) Owner / Buyer: Turbo Mode, you can see clearly when fully charged - only if someone needs).
So far I have only a charge through, so I can not yet say for long-term stability. However, since the cells used keep id usually long, I have little doubt.
A small note I still true to size
The length matches exactly 70mm. The cross-section is however quite high and not exactly round by the second heat-shrinkable film. When my batteries (ordered in October) are the welds of the film exactly on the protective tape and over under the label. This is the diameter at the point exactly 19mm. The "short" diameter is 18.4mm with my other hand.
That should keep in mind, if one wishes to use in a rule id round flashlight cells. Since the thickest part is of course the limiting factor. By removing the white label, which incidentally falls almost by itself in my, some space can still win. Perhaps it might help the battery with protective tape prior to shrinking to rotate by 90 ° and to stick the label next to the protective tab instead opposite.
All that is in my TN12 but not critical because there is enough space in it.
Overall, I am fully satisfied.
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* Unless you know exactly what you do - namely a protected and an unprotected battery hopefully not short-circuit. But then one could directly buy a cheaper unprotected ...
