Sanyo UR18650ZY 2600mAh (Red)

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Official specifications:
Sanyo%20UR18650ZY%202600mAh%20(Red)-info

This cell is some years old (Datasheet from 2012) and capacity and current is not very impressive by todays standard,

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Sanyo%20UR18650ZY%202600mAh%20(Red)-Capacity

The discharge curve looks good, the two cells tracks nicely and capacity is fairly constant with load.

Sanyo%20UR18650ZY%202600mAh%20(Red)-CapacityTimeHours

Sanyo%20UR18650ZY%202600mAh%20(Red)-CapacityTime

Sanyo%20UR18650ZY%202600mAh%20(Red)-Energy

Sanyo%20UR18650ZY%202600mAh%20(Red)-PowerLoadTime

Sanyo%20UR18650ZY%202600mAh%20(Red)-TripCurrent

Sanyo%20UR18650ZY%202600mAh%20(Red)-Charge



Conclusion

Being old style non-IMR 2600mAh cells they do have a fairly high voltage during discharge, in some applications this is an advantage compared to the newer 2900+mAh cells (This advantage is also shared with the 4.3(5) volt cells).

It is a very good cell.



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
Compare to 18650 and other batteries