Sanyo UR16650ZTA 2500mAh (Magenta)



Official specifications:

• Rated capacity: 2330mAh
• Minimum capacity : 2380mAh
• Typical capacity: 2500mAh
• Nominal voltage. 3.7V
• Charging voltage: 4.35V
• Charging current: 1190mA

Test at 4.35V charge voltage



This battery size matches two CR123 batteries in diameter and length, but has lower voltage. In some cases it is a very good replacement.










The cells match fairly well and can deliver 5A, but not 7A.















Test at 4.30V charge voltage



Reducing the charge voltage means about 80-100mAh less capacity.

















Test at 4.20V charge voltage



With a regular 4.20 volt charger the capacity is reduced 260-280mAh.



The cell needs to warm up before it can handle a 5A discharge.















Conclusion

This cell cannot match a 18650 cell, but when the slightly lower diameter is needed it is a 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