Sanyo UR18650ZT 2800mAh (Orange)



Official specifications:

• Battery Capacity: 2800 mAh
• Battery Chemistry: Lithium
• Battery Feature: Rechargeable
• Battery Form Factor: 18650
• Battery Maximum Voltage: 4.3 V
• Battery Minimum Voltage: 2.75 V
• Battery Rated Voltage: 3.7 V
• Brand: SANYO

This battery needs a 4.3 volt charger to get maximum capacity.










With a 4.3 volt starting voltage the output voltage from this battery is higher than most 4.2 volt batteries.















Test with 4.2 volt charging



Using a normal 4.2 Volt charger looses about 210mAh and some of the voltage advantage.

















Conclusion

Being from Sanyo it is a very good battery. Using the battery with 4.2 volt it is close to 2600mAh batteries in voltage, but with slightly less capacity. Using a 4.3 volt charger the battery has a slight advantage over 2600mAh batteries.



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