Vapcell AA 1800mAh P1418A (Black-Orange) 2020



Official specifications:

• Size: ø 14.2mm x 50.2mm
• Nominal voltage: Constant 1.50V +/- 0.02V
• Typical capacity: 1800mAh
• Minimum capacity: 1700mAh
• Weight: Max. 22g
• Charge by USB: 5V 350mA +/- 50mA
• Over current protection: 2-3A
• Maximum continuous discharge current: 1500mA
• Build in battery: LiIon INR14430 920mAh 3.6V

This is a USB charged LiIon backed 1.5V cell with a build-in buck converter to step voltage down.













This type of cell has a very stable output voltage independent of load up to the limit. The two cells has slightly different capacity.
The A 0.2A curve is due to a failed charge. At 2A the battery shuts down and recovers constantly.










The battery can deliver about 1.8A, then it will shut down.



This charge test is done much later than the other tests and the battery has not been charged in that period. This means it was completely empty and the cell must have been damaged due to that.



Conclusion

The cells works fine as 1.5V USB charged batteries. The maximum output current is fine compared to alkaline batteries, but cannot match a NiMH battery.
Also, the battery cannot be stored for prolonged periods, it must be charged at regular intervals, this will be the case for all LiIon based 1.5V batteries.



Notes and links

The batteries was supplied by Vapcell for review.

How is the test done and how to read the charts
Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium