So I ordered a pair of these Sunway 26650 5000mAh from the Sunway store on Ali.
They arrived at almost exactly 4V, which is higher than any batteries I have received before.
I immediately tried them in my L2, and they just fit width-wise, seem perfect length-wise with the included magnets between them.
Light worked well so I put them in my Lii500 for a normal discharge cycle test.
End result 4506@4.2v and 4499@4.19V. Took about 15 hours to charge/discharge/charge since the discharge is limited to 500mA.
I thought at first these are 4500 models being sold as 5000, then I thought, maybe they are old, or were stored at too high a voltage, let me try again and see if they improve with another cycle.
End result about 4570 and 4607 (from memory - I forgot to record). I haven’t tried again yet.
Thoughts?
Old? badly stored? overrated?
Should I just continue to cycle and see what happens?
I’m not disappointed, just curious about the discrepancy and the reason for it. Other batteries I have received have always been within 5% of rated capacity, and never over 3.8V on arrival. Maybe I’ve just been lucky? What is a reasonable expectation?