My first battery testing series is finished and the first conclusions are below. I'm also running a second series of tests with a low 100mA discharge current and by reading the voltage until now at a 30% discharge i have pulled 354 mAh. This means that if the voltage will not drop to fast in the next few hours we may get a capacity in the range of 900mAh.
Here are the summary of the results and conclusions
- The Git battery does not like my dual charger.
- The Git battery loses capacity faster under high load, but has better capacity at low loads (completely normal)
- The Git battery has bigger capacity by a margin under lighter load compared to my SJ battery.
- The SJ Battery has more consistent capacity regardless of the discharge rate.
- The SJ Battery keeps capacity a bit better under higher load
- The SJ Battery works OK with the dual charger.
Taken this into account and knowing that the Git2 has lower power consumption that the SJCam it means that the actual usable capacity of the GitUp Battery is larger than the SJ Battery
I have also investigated the dual charger a bit and it's open voltage varies between 4.35 to 4.45 which seems too high, so it's possible that mine is faulty.
Table results:
0.3A Discharge - charged with IMAX (Lowest / Medium / Highest)
GitUp Battery / charge 0.1A / discharge 0.3A - 691 / 745 /
780 mAh
SJCam Battery / charge 0.1A / discharge 0.3A - 687 / 730 /
763 mAh
0.5A Discharge - charged with IMAX (Lowest / Medium / Highest)
GitUp Battery / charge 0.3A / discharge 0.5A - 658 / 708 / 727 mAh
SJCam Battery / charge 0.3A / discharge 0.5A -
679 / 715 / 743 mAh
0.5A Discharge - charged with Dual Slot (Lowest / Medium / Highest)
GitUp Battery / discharge 0.5A -
641 / 688 / 704 mAh
SJCam Battery / discharge 0.5A - 681 / 700 / 721 mAh
0.5A Discharge - charged by camera (Lowest / Medium / Highest)
GitUp Battery (Git2)/ discharge 0.3A - 678 / 728 / 767 mAh
SJCam Battery (M10+)/ discharge 0.3A - 683 / 710 / 741 mAh
Highest capacity
Git battery: 780 mAh
SJ battery: 763 mAh
Lowest capacity
Git battery: 641 mAh
SJ battery: 679 mAh
Used in the test
3x Git batteries
3x SJ batteries
The test (part of) with explanations and details: