HKJ
(HKJ)
1
Geteed 21700 4800mAh (Yellow)
/DSC_9301.jpg)
Official specifications:
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Battery: 21700
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Battery Type: Lithium-ion
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Head Type: Flat Top
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Protected: No
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Practical Capacity (mAh): 4800mAh
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Voltage(V): 3.7V
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Charge Current: 1A
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Max. Discharge Current: 35A
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Charging Time.: standard charge: 5h rapid charge: 2.5h
This is a unknown brand with a high capacity 21700 cell.
/DSC_9300.jpg)
/DSC_9302.jpg)
/DSC_9303.jpg)
/DSC_9304.jpg)
/DSC_9305.jpg)
/Geteed%2021700%204800mAh%20(Yellow)-Capacity.png)
The discharge curves looks very good up to 10A, at higher current the cell gets too warm.
/Geteed%2021700%204800mAh%20(Yellow)-Temp-10.0.png)
/Geteed%2021700%204800mAh%20(Yellow)-Temp-15.0.png)
/Geteed%2021700%204800mAh%20(Yellow)-Temp-20.0.png)
/Geteed%2021700%204800mAh%20(Yellow)-CapacityTimeHours.png)
/Geteed%2021700%204800mAh%20(Yellow)-CapacityTime.png)
/Geteed%2021700%204800mAh%20(Yellow)-Energy.png)
/Geteed%2021700%204800mAh%20(Yellow)-PowerLoadTime.png)
/Geteed%2021700%204800mAh%20(Yellow)-TripCurrent.png)
/Geteed%2021700%204800mAh%20(Yellow)-Charge.png)
Conclusion
This is a good quality cell with a lot of capacity, but it is not a high current 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
maukka
(maukka)
2
Thanks for the test! Looks like a Samsung INR21700-48G is under the wrappers and not a bad price at under $8
Satan
(Satan@103TFS)
3
Thanks HKJ ,very look alike Samsung INR21700-48G .
d_t_a
(d_t_a)
4
Apparently the Geteed 4800mAh 21700 would really be the Samsung INR21700-48G, as can be seen underneath the wrapper…
INR21700-48G
Samsung SDI
Any idea how to identify the date code of this Samsung battery? It indicates “H3B1” and “W24”.
lumiere
(lumiere)
5
Slightly cheaper at BG, $13.99 for two after coupon AC18 (with free shipping to US):
