Ebat battery review


Ebat battery review

In this quick article i will show the result of the tests of the Ebat batteries I have done. Links in bottom of page.

Equipment and test scenarios

  • Icharger Duo 308 for testing capacity
  • Flir I7 to meassure the temperature of the cell
  • Logger on PC for below graphs

All discharge tests done on the icharger have the max Volt set to 4.2V and low cut off at 3.0V. Current cut off is set to 10% of the max. Tests done for capacity wise was done with 0.2C as mentioned on their webpage

Last test was done with the Opus BT-3100 at 1A.

Info (Links in bottom

Battery 1 & 2 are the 2500mAh battery with max continous discharge at 20A

Battery 3 & 4 are the 2900mAh battery with max continous discharge at 15A

Battery 5 & 6 are the 5000mAh 26650 cells.

 

Ebat
Battery Init volt Stated capacity Cap test C Capacity test mA Capacity 1 Capacity full load Temperature (C) Capacity
Opus@1A
Weight on
webpage
Meassured
weight
ptc/cid bounce back volt Temperature
During test
1 3.545 2500 0.2 500 2380 2475 73 2580 50 45 yes 3,12 20
2 3.551 2500 0.2 500 2445 2470 85 2530 50 45 yes 3,12 20
3 3,526 2900 0.2 580 2718 2783 74 2886 46 45 yes 3,14 20
4 3,530 2900 0.2 580 2832 2803 76 2870 46 45 yes 3,13 20
5 3,83 5000 50 95 yes 20
6 3,81 5000 50 95 yes 20

 

Below is all graphs collected. Both the normal one and the full 20/15A tests done.

Cell 1 0.2C Discharge

Cell 1 Full load (20A)

Cell 2 0.2C discharge

Cell 2 Full load (20A)

Cell 3 0.2C Discharge

Cell 3 Full load

Cell 4 0.2C discharge

Cell 4 Full load (15A)

 

Conclusion

Pretty darn impressive results! Even though I only ran through full tests on the first 4 cells they did perform.

All 18650 Cells did perform both capacity wise and current wise. The capacity was around or close to the said capacity. The max current also worked out but you need to beware of that they will reach 80C easily! Their rated nominal current is pretty low but on the other hand no heat came with running them at 1A.

If the number of cycles will be correct that they state (500+cycles) im not sure about. Neither did they have numbers regarding the SOC for the number of cycles

The price on them are very competitive!

Negative things i did find was that they did not have any datasheet on their webpage and the pages did differ from each other.

26650: The capacity was around 5Ah as stated. No issues here but I did not test the max current draw on them.

Would I buy them if i need/got a good offer? Yes I would.

 

Links:

Battery 1 & 2 – 2500mAh 18650 battery

Battery 3 & 4 – 2900mAh 18650 battery

Battery 5 & 6 – 5000mAh 26650 battery

 

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