In this video, I put the Ampace JP40 cell to the test with a continuous discharge at 40A. We’ll go through the performance metrics, including voltage, current, power output, capacity, and temperature changes during the discharge cycle.
Test Details:
Initial Voltage: 4.14V
Test Mode: Constant Current (CC)
Discharge Current: 40A
Key Metrics:
Voltage: The cell started at 4.14V and maintained a stable voltage profile throughout the test. The minimum voltage recorded was 2.5V under load.
Current: A consistent 40A current was drawn during the test, highlighting the cell’s ability to handle high discharge rates.
Power: The power output peaked at 144.21W, demonstrating the cell’s capability to deliver substantial power.
Capacity: The total capacity utilized during the test was 4084 mAh, showing the efficiency and performance under high-drain conditions.
Temperature: The maximum external temperature recorded was 59.4°C, indicating excellent thermal management and stability.
Summary:
The Ampace JP40 cell performed exceptionally well under continuous 40A discharge, maintaining stable voltage and temperature levels. This test showcases the cell’s robustness and reliability for high-drain applications, making it a suitable choice for demanding projects.
Test conducted by: Nelvick Berrios
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For a detailed breakdown and further insights, make sure to watch the full video!
Just saw a post on the VESC group confirming that Austin at 18650-21700 sent these over. Do you know where he is sourcing them? The only place I have found to buy them is Alibaba and I don’t really trust those cells yet.
For anyone interested, the guys over on the Torque Test Channel compared packs built with these cells, using a high torque impact wrench on a calibrated precision torque dyno. I wont give up the comparative test result here, but its worth watching if you are considering buying some JP40’s.
Here is another test I performed on the JP40 cell, draining the maximum current it can provide—108A, from a single cell.
In the video, I also conducted the same test on a Molicel P42A.
The ampace JP40 seems to be the best high-drain 21700 in the world currently. I have watched a lot of tests, and it beats every single competitor. Sadly, you can’t get hold of any in europe yet.
