Battery Data

I’m publishing here the data I collect during my experiments and tests with mostly LiFePO4 cells. I use the ZKE-Tech EBC-A20 and ZKE-Tech EBC-A40L tester for that. Links to both devices can be found here.

If you don’t have any of these testers but you still would like to analise the data, you can simply download the ZKE software and install it on your Windows PC. All csv files below can then easily be imported into the software for further study.
The download for the software is here (without actual tester, you only need to download the eb_setup_v1.8.5en_1001.exe file and the manual if needed).


Ubetter LiFePO4 Cell, 3.2V 100Ah

Product link
Datasheet (PDF)

Test 1:
Full Charge/Discharge
Charge: 5A (0.05C) to 3.65V
Discharge: 20A (0.2C) to 2.5V
Temperature: 21°C
Tester: ZKE-Tech EBC-A20

Charge and discharge graphs
Full charge and discharge curve data
Download Data (pdf and csv files)
Full video and analysis


Test 2:
Capacity Test with different SOC
Charge to 3.5V with and without absorption.
Charge to 3.4V with and without absorption
Measure achieved capacity by discharging to 2.5V for all 4 tests
Charge and discharge: 20A (0.2C)
Temperature: 20-24°C
Tester: ZKE-Tech EBC-A40L

Test 2.1: CV Charge 3.5V/20A, CC Discharge 2.5V/20A, no absorption
Capacity charged: 108.06Ah
Energy charged: 360.41Wh
Capacity discharged: 107.28Ah
Energy discharged: 345.13Wh

Test 2.2: CV Charge 3.5V/20A, CC Discharge 2.5V/20A, with absorption to 0.1A
Capacity charged: 110.34Ah
Energy charged: 372.11Wh
Capacity discharged: 109.17Ah
Energy discharged: 350.32Wh

Test 2.3: CV Charge 3.4V/20A, CC Discharge 2.5V/20A, no absorption
Capacity charged:
Energy charged:
Capacity discharged: 95.74Ah
Energy discharged: 308.19Wh

Test 2.4: CV Charge 3.4V/20A, CC Discharge 2.5V/20A, with absorption to 0.1A
Capacity charged:
Energy charged:
Capacity discharged: 109.32Ah
Energy discharged: 352.05Wh

Download Data (bmp and csv files)
Full video and analysis


Test 3:
CV charge from 2.5V to 3.35V with full absorption.
Charge current: 20A
Temperature: 20°C
Will the cell stop charging at some point or continue taking energy and eventually overcharge?
Tester: ZKE-Tech EBC-A40L

Charge graph (bmp)
Full charge curve data (.csv)
Download Data
Full video and analysis


Test 4:
Charging and discharging with 30A

Charge curve (bmp)
Full charge and discharge curve data (csv)
Download data


Test 5:
Charging with different currents from 5A to 40A to 3.5V.
Discharging with 20A to 2.8V.
Measuring time, capacity and efficiency of different charging currents.
Tester: ZKE-Tech EBC-A40L

All charge and discharge curves for 5A, 10A, 20A, 30A and 40A (bmp)
Full charge and discharge curves data (csv)
Download Data
Full video and analysis


EVE LiFePO4 Cell, 3.2V 280Ah

Product link and data sheet.

Test1:
Manual CV charge to 3.5V with full absorption.
Discharge: CC 40A to 2.9V
Charge: CV 40A to 3.5V
Tester: ZKE-Tech EBC-A40L

Charge/discharge graph (bmp)
Full charge and discharge curve data (.csv)
Download Data
Full video and analysis


EVE LiFePO4 Cell, 3.2V 304Ah

Product link and data sheet.

Test 1
Capacity test of all 4 cells.
Discharge form 3.65V with CC of 40A to 2.5V.
Compare capacities and spread.

Charge/discharge graph (bmp)
Full charge and discharge curve data (.csv)
Download Data
Full video and analysis


PALO LiFePO4 32700
-7200mAh
-5C discharging
-3A charging

Product Links


Test 1:
Capacity test each cell
Charge and discharge with 0.2C from 2.5V to 3.65V.
Overlay all graphs to visualize the spread of capacity.

Charge/discharge graph (bmp)
Full charge and discharge curve data (.csv)
Download Data
Full Video review and capacity test


Test 2:
High current discharge test with 5C, 35Amps.
Measuring amps and temperature

Charge/discharge graph (bmp)
Full charge and discharge curve data (.csv)
Download Data
Full Video review and capacity test


Test1:
Full Charge/Discharge test Discharge: 0.45A (0.05C) to 10.5V
Charge: 0.9A (0.1C) to 14.7V
Temperature: 17°C
Tester: ZKE-Tech EBC-A20

Charge and discharge graphs
Full charge and discharge curve data
Download Data (bmp and csv file)
Full video and analysis


Test 2:
Full Charge/Discharge test Discharge: 0.45A (0.05C) to 10.5V
Charge: 0.9A (0.1C) to 13.8V
Temperature: 17°C
Tester: ZKE-Tech EBC-A20

Charge and discharge graphs
Full charge and discharge curve data
Download Data (bmp and csv file)
Full video and analysis


All product links on this page are affiliate links to support the channel. I’m getting paid a small commission if you order products or services through these links. This does not make the products or services more expensive for you.

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