On this site, I’m publishing the data I have collected 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 and exploration.
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 LF280 LiFePO4 Cell, 3.2V 280Ah
Test1:
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 LF304 LiFePO4 Cell, 3.2V 304Ah
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
Test2:
Capacity Test Cell #1, discharge from 3.65V to 2.5V, 40A
Repetition of discharge test of cell #1 11.03.2023 (18months later than Test1)
Discharge data and curve (.csv and BMP)
Download Data
EVE LF304 vs. EVE LF304 Certified Automotive Grade Cell
Test1:
Discharge from 3.65V to 2.5V, 40A
Comparing graphs and internal resistance
Capacity and graph comparison of Qishou #1 (09.2021 and 03.2023) and EVE LF304 certified automotive grade cell #1
Comparison graph (bmp)
All 3 discharge curves (.csv)
Download
Video with analysis
EVE LF304 LiFePO4 cell, 3.2V 304Ah with studs
Test1:
Full charge/discharge cycle
2-5V-3.65V, 40A, 15.2A cut-off
3.65V-2.5V, 40A
Charge/discharge graph (bmp)
Full charge and discharge curve data (.csv)
Download Data (link fixed. Thanks, dobrzpe!)
Full Video review and capacity test with detailed explanation of charge and discharge curve
3 Cell Comparison
– Rept 280, certified automotive grade
– 10.000 cycle 280Ah battery, storage grade
– EVE LF 280K, storage grade
Test1: Fully charge cell and measure internal resistance
Rept 280: 0.2mΩ
10k 280: 0.21mΩ
EVE LF 280K: 0.2mΩ
Test2: Fully discharge the cells from 3.65V to 2.5V with 40A. Overlay the discharge curves
Discharge curves (bmp)
Discharge data (csv)
of all 3 cells
Overlay curve (bmp)
Download Data
Test3: Fully charge the cells from 2.5V to 3.65V with 40A. with 1A cut-off. Overlay the Curves
Charge curves (bmp)
Charge data (csv)
of all 3 cells
Overlay curve (bmp)
Download data
Full Video and analysis.
Fake Hithium 280Ah, 10.000 cycles LiFePO4
Test1:
Full charge/discharge cycle
Charge:
2-5V-3.65V, 40A, 1A cut-off
Discharge:
3.65V-2.5V, 40A
Charge and discharge graphs (bmp)
Full charge and discharge curve (.csv file)
Download data
Review video here with explanation of charge and discharge curve
PALO LiFePO4 32700
-7200mAh
-5C discharging
-3A charging
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
T-Power 12V/9Ah AGM Battery
Test 1:
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
AoLithium 12V 100Ah LiFePO4 Battery
Test 1:
Test of all 4 individual cells.
Charge from 2.5V to 3.65V, 20A
Discharge from 3.65 to 2.5V, 20A
Charge and discharge graphs
Full charge and discharge curve data
Download Data (bmp and csv file)
Shenzen Basen 12V/100Ah Battery
Test1:
Fully discharge from 14.5V to 10V with 6.5A
Discharge graph
Download Data (bmp and csv file)
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