Turnigy Graphene 5000mAh 65C Li-ion Battery Data
Description
The included tests were performed at McMaster University in Hamilton, Ontario, Canada by Dr. Phillip Kollmeyer (phillip.kollmeyer@gmail.com). If this data is utilized for any purpose, it should be appropriately referenced. A new 5Ah Turnigy cell (Turnigy Graphene 5000mAh 65C cell) was tested in an 8 cu.ft. thermal chamber with a 75amp, 5 volt Digatron Firing Circuits Universal Battery Tester channel with a voltage and current accuracy of 0.1% of full scale. The test methodology and files are described in detail in the readme file. /*************************************************/ A series of tests were performed at six different temperatures, and the battery was charged after each test at 1C rate to 4.2V, 5mA cut off for charge current, at battery temperature of 25degC The tests were performed as follows: 1. Four pulse discharge HPPC test (1, 2, 5, and 10C discharge and 1, 2, 5, and 10C charge, with reduced values at lower temperatures) performed at 100, 95, 90, 80, 70..., 20, 15, 10, 5, 2.5 % SOC. ("..._HPPC.mat") 2. C/20 Discharge and Charge test. ("..._C20DisCh.mat") 3. 0.5C ("..._Dis_0p5C.mat"), 2C ("..._Dis_2C.mat"), and two 1C ("..._Cap_1C.mat") discharge tests. The first 1C discharge test is performed before the UDDS cycle, and the second is performed before the Mix3 cycle. 4. Series of four drive cycles performed, in following order: UDDS(..._UDDS.mat), HWFET(..._HWFET.mat), LA92 (..._LA92.mat), US06 (..._US06.mat). 5. A series of eight drive cycles (mix 1-8) (..._Mixed#.mat) consist of random mix of UDDS, HWFET, LA92, US06. The drive cycle power profile is calculated for a single Turnigy cell in a compact electric vehicle. 6. The previous tests are repeated for ambient temperatures of 40degC, 25degC, 10degC, 0degC, -10degC, and -20degC, in that order. For tests with ambient temperature below 10degC, a reduced regen current limit is set to prevent premature aging of the cells. The drive cycle power profiles are repeated until 95% of the 1C discharge capacity at the respective temperature has been discharged from the cell 7. A series of 16 charges (charge 1-16) (..._Charge##.mat) store the cell charging before and after every drive cycle starting with an inital top up before doing the Cap_1C test