Ideal Cell Resistance for the18650 battery cells / ORION 2
Posted: Wed Nov 01, 2023 2:40 am
Hi everybody. I was wondering if anyone had any thoughts on the ideal cell resistance settings at different temps for the 18650 style battery cells found in Tesla modules.
My DCL is being reduced due to Cell Resistance and Temperature.
Pack DCL shows 629 at 90% charge, which feels low to me.
Maximum Continuous Discharge Limit is set to 1,200A
Cell Settings in ORION 2
• -15C | 2.03 / 4.06 mOhm |
• -10C | 1.78 / 3.56 mOhm |
• -5C | 1.57 / 3.14 mOhm |
• 0C | 1.40 / 2.80 mOhm |
• 5C | 1.27 / 2.54 mOhm |
• 10C | 1.18 / 2.36 mOhm |
• 15C | 1.15 / 2.22 mOhm |
• 20C | 1.13 / 2.12 mOhm |
• 25C | 1.12 / 2.06 mOhm |
• 30C | 1.11 / 2.02 mOhm |
• 35C | 1.10 / 2.00 mOhm |
• 40C | 1.08 / 1.96 mOhm |
• 45C | 1.05 / 1.92 mOhm |
• 50C | 1.01 / 1.86 mOhm |
• 55C | 0.98 / 1.76 mOhm |
• 60C | 0.90 / 1.62 mOhm |
• 65C | 0.81 / 1.62 mOhm |
Temperature Derate Settings are 1000A Limit at each temp between -5 and 45C
Screenshot from Live Cell Data Thanks,
Jsimonkeller
My DCL is being reduced due to Cell Resistance and Temperature.
Pack DCL shows 629 at 90% charge, which feels low to me.
Maximum Continuous Discharge Limit is set to 1,200A
Cell Settings in ORION 2
• -15C | 2.03 / 4.06 mOhm |
• -10C | 1.78 / 3.56 mOhm |
• -5C | 1.57 / 3.14 mOhm |
• 0C | 1.40 / 2.80 mOhm |
• 5C | 1.27 / 2.54 mOhm |
• 10C | 1.18 / 2.36 mOhm |
• 15C | 1.15 / 2.22 mOhm |
• 20C | 1.13 / 2.12 mOhm |
• 25C | 1.12 / 2.06 mOhm |
• 30C | 1.11 / 2.02 mOhm |
• 35C | 1.10 / 2.00 mOhm |
• 40C | 1.08 / 1.96 mOhm |
• 45C | 1.05 / 1.92 mOhm |
• 50C | 1.01 / 1.86 mOhm |
• 55C | 0.98 / 1.76 mOhm |
• 60C | 0.90 / 1.62 mOhm |
• 65C | 0.81 / 1.62 mOhm |
Temperature Derate Settings are 1000A Limit at each temp between -5 and 45C
Screenshot from Live Cell Data Thanks,
Jsimonkeller