MickeyAO
Well-known member
- First Name
- Mickey
- Joined
- Apr 2, 2020
- Threads
- 26
- Messages
- 1,050
- Reaction score
- 2,094
- Location
- San Antonio Tx
- Vehicles
- Rapid Red Lightning Lariat ER, Kia EV6 GT-Line AWD
- Occupation
- Retired Lab Manager of the Energy Storage Technology Center
I would beg to disagree with the 'impossible' part of your statement...I regularly discharge cells to -4.2V (yes, negative voltage which is hard to do but we have a method to meet the standard) and more than 6 V while testing to the SAE J2464 standards.It's impossible to discharge a lithium chemistry below a certain voltage (depending upon the chemistry … I don't purport to have a table of all these numbers memorized, I'd just google it and compare nmc with lfp, etc.) and impossible to charge above a certain voltage … approaching those limits defines the performance envelope of the pack (complicated by ambient temperature and cooling system performance.)
As long as the BMS is operating normally, it should be impossible for YOU to do these things with normal operating conditions and equipment.
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