3sr+buyer
Active Member
For an NCA battery, it is likely that the optimal battery preservation charging method for daily use is something like:When the eventual day comes I decide to move on from this car, I will probably change my charging habits away from an "80% every day" strategy.
- Charge to finish shortly before you start driving.
- Set the target charge to B + D, where B is your safety buffer to avoid running out completely, and D is the amount you use that day. For example, if your B = 10% and D = 45%, set the target charge to 55%. If B + D < 50%, then set the target to 50%, since that is the lowest allowed.
For an LFP battery, the above should theoretically be optimal for battery preservation, but could run the risk of running out completely due to the BMS potentially getting inaccurate, and the lesser rate of capacity loss of LFP batteries makes it less necessary. However, if using the above method with an LFP battery, it is probably a good idea to use a significantly higher B value to reduce the risk of running out completely due to BMS inaccuracy, as well as occasionally charging to 100% to resync the BMS.