In my experiments, I found that using the 8 setting with a Lipo battery is the same speed as a 10 setting with Lead Acid batteries ! That extra 13.3 bolts from the LifePo4 is actually making the trolling motor overpowered and overheating from to much volts. I have jumped my 12v MK up to the 10 max speed on a few occasions but didn't leave it there very long. So far no issues, but the 8 setting gave me the same speed as a 10 setting with LA batteries so your not losing any speed !