But you’re starting off in the best possible part of the flight, when battery voltage is highest. A burst of power there has the least bad impact. Also, if you

But you’re starting off in the best possible part of the flight, when battery voltage is highest. A burst of power there has the least bad impact. Also, if you have a large battery, the amount of power you can afford for burst is extremely high. It’s also possible to have a battery optimized for high discharge assist the main battery, like a hybrid vehicle. But that’s unlikely for most battery chemistries which have plenty high C-rate that a secondary power-optimized battery is totally unnecessary.