Extend the efficiency of your props by increased battery capacity. Extra large battery with capacity 3500 mAh. This option gives more light time for your props without charging.
For example, if the props originally have 2600 mAh battery and you want it to be upgraded to 3500 mAh, working time increases on 35%.
Attention: this is not an extra separate battery. This battery will be installed in your props instead of standard battery.