1. It's not fun when you only have a battery to disposal and can fly just 10 minutes to recharge then half an hour.
2. I was looking for a longer anheltenden battery for Drone
Both points I could meet with this battery.
I have let the battery fully recharge once and then I just gone off with it. The drone launched and flew about 12 minutes.
After then the battery used several times (corresponding, and then reloaded) was the flight time prolonged more and more until I could finally fly in low wind almost 20 minutes. In strong winds, I came up with about 15!
The only drawback is that the battery indicator does not work sometimes. Sometimes she jumps down from the beginning to 20%, sometimes even 10%. That leaves the Drone will automatically land and they start again when the battery is briefly landed in the charging station!
Best not only land, but also make the flight in a train. Even so the battery indicator jumps around a lot with this battery.