This is great intelligent battery, just what you need to keep flying an alert to let you know when to land and charge without a timer. With two pilot products the battery and charger the color changes when you are charged, so you are ready to fly again and again. Test is in the time it flies after a charge.

This is great intelligent battery, just what you need to keep flying an alert to let you know when to land and charge without a timer. With two pilot products the battery and charger the color changes when you are charged, so you are ready to fly again and again. Test is in the time it flies after a charge.

This is great intelligent battery, just what you need to keep flying an alert to let you know when to land and charge without a timer. With two pilot products the battery and charger the color changes when you are charged, so you are ready to fly again and again. Test is in the time it flies after a charge.

it's OK but expensive and the cost of the product is big.

it's OK but expensive and the cost of the product is big.

it's OK but expensive and the cost of the product is big.