RC ERA C180 Battery 7.4V 1200mAh

The Positives:

Extremely convenient .
Charging circuit and battery management built in.
Press one button to see state of charge represented through LEDs.
Streamlined modular design that helps protect LiPo battery.
10-12 minutes flight time on the C-180, BO-105.

The Neutrals:

Proprietary design that will fit only one model.
Difficult to read battery voltage with a meter due to recessed contacts.
No easy way to bring battery to storage voltage.

I purchased two more batteries for my C180. More batteries equals more flight time. I average about 9-10 minutes of flight time per battery.