Setting a whole new POWER standard.

EXTREME PRO chemistry was exclusively developed together with top Chinese battery manufacturer Fullymax to Overlanders demanding power and performance levels.
We are proud to take the EXTREME PRO range to a whole new level. New generation EXTREME PRO chemistry gives awesome power delivery, cycle life, and super-fast charge rate (Up to 6C), these properties never achieved by other Chinese, Japanese or Korean manufacturers. Overlander/Fullymax products are built using only the highest quality components and materials, sourced from Japan, Korea or Europe.
In 2010, Overlander Fullymax batteries took top honours at the British BMFA National Electric speed competitions, F5D and F5B.
Overlander EXTREME Lithium Polymer batteries were also used by most of the British F5D racing team in World Championships held in the USA.
EXTREME PRO, choice of Champions & the perfect choice for powering high-speed EDF, electric 3-D helicopters, and other high-power airplane applications.

All pack cells are fully matched 3 ways before assembly

Internal resistance
Voltage
Weight

• Please note Overlander packs come with supply leads bare ended to fit the connector of your choice.