This advanced bike trick is brought to you by Australian triathlon coach Graeme Turner, of Fit2Tri
These modifications could void the warranty on all components in the DI2 Group Set. These modifications involve fine soldering – do not attempt unless you are confident in completing these steps.
The Shimano DI2 is rated at 7.4 volts / 500mAh. This voltage is a common voltage for items such as radio control cars and video cameras. Amperage higher than 500mAh can be safely used – it will in fact give much longer battery life between recharges than the standard battery.