We do not recommend splitting the power from the main MōVI battery.
The MōVI has an operating voltage of 14.8V-16.8V. Average current, depending on usage, is around 1A. Peak current is 10A.
If the MōVI experiences a high power draw due to a heavier load or more extreme movements (like running down stairs, etc....) or an accessory is using additional power, it could cause a low voltage shutdown of the system.
We recommend using a second battery to run your accessories. The power from this 2nd battery can be split to power multiple devices. Be sure to monitor the battery level using a lipo alarm or lipo checker. As the battery is built to be as lightweight as possible, it does not have built in safety circuitry and users must be careful to observe correct handling procedures.