Included is a Shimano BM-E8031-A Battery Mount modified to work with a Range Extender battery.
Allows connection of a 36v Range extender battery.
Installation and shipping charges not included In Kit Prices
Fitment Varies per bike depending on size of triangle
Batteries can not be used alone, They are used in conjunction with the main battery to provide an increased range.
Inquire directly to discuss options and fitment locations for you bike.
DIY Fitment is possible, However Motor needs to be dropped and two wires soldered together to complete fitment.
Cannot be used individually must be used in conjunction with the internal Shimano battery