Hi, I've chosen to get a Bfang 250w direct drive motor (BBS01), but haven't chosen the battery.
http://www.greenbikekit.com/lithium-battery/li-ion/36v-145ah-panasonic-ebike-downtube-batteries.html
http://www.greenbikekit.com/lithium-battery/li-ion/36v-15ah-samsung-frame-battery-with-usb-charging-output.html
Would either of these be a good option, and how do I choose between them?
http://www.greenbikekit.com/lithium-battery/li-ion/36v-145ah-panasonic-ebike-downtube-batteries.html
http://www.greenbikekit.com/lithium-battery/li-ion/36v-15ah-samsung-frame-battery-with-usb-charging-output.html
Would either of these be a good option, and how do I choose between them?