inputs.text: good means attaching - expected couple light wanted one red red commuter bikei good means attaching using rubber closure works good light move little riding sometimesi use flashing light see ok want seen drivers use steady low power time riding darkness good enough might use high power raining mountain bike would use high power riding unlit singletrack trail nighti prefer bringyourown usb power source approach lights include battery pack proprietary nonusb connectors always microusb miniusb cable charger around charge usb battery packwith 10000 mah power source light lasts several hours week two worth night rides backup along moment battery runs juice also notice one power pack light runs perfectly 2a port not work 1a port perhaps take consideration choosing usb power sourceuse one puts least 2a like ones charge ipad powerhungry tablei think one important aspect lights good place stash usb power source small handlebar bag like one one good solution another good approach many bikes although prefer version multitool compartment top two sides bag