Join Date: Jul 2017
Location: Escondido, Caifornia ( 36 Miles north of San Diego )
A typical USB phone charger even with a lit LED will only draw about 14mA that would mean you would have to leave it plugged in and not run your bike for about 2 weeks for any noticeable drop in battery power. I leave mine in 24 / 7 and it has an LED on it that is on constantly ( looks like an alarm and night ), I have almost 13,000 miles on my bike and have never noticed or had a low battery. I ride my bike almost daily and have not let it sit without riding for more than 3 to 4 days.