I went for a great ride on Saturday afternoon. Even thou temps were running in the upper 90's with 90% humidity the bike never got hotter than 210 in traffic and while riding hovered around 180'ish. Me on the other hand was boiling! I decided to get a Feher ACS-1 Helmet. My concern is can the charging/battery system handle having the helmet plugged in and also having a USB plug to keep my phone charged? From what I read the Helmet can run off a 3000mah battery for 2 hours so I am going to guess that the helmet will pull 1.5amp an hour? The Battery tender USB connection is rated at 5v/2.1amp. Will these two at the same time cause a problem? Don't want to fry anything when connecting them both but I had a 99 Shadow Aero 1100 with a 35 watt HID bulb, 35 watt dual highway lights and ran a Shark stereo with 4 speakers and never had a problem.