Just found this dual USB charger plus voltmeter. I've got an 12V 80AH battery on the front of my QS6. Could be nice to always know how much battery life I've got left.
http://www.amazon.com/Charger-Voltmeter-Jumper-Motorcycle-tplt/dp/B00LDSZQOI/ref=pd_sbs_misc_5?ie=UTF8&refRID=1ZGZDXFW0T09G4V8QSG5
http://www.amazon.com/Charger-Voltmeter-Jumper-Motorcycle-tplt/dp/B00LDSZQOI/ref=pd_sbs_misc_5?ie=UTF8&refRID=1ZGZDXFW0T09G4V8QSG5
