I know there are numerous threads talking about car charging solutions, I know that they're out there and the options are endless. However, with these batteries being so expensive, and our drones being expensive, I'm hesitant to use anything other than the DJI stock car charger (Buy Phantom 3 - Car Charger Kit | DJI Store) but I really don't like that price. I've gone through the threads here and narrowed down to these options: http://www.amazon.com/BESTEK-Power-...&redirect=true&ref_=oh_aui_detailpage_o05_s00 Amazon.com: BESTEK 300W Dual 110V AC Outlets Power Inverter DC 12V to 110V AC Car Adapter with 3.1A Dual USB Charging Ports for Laptop, Smartphones and Tablets: Car Electronics My question is, what exactly am I looking for to know whether or not I'm buying the correct device that will not harm/damage my phantom battery? Do I need to check the volts, watts, my car's cigarette lighter? I'm not an electrician--hence this post. Simply put, I want an affordable car charging solution that will not ruin my batteries and/or kill my bird; I know nothing about electricity and car batteries. Please advise.