FPV means is “First Person View” which means a video camera is mounted on the FPV and broadcasts the live video to the pilot on the ground so the pilot is flying the aircraft as if he/she was onboard the aircraft to be much closer to the real view instead of looking at the craft from the pilot’s actual ground position. FPV allows you to fly much higher and further than you can from the looking at the aircraft from the ground.  FPV control allows for more precise flying around obstacles especially with vehicles like quad-copters which can easily fly indoors and through forests via FPV where you wouldn’t be able to see obstacles from a fixed position.

 Graphene packs use carbon in the battery structure to form a single layer of graphene just 0.335nm thick, making that type of battery substrate the thinnest known to mankind. The graphene particles form a highly dense compound allowing electrons to flow with less resistance compared to traditional Lithium Polymer battery technologies. The result in maintaining greater power output whilst keeping much cooler under load. As heat and resistance are the natural enemy of batteries Graphene chemistry has significantly reduced such issues and results in an incredible boost in life span. 

Remark: Graphene LiPo Batteries only require a plain Lipo battery charger.
Advantages over traditional Lithium Polymer batteries.

• Energy density: 0.13KW/kg-0.15kw/kg (for small size LiPO).
• Fast charge capable, up to 15C.
• Stable high pack voltage through duration of use.
• High discharge rate, capable of supplying more power under load.
• Higher capacity during high rate discharge.
• Very low IR (Internal Resistance), as low as 1.2mΩ compared to that of 3mΩ of regular RC LiPO battery. 
• Greater thermal control, battery pack stays much cooler under extreme conditions.
• Remains higher pack capacity even after hundreds of cycles.
• Longer lifespan (over 900 cycles).