iCELL is a lithium polymer (LiPO) battery monitoring system over bluetooth low energy (Bluetooth 4.0) technology.
iCELL hardware is a small electronic device with 8 cell battery reading capability and you can easily connect it to balance port of your LiPO battery to read battery voltage and cell conditions. This is life saving technology for aerial cinematographers and other RC hobbyists.
You can buy the iCELL hardwares from http://www.flytron.com