GitHub - rlogiacco/BatterySense: Arduino library to monitor battery consumption
Do batteries lose voltage as they're used up? - Quora
BU-204: How do Lithium Batteries Work? - Battery University
Are Expensive Batteries Worth the Extra Cost? | WIRED
Ben Krasnow: Testing Tenergy 9V NiMH batteries (discharge curve)
How do I know how much charge a battery has left? - Lifehacks Stack Exchange
9 Volt - Next Generation 9Volt | Ultralife Corporation
voltage regulator - Powering two circuits from a 9v battery - Electrical Engineering Stack Exchange
9 Volt - Next Generation 9Volt | Ultralife Corporation
How many mAh is a 9V alkaline battery? - Quora
9 volt transistor radio batteries in lithium thionyl chloride
AA alkaline discharge curve @5mA | AVR Freaks
9v 1200mAh Lithium Battery too good to be true? — Parallax Forums
9V battery - RightBattery.com
Batteries and Battery packs
Batteries and Battery packs
Rants from the Embedded Hardware Guy: Arduino Battery Monitor Part II
Function to describe alkaline battery voltage under constant current / load - Electrical Engineering Stack Exchange
Ultralife - 9Volt
Energy Density of 9V battery vs. AA batteries - Bald Engineer
9 volt transistor radio batteries in lithium thionyl chloride
Area under voltage vs time discharge curve - Electrical Engineering Stack Exchange
Discharge tests of Alkaline AA batteries 100mA to 2A
Area under voltage vs time discharge curve - Electrical Engineering Stack Exchange
