Future Android update will show how apps are draining your battery
The developer preview for Oreo 8.1 flags power-killing apps and tells you why.
Tesla Powerpacks will supply Nantucket’s backup power
The 48 megawatt-hour system will require over 200 Powerpacks.
Matrix PowerWatch hands-on: The promise of a world without chargers
Your body is this smartwatch’s power source.
The Nokia 2 is a very cheap Android phone with a huge battery
99 Euros for a smartphone that promises two days of use.
Wireless charging will make drones always ready to fly
A landing pad will charge nearly any drone with just a few modifications.
LG will build Europe's biggest EV battery factory next year
The electric vehicle revolution needs batteries to run.
Tesla envisions mobile EV battery swapping machines
They could swap batteries in 15 minutes.
Long range, low power sensors may lead to better health wearables
They could also improve farming and environmental data collection.
Apple's AR efforts will only work if the battery can keep up
Lessons from 'Pokemon Go.'