Extend your Smartphone battery with low power mode !!

"Your battery is at a low rate, and you're no where almost a charger. Try not to freeze right now. In the event that your telephone is running on iOS9, go to Settings > Battery > Low Power Mode. (Siri can do this for you as well.) By going into Low Power Mode, trivial assignments are crippled, surrendering you to FOUR more long periods of battery life."