The light is a little too bright for our tastes at its default setting, reflecting off our TV screen in the dark; thankfully, you can change it from the original Bright setting, down to Medium or Dim by simply holding down the PS button on the controller and select Adjust Devices.
It has a built-in 800mAh battery that charges over a micro USB connection. It's very convenient but it's limited battery life of around eight hours means you'll want to leave on charge whenever you're not playing. Thankfully you can set the PS4's USB port to output power for 3 hours after the console goes into its Rest Mode, which is enough to get your controllers fully charged.