PicoSystem short battery life

New hardware. Two recharging cycles. It looks like the battery life is pretty short - something around 1h+.
The build-in game was played.

Any hints?

I wonder how did you achieve 6 hour battery lifespan?

  • what was the MCU clock - either 133 or 250Mhz
  • what was the backlight PWM ratio?
  • any other optimization trick used?