When my cell phone gets low on power, it commits suicide. Unlike my laptop which goes into an power conserving mode, my cell phone starts using power as fast as it can.
Normally, my cell phone dims the screen after 5 second and then totally shuts off after 10 seconds. But not so when the power is low.
First, it powers up the screen and keeps it powered up at full intensity. Then, it starts beeping about every 30 seconds. All in all, it can delete a days worth of standby power in a matter of a couple of hours.
So, when my battery is about 60% charged, it needs to go back on the charger because it will soon start to commit suicide.