Epson 500 Series - Manual (Page 43)

C a u t i o n
When your battery can no longer be recharged, please cannot
your local government agency responsible for hazardous waste
disposal. NiCad and NiMH batteries are considered hazardous
waste and should be recycled or disposed of properly.
Low Battery Indicator
When the battery's power is getting low, the low battery light
starts flashing and the computer starts beeping. At this point,
replace it with a fully charged battery or connect the AC adapter.
You need to recharge the battery (as described above) before you
can use it again to power the computer without the AC adapter.
If your AC adapter is not available, follow these steps:
1. Complete your current activity.
2. Save your data.
3. Exit the program you are using.
4. Turn off the computer.
Once your computer starts beeping, you have approximately two
minutes to save your data. If the batteries run out suddenly, you
will lose any data you have not saved.
Turn off computer before replacing the battery pack.
Otherwise, you will lose data and you may even damage the
computer.
3-6 Powering the Computer