Epson ActionNote - Manual (Page 108)

6. If you have not used a battery in a long time (three months
or more), you may need to recharge it.
7. If you find that over time the battery is losing its charge in
less and less time, it may be reaching the end of its life. You
may need to replace it with a new battery.
AC Adapter Problems
If the computer does not work properly when the AC adapter
is connected, check the power light on the adapter. If it is on,
the AC adapter is working and supplying power to the
computer. If it is not on, follow these steps to find the problem:
1. Remove any diskette from the diskette drive and turn off the
computer. Disconnect the AC adapter and then reconnect it.
Then turn the computer back on. If the power light is still
off, go to step 2.
2. Check the connections: make sure the AC adapter cable is
securely connected to the computer and that the power
cable is properly connected to both the AC adapter and an
electrical outlet.
3. If the connections are good, then check the electrical outlet
to make sure it is supplying power. (For example, plug a
portable lamp into the socket and turn it on.) If the outlet is
working and the connections are secure, there may be
something wrong with your adapter.
Caution
Use only the AC adapter (model number AP-006) supplied
with the computer.
Troubleshooting A-5