My Acer Travel Mate 332T have only 2hr battery run time. I
have successfully extended it to 5 with a Boost converter and a 7Ah 12V lead
acid battery.
This converter allows me to operate and charge with car
battery form 6-12V. The commercial product cost for hundreds but I make it just
around hundred.
A adjustable design allow circuit to be used in other
notebook with given connector. But I still can not buy the connector for my new
Fujitsu Notebook.