From: Mike Dee <miked...@gmail.com>, Mon, 22 Feb 2016 06:22:05 -0800 > contacts that electrically connect the battery to the > laptop.* Dried green crystals have been spotted around the connector > ... contacts that electrically connect the battery to the > laptop.* Dried green crystals have been spotted around the connector ...
No sign of corrosion anywhere in or on the machine. > *Perform an XO Full Reset <http://wiki.laptop.org/go/XO_Full_Reset>.* No problem there. Brief orange flash is as described. > *Disconnect the battery, and connect the laptop to AC power*. Now turn on > the laptop. After the system has loaded, insert the battery. > *Does the battery LED start flashing red?* No. Just steady yellow indicating charging. > *Does the battery LED start flashing yellow?* Just steady yellow. Within about 40 minutes, mousing over the battery icon at the top of the screen shows 100% charge. The battery light remains yellow for another 20 or so minutes. Then changes to green. > Now > disconnect AC power and discharge the battery while the system is running, > keeping an eye on the percentage charge. > > *Does the system shut down abruptly with over 10% of charge remaining?* If Probably about 30%. Will do it again this weekend to verify the previous observation. > Capacity test OK, thanks. From: James Cameron <qu...@laptop.org>, Tue, 23 Feb 2016 06:18:55 +1100 > If a couple of full charge and discharge cycles don't fix the > inconsistency, the battery is close to end of usable life. > > I agree with Paul that power-logs will be useful if Peter wants to > dive deeper into the technical causes. Will continue with the tests and tips. A battery specialty shop here in Vancouver made a nice job of rebuilding a battery pack from an Epson HX-20. Might let them have a go at this battery. If necessary will find a new replacement. These machines are superbly durable. The battery pack will be the first failure in most. A modular battery with a "standard" connector might be considered in a future design. Recently I was given a Duracell cylinder about 2 cm diameter with USB sockets on the end. Should run many of little FPGA based machines. Thanks! ... Peter E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789 12 Tel +1 360 639 0202 http://easthope.ca/Peter.html Bcc: peter at easthope. ca _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
