Use a known working AC mains lead and AC adapter of the same type
Connect the AC adapter to a mains wall socket that you know is working instead of a RM NoteBus
Switch the system on and check that the power icon at the bottom right of the system has a ‘mains plug’ symbol and that is says ‘On AC Power’ or ‘Charging’ when the pointer hovers over it
2) Check your power scheme configuration
Look at the Control Panel, Performance and Maintenance, Power Options and check that you have not set the ‘Running On Batteries’ settings to a short time (eg 15 minutes). This would cause the system to enter standby mode after being idle for 15 minutes. Similarly, if you have a ‘System hibernates’ option, check that this is not set for a short time. This may give the appearance that the battery is not lasting very long, but in fact the system is simply switching off after a set period of idleness.
3) Recalibrate the smart battery
Notebook and tablet PC batteries are usually the Smart Lithium-Ion type. They usually include a small micro-controller unit which can predict how long the battery is going to last. This prediction feature is necessary as without it, it would be very difficult to know when the battery is about to run out of charge.
If you consistently use the system for only an hour or so on the battery, and then connect it to the AC adaptor to recharge it, over the period of a few months the battery will ‘lose track’ of how much charge it really holds.
In this case it may report to Casement Replacement Windows that it is about to run out of power, when in fact the battery has plenty of charge left. Casement Replacement Windows will try to shut down if the battery reports low power and so your system may shut down prematurely, even though there is still charge remaining in the battery.
Battery calibration works by allowing the Smart battery micro-controller to re-calculate the length of time that a battery will last for. All you need to do is to ensure that the system goes from a fully charged state to a fully discharged state. This is done by simply ensuring the system stays on for as long as the battery will last.
Battery calibration does not extend the battery discharge time. This feature calibrates the battery so that it shows the remaining charge accurately.
The procedure is as the following
Check your Sony laptop is on AC power
Switch off your laptop PA2503 Battery
TOSHIBA PA2503U
Leave your laptop overnight (eight hours) to charge
Switch on your laptop and check that the system is still on AC power
In Control Panel, Performance and Maintenance, Power Options, and change the Power Scheme to Always On. Then change the ‘Running on Batteries’ settings to all say ‘Never’ and click on ‘OK’
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