Anomalous charging behaviour :- a) plug in discharged battery b) starts off with the yellow light flashing as usual c) after a very short time the lamp goes off completely - instead of staying on without flashing as it is supposed to do when the battery is charged. d This happens with two differnt batteries, believed to be OK. e) Disconnecting and re-connecting the battery induces the light to flash for another short period.- It then goes off again. f) This can be repeated several times. g) The camera indicator appears to show the battery as full, but I suspect this may not be the case. ***** Do you reckon the charger is really getting over the hill or is it perhaps just a failure of the lamp control circuit? Regards, Philip Minchom

The flashing green indicator is telling you (and the notebook) that the battery is almost fully charged, but then by switching immediately to flashing orange, the status has changed to "battery charge is low". This is not normal behaviour and probably indicates a serious issue with the battery. My guess is that the charging is initiating some kind of rapid battery self-discharge.
Ref - Knowledge Base

Notebooks will power up and work without a battery just fine.
Ref - Laptop Battery Basics dummies
Try to operate yours this way. This will eliminate the battery from the loop as a potential cause of the BSODs you are seeing.

If the laptop battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. Rechargeable batteries will fail if stored in a discharged state for long periods.

If the rechargeable battery is more than 3 - 4 years old then the battery could be worn out. Rechargeable batteries have a finite number of charge and discharge cycles and will lose their charge capacity over time, i.e. won't charge to 100% and gradually the charge reduces until the battery won't charge up at all. OR The battery shows a 100% charge but when the adapter is disconnected the battery drops off to zero capacity in a very short time. If the battery drops to an unacceptable charge level then the battery needs to be replaced. Rechargeable batteries will fail if stored in a discharged state for long periods.

Hi,

The yellow light means that there still is an amount of charge on the battery, meaning that it isn't fully discharged. The red light means that it is partly discharged and you can charge it up.

Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

Handie Andie

If Roomba senses that its battery has been significantly discharged, Roomba will enter a special 16-hour refresh charge cycle. When the 16-hour refresh charge is initiated, the CLEAN light will quickly pulse red/amber. Do not interrupt the cycle once it has begun. The 16-hour refresh charge cycle is initiated by the robot and cannot be started manually.
For long-term storage, always remove the battery from Roomba and store in a cool, dry place. Blue or black batteries should be stored after Roomba has been used. Yellow batteries should be stored after being fully charged.
Battery capacity reduces overtime and usually the battery will need to be replaced each year.

According to the owners manual for these swimming pool lights, this is what each colored indicator means. Hope this helps.


Solid green
The battery pack is fully charged.
Slow flashing green
The battery pack is almost fully charged.
Slow flashing yellow
The battery pack is half charged.
Medium flashing yellow
The battery pack is less than half charged.
Fast flashing yellow
The battery pack has almost no charge.
Fast flashing red
A charging error has occurred and the light should be unplugged and then plugged back in. If the Fast Flashing Red persists after several attempts, the battery condition is questionable.



Also in the trouble shooting guide, it mentions this:


Problem: Red Indicator Light Is Flashing While Charging

Solution:
A red flashing indicator light when charging indicates a selftest
error condition. Unplug the product and plug it in again.
Try this several times; if the indicator light continues to flash
red, unplug the GlowBuoy and take it to an authorized service
depot.

I have the same problem. What I have found with mine is that if I can get the battery to take just a little charge then I can get it up and running. Here is how I do it. Disconnect AC power leave the battery in and start the laptop. As soon as thing start to run I plug the AC back in and it works fine from there on. Now mine is flashing as well now and I have a dead battery and it will not restart. Something I have noticed thought is it appears that the yellow light is blinking a code. This is what I have come up with. I appears to be flashing 323 as the code or could be 2 shorts 1 long then 2 shorts and then 3 shorts.

Anyone know where to find info on these flashing codes.

Thanks

Some of The Canon Powershot A530 and A540 cameras are subject to a advisory recall. Seems that a small spring on the battery compartment door can short out the batteries. Suspect this of yours, in that you mention that your batteries aren't lasting long. If your camera is on the list, Canon should fix this for you for free, including free shipping both ways. This is regardless of your camera's warranty status. Please check the following two links for more info:

http://camerarepair.blogspot.com/2007/12/canon-a530-a540-with-short-battery-life.html