Battery charging problems

The behavior you describe is a camera connected to a computer and it changes WHILE the computer sees the camera and it is ON (computer). When you shut down the Computer it will blink rapidly and it will not charge. if you charge with POWER ADAPTER. It will only BLINK while it charges. When it STOPS blinking it is FULLY charged.

As soon as you connect your iPad to a working charger, it will beep. If you plug in the cable and you don't hear the beep, assume something is wrong. Just find out what, the cable or the charger.
Don't try to charge the iPad with a computer, because the 500 mA a USB connector from a computer can give, is not enough even to start.
But you can use a computer to test the cable, because the iPad should beep and say on the screen not charging.
If there is no beep when connecting to a computer, you have to use another cable. If it beeps, buy a new charger. 5 Volt 2 A. The best an Apple charger.

Change battery , not change battery the unit will not operate if there is a power failure.backup operation. 5 years is a long time on a disposable battery.

There is a solder problem on some units. Remove the battery and the 4 screws, tilt the lower panel away, and let the circuit board drop out onto the workbench. WATCH FOR THE TRANSFORMER, it is not fastened. Inspect for a loose solder connection, and if you find it, re-flow the solder. Re-assemble and plug into the AC current to charge the battery.

Assuming you are trying to charge the Nokia via the computer? First off, the best way to charge is using the direct method with a wall based transformer. That device comes with your phone and plugs into the wall socket. The Power (Amps/Voltage) emitted from the charging device is directly proportional to the phone battery and thus you have an apple to apple and not an apple to a peach, so to speak. Rather than mess with the current battery, I would get a replacement battery of the same value, and start fresh. Batteries are no expensive and do not last a very longtime, so try that first.

I think I had the same problem. You do not write if your device were connected to the PC. My device was, and I finally got the suspicision, that it died because the battery was so low, that it crashed when the PC polled it as an usb unit.
So, I connected the unit directly to the charger unit that came with the unit, and now it works. So, try to connect directly to your charger, when your battery is totally drained.

ups charged for 8 hrs .No alarms but on powerfail no output to connected device

Sounds like you both have a battery problem. I experienced a similar problem when trying to charge via the USB-cable connected to my computer.
Ended up buying an original charger (expensive) and the charging went smooth.
The car charger should in any case work fine, so probably your battery is not very healthy.

Try holding your finger on the battery symbol for about 10 sec. The unit will then switch to a technical page. There you can observe the battery and charging voltage. When I plug in my computer USB-cable, I read around 4,4V and that is not sufficient for charging my battery.
When connected to the original charger, this voltage rises to about 5V which gives a nice charge. When unplugging charger, the unit displays the battery capacity. If the charging voltage is OK, but battery capacity drops quickly after you unplug charger cable, the battery is probably bad. (Of course you have to charge is for some time) I think around 4V battery voltage give 100% capacity. 3,9V gives about 90% capacity.
This will not solve your problem, but can give you an idea about what is wrong.
Good luck.

The battery is shot and needs replacing.

Hi
I think you problem is from the power adapter. It's not working properly.Sometime you have the electricity sometime not.So you laptop switch between AC or DC(battery),that's why you laptop beep.The problem can also be from the power connecter on your laptop.Best is to try to change the adapter and see the result first.
goodbye,takecare