Help... APC CS 650 model, orange light always on

[Anonymous user]

Good day to all,

Anybody pls help me with my problem with APC CS650 model.
Only the orange light is always on and nothing else,

when i tried to check for the voltage output {the battery backup outlet at the back}, it only has a very low power detected on the multi tester.
about 40volts or lower.

pls help me with this..

Good day and God bless to all

[Anonymous user]

Hi Manix,

There should be a label on the LCD, please tell us what is indicated? Does it have audible alarm when it is lit?Are the loads connected to the UPS dropped when the LED is lit?

If you can provide us more detailed information about the UPS, that will be great!

[Anonymous user · Accepted solution]

no audible alarm heard, even if its not plugged in the main outlet {220vots} , the ON BATTERY {orange light} INDICATOR is always light steadily, even if there's no loads on the UPS outlet were connected.

can you help me with this sir?

[Anonymous user]

Hi Manix,

Can you provide me the exact model number of the unit from a small sticker with barcode?

[Anonymous user]

Good day sir,


here's what you have requested..

BK650-AS

tnx...

[Anonymous user · Accepted solution]

Hi Manix,

Please follow the procedure on this kbase. We will try to de-energize the excess voltage from the circuit of the UPS and see what happens when you turn it on.

Fluctuation or distortion on the power flowing from the wall outlet can also be a cause to UPS to stay on battery.

I would suggest you to attach the UPS to a different wall outlet which is connected on a different service panel and see if UPS will stay on battery.You also have an option to adjust the sensitivity either manually or through the software. Installing the software can give you better monitoring of the UPS as well as with the quality of the power that's fed to it.

Please let us know the outcome

[Anonymous user]

Good day sir,

Is there a schematic diagram of this model? maybe i can trace the problem and might help anybody here with the same problem..

Good day and God Bless

[Anonymous user]

Good day sir,


I just did the brain drain procedure on the kbase site, and reconnected the battery again { plugged to another wall outlet}, still the orange light indicator lights steady .

and when i i tried to check the voltage output at the back of the UPS, tha rating voltage is 140 volts.

Any idea sir?


Good day and God Bless

manix of Philippines

[Anonymous user]

Hi Manix,

Good day!

BK650-AS is an ASEAN unit which is rated 230VAC. So I am confused when you said it's 140V. Well the unit will switch to battery power when it doesnt see the correct voltage required, or if there's dirty power coming from the wall outlet. I would say, the input voltage should match the voltage rating of the unit for it to get back to online mode.

Regarding schematics you may refer to this kbase. Should you have any further question, please let us know.

By the way, it's ma'am. 😃

[Anonymous user]

hello maam,

i checked the wall outlet and its 220volts and see no problem about it.

but when i check the output voltage of the UPS it only have 140volts and still orange led lights steady.

Good day and God Bless...

[Anonymous user]

Hi Manix,

Can you provide me the serial number of this UPS (in pivate)? Do you have software to monitor this UPS? If you have used different wall outlet and you have a good input power, from the software, you have tried different sensitivity settings and still doing the same thing. I would guess UPS is faulty.

[Anonymous user · Accepted solution]

same problem here just change your battery pack and it will be ok