Re: Cyberpower BNT-600AP UPS



I'm not sure that micro-controller is not issue. At this point i think that reading of battery level are wrong.
I ordered few components that are in my opinion problematic, and i will check.

Thank you.....

Re: Cyberpower BNT-600AP UPS



1. No. That is all that i have. Except transformer everything else is at schematic.
2. I have to double-check, but i think that i had 13.7V
3. Yes. Tested.
4. I have to check.
5. Please can you explain in your opinion why is strangely connected?

Thank you.....

Hello everybody.
I have very interesting issue. Six months ago I have replaced battery in Cyberpower BNT-600AP UPS and everything was working OK. Few days ago i noticed that UPS won't hold when is switched to battery mode.
What I was noticed that I have open device is that C18 was bad. I have replace it, but i still have same issue..

I have tested battery, and it is OK. I have used another one with same result. IN the end i used DC power, and with 12V i have exact same behavior as with battery. When i change voltage to 13V, UPS can hold low power device (up to 5W).....

Re: New Members - please post your introductions here

Hello to everyone.
I'm here because I like repairing electronics as a hobby.