UPS is electric device that used for store power to other electric devices.
For UPS 650VA, mostly it used for backup electricity to computer, small server, router or switch (IT devices).
After used a long time, battery in UPS will be failed. At this time, UPS can’t operate normally or can’t turn on.

My advice is that you should buy new UPS. However, if you don’t want to buy new, you can change new battery for UPS (if mainboard is good & no problem).
In this article & video as below, I will guide you: how to change new battery for UPS 650VA.

How to Do:
Please see detail guide video as below to change new battery for UPS:

As guide video, to replace new battery for UPS we have 5 steps:
Step 1: Remove screws on UPS plastic casing.
Step 2: Remove the plastic cover of the UPS. Unplug 2 wires (black & red) connection between mainboard & old battery.
Step 3: Remove old battery, replace by new battery (already prepared)
Step 4: Reinstall everything as it was at the beginning
Step 5: Check power, specification on new battery before start UPS. Finish.

Above is the whole battery replacement guide for UPS. If you have any questions, please comment below. We will discuss and give the best answer. Thank you everyone.

In addition, if you have any problems with your computer, please contact us directly through the QTitHow fanpage. We will try to help and answer you as soon as possible. Thank you!