UPS BX1100LI-MS error

[Kundoan]

My bx1100li-ms flashing replace battery led (red) and constant tone alarm when after i turn on about 20s, ups plug to ac outlet but when i unplug ac outlet or replug battery  it working fine, with no load. I was check status indicators in user manual but i wasn't seen error code like that. I need some help. Sr, my English not good. Thanks a lot.

[Teken]

Based on the information and video provided you need to replace the battery as a first step.

What kind / brand is this green battery?!? I hope it’s not one of those cheap Lithium batteries??

[Kundoan]

I has a another cyberpower ups and my battery working fine with it.

[Teken]

What happens if you use the Cyberpower battery inside the APC UPS?!?

You also didn’t answer my question relating to the type of battery chemistry in the video.

Is that battery a standard SLA or other like a lithium based cell?!?

[Kundoan]

It is a lithium cell battery. Cyberpower battery die so i can't try with apc ups

[Teken · Accepted solution]

You’ll probably find replacing the battery with an approved SLA battery will correct the problem.

These cheap lithium batteries do not provide enough current vs a SLA. You will also find out once the battery is drained the UPS won’t turn on or won’t charge the battery! ☝️

As the internal BCM will be in protection mode. Lastly, the charge / float voltage from the UPS is not designed for this specific battery chemistry.

One day you’re going to wake up to a house fire. 🤦‍♂️☹️

[Kundoan]

Thanks a lot. I buy new SLA battery and my ups working good. 🤣