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Hi everyone,
I just bought a brand new Eaton 5P1550iG2 (tower model) and I’m trying to figure out if the noise it makes is normal or if the unit might be defective.
Here’s what I’m experiencing:
Out of the box the battery was at ~90%.
I plugged it in and it took almost two full days to reach 100%.
On the first day I only heard the normal fan noise.
On the next day, the unit started producing a constant high-pitched coil whine / buzzing sound.
I measured it with a phone decibel app and it goes above 40 dB even at 0% load.
The UPS has not powered any devices yet — it has only been charging.
The fan runs continuously and never stops, even at 0% load in a cool room.
From what I know, the Eaton 5P series should be relatively quiet (around 30–35 dB) and shouldn’t produce coil whine, especially at no load.
So my questions are:
Thanks!
I just bought a brand new Eaton 5P1550iG2 (tower model) and I’m trying to figure out if the noise it makes is normal or if the unit might be defective.
Here’s what I’m experiencing:
Out of the box the battery was at ~90%.
I plugged it in and it took almost two full days to reach 100%.
On the first day I only heard the normal fan noise.
On the next day, the unit started producing a constant high-pitched coil whine / buzzing sound.
I measured it with a phone decibel app and it goes above 40 dB even at 0% load.
The UPS has not powered any devices yet — it has only been charging.
The fan runs continuously and never stops, even at 0% load in a cool room.
From what I know, the Eaton 5P series should be relatively quiet (around 30–35 dB) and shouldn’t produce coil whine, especially at no load.
So my questions are:
- Is coil whine common on the 5P1550iG2?
- Does the fan normally run 24/7 on these units?
- Does this sound like a defective inverter/inductor or something else?
- Should I return it?
Thanks!
