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Questions tagged [battery]

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how do I properly measure capacity of a UPS battery?

How can I properly measure the capacity of a UPS battery? Unplugging it from the wall is a bad idea since it loses the ground, so how can this be done?
krideo
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APC Smart-UPS with two battery sets: Regular switches or not?

I have a Smart-UPS 1500RM in a remote location with two battery packs. In order to maximize the lifetime of the battery packs, is it better to Use one pack until it dies and then hope that the other one is still good Switch between the two packs…
divB
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Removing low Battery Indicator in Ubuntu 20.04

I have recently installed Ubuntu on a mini pc with a zx8350 cpu. The installation recognizes the CPU as a laptop CPU and automatically displays the "low battery" indicator even though the machine is actually connected and powered by AC power. I…
Next Layer
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APC Smart-UPS 3000 turning off but passing own test

I have APC Smart-UPS 3000 at home which I got hand and apparently when the power goes down it just shuts down instead of switching to backup. Based on how it behaves I have reasons to believe is not the batteries. Apparently there is no service…
sorin
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Dell PowerEdge 2900 rom Batt

I have a Dell PowerEdge 2900. I got the the Raid Controller battery warning that it had less than 24 hrs left on it. I replaced it with a new battery. However, after a week, the orange light at the back is still flashing and I still get the same…
Carl-P
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LSI 2208 9286-8e MegaRAID controller beeping when connected to 24-bay NexentaSTOR JBOD enclosure

I am getting beeping from the LSI external RAID controller even if I properly shutdown and there is no array re-initialization. Would I be required to use a battery back (BBU) with the LSI controller if it's driving an external enclosure with an…
GregC
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Increasing occurrence of "BBU disabled" messages

Until recent my Intel RAID controller (SROMBSASMR) had a monthly occurrence of "BBU disabled: changing WB logical drives to WT", followed about 2 1/2 hours later by "Battery relearn complete". Since a little over 2 weeks "BBU disabled" started…
Erwin Blonk
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ups to give few minutes for about 20 PCs and 10 Printers

We've a problem in the electricity current for three months right now, I was tasked to get the best solution, and it should be cost effective also, for allowing our application users to save and shutdown their PCs, and complete the printing jobs…
Mustafa Magdy
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Optimise httpd/mysql for battery life

this is a bit of a weird one. Basically, I'm going to be on a 12 hour flight soon, and I'd like to know if I could tune Apache2 and MySQL 5.1 to use less CPU/RAM and thus less energy so I can conserve battery life for the flight? Performance-wise...…
bear
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Battery backup for Workstation & Printer

I have been tasked with finding a price for a battery backup solution for our printers. Each printer is listed at 240v 24a <5.5kW and each workstation is using a 500w power supply. We are probably going to add more batteries to our existing UPS to…
David Houde
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Can Smart Storage Battery disable access to server?

I have a Proliant DL360 Gen9 server that I have to restart every 5-7 days because I loose access to VMware and to all virtual machines. By this, I mean that I cannot SSH to the virtual machines or even ping the server, same happens with the web…
Storo
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How to replace NVRAM battery in BlueArc storage?

The RAID/NVRAM battery on a BlueArc Mercury storage host is located in the front of the storage head, and can be replaced without down time. From what I can gather, after battery change, I have to enter its Linux mode, and enter "something". Does…
Sandra
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Could the Input/Output or some other difference between adapters/chargers cause this?

I have a laptop and my adapter/charger could not be used anymore as the cable was cut. So I bought a new adapter but it was slightly different than the original. My original had (Toshiba's original): Input: 100-240V ~ 1.5A 50-60Hz Output:…
user76678
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Is there a software solution to plug off the laptop?

Is it possible to plug off the laptop by a command from the laptop, rather than by removing the adapter from power source? I am on Windows Seven, but I will also welcome any note regarding the existence of such command for some version of Linux. My…
Vahagn
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How to test a battery outside a UPS

I have an APC Back-UPS 550 that is showing a replace battery alarm (alternating red/green flashing LED with constant tone). The battery registers 12.7 volts on a multimeter when disconnected from the unit. This makes me question whether the…
zenzic
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