Server Fault Stack Exchange
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Questions tagged [battery]

50 questions
99
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2 answers

Smell of rotten eggs in the server room

A week ago I got the following error on my APC Smart-UPS 1000 which I muted. Warning State: Connect battery Load: 55% Batt: 100% Today, I could smell a sort of sulfur/sulphur/rotten egg smell when I came into the office and the UPS is alarming…
Andy Joiner
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21
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7 answers

Am I damaging my battery by never using it?

I have a MacBook Pro that stays plugged in for weeks or months at a time. Am I damaging my battery by not using it? I know you should cycle it monthly to recalibrate it...is that good enough? Should I just take the batter out and shelve it for a…
BigCanOfTuna
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14 answers

What is the lifespan of an typical UPS battery?

When using a uninterruptible power supply how long does it preserve the original capacity? Say I buy a UPS that holds the necessary load for 10 minutes - I don't want it to unexpectedly come into state when it dies 30 seconds after a blackout…
sharptooth
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15
votes
4 answers

Change the UPS battery while it's powered on?

Is it dangerous or not advisable to change the UPS battery while it is plugged in? We have an APC Smart-UPS 1500 and we need to replace its battery. I have the new battery but the UPS powers a few machines that I would rather not turn off for the…
Siim K
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14
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3 answers

Hardware RAID controller cache battery failure frequency/lifetime?

I'm in an environment that contains many Supermicro servers equipped with Adaptec and LSI MegaRAID hardware RAID controllers. These controllers contain battery-backed cache modules to help boost write performance and protect data in-transit. A…
ewwhite
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11
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3 answers

New UPS Batteries Dying in Months

This is something that has had me stumped for over a year. I have 3 APC SmartUPS 3000's and a few non APC units in my server room. Each unit has it's own dedicated connection to the breaker panel. It seems that I am having to replace the batteries…
TriadicTech
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10
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4 answers

How to recover the strength of a laptop battery?

I got a laptop, which I brought a year ago, which has a battery that can last for 3 hours. 6 months ago, the battery's life dropped down to roughly 15 minutes (Windows says its supposed to last for 30 minutes). When I tested it this week, its down…
MrValdez
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10
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4 answers

What purpose does the battery serve on a battery-backed caching RAID controller if the server is on an uninterruptible power supply?

Is the battery redundant if the server is on a properly-sized UPS? There is an option to force write-back mode and I want to understand the risk. It is my understanding that it helps against power failures while data in the cache has not been…
RPC
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7
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9 answers

Off-brand laptop batteries?

I tend to err on the side of paying too much for quality stuff, but $180 for a standard replacement battery for a Dell laptop makes the $80 knockoffs look pretty tempting. I wouldn't consider it (batteries really aren't something I want to take a…
Kara Marfia
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6
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1 answer

Smart Array P400 - Accelerator Replacement Battery Failure

TL;DR - Is the immediate failure of a replacement battery, for a failed battery, on a battery backed accelerator for a Smart Array P400 controller a common occurrence? Or are we likely to have an storage controller with an impending and critical…
inflammable
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6
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2 answers

Non-volatile cache RAID controllers: what kind of protection is there against NVCACHE failure?

The battery back-up (BBU) model: admin enables write-back cache with BBU writes are cached to the RAID controller's RAM (major performance benefit) the battery saves uncommitted and cached data in the event of a power loss (reliability) If I lose…
astrostl
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5
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3 answers

Dell Perc 5/i battery replacement - how long until it registers as good?

So I replaced the battery for my Dell Perc 5/i controller since the machine had an error code that it needed to be replaced. I ordered the battery directly from dell based on the service code and installed it without issue. In open manage it still…
Scott Szretter
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5
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1 answer

RAID supercapacitor only card (to replace BBU maintenance free)

An excellent article here: https://www.servethehome.com/raid-controller-batteries-time-bombs-you-need-to-replace/ Are RAID controller lithium-ion batteries ticking time bombs within your server? Over this past weekend, we saw an IBM ServeRAID…
morleyc
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3 answers

Considerations when buying a UPS Replacement Battery

According to a couple of my Smart UPS 3000s (Model DLA3000RM2U), it is time to replace the battery. Other than making sure I get the right battery for the particular model, are there any other things I should think about when buying the replacement…
Kyle Brandt
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3
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0 answers

Server not start in low battery (Network UPS Tools)

I have server (Centos 6.5 + nut-2.6.5 + Powercom BNT-600AP USB) everything works well, UPS picks up problems with electricity. When no electricity more than 10 minutes UPS shutdown the server, and turns the server when power is restored. When no…
Sanya Snex
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