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spaghettiwestern@sh.itjust.works ⁨23⁩ ⁨hours⁩ ago

After having my server fail to recover after a power failure while I was out of town for an extended period I moved all important server apps to an relatively inexpensive laptop.

The battery is firmware limited to a 70% charge which means it will last for years with no significant safety concerns. Even at a partial charge, Debian indicates 7 hours of run time when the power fails (I’ve had none longer than 4), and it’s unaffected by power blinks. It saves a bit of electricity too and costs $150 less per year to run than my old UPS alone.

Ir’s been running for nearly 2 years without a hitch.

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Shimitar@downonthestreet.eu ⁨15⁩ ⁨hours⁩ ago
Check periodically for bulging batteries, you might have to remove the back cover to detect such a condition depending on model.

I used to run a laptop as well but I have had batteries die like that twice, and that’s a fire concern as well specially if you have it stored away in a closed and never physically check it.

Keeping charge at 70% doesn’t help, you need to powercycle the battery regularly to prevent batteries to die on you

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- spaghettiwestern@sh.itjust.works ⁨13⁩ ⁨hours⁩ ago
  
  Similar to a mechanical device that wears out faster with heavy use, the depth of discharge (DoD) determines the cycle count of the battery. The smaller the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life. - batteryuniversity.com/…/bu-808-how-to-prolong-lit…
  
  Your chance of being struck by lightning in the course of a lifetime is about 1 in 13,000. Lithium-ion batteries have a failure rate that is less than one in a million. The failure rate of a quality Li-ion cell is better than 1 in 10 million. batteryuniversity.com/…/bu-304a-safety-concerns-w…
  
  Battery swelling (not caused by manufacturing defects) is primarily caused by overcharging, deep-discharge, physical damage, and heat, none of which are problems for my server installation.
  
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  - Shimitar@downonthestreet.eu ⁨10⁩ ⁨hours⁩ ago
    Ok, i stand corrected
    
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