I would agree with you here. Even if someone tested it and a lower threshold value gave them enough runtime TODAY, that doesn't mean you'll still have enough runtime in the future when the batteries are a little older.Inxsible said:No I didn't do this because the default low battery level for my UPS is 20%. I think that's the default for all, but I could be wrong. I would change it only if you want to override the default low battery level to anything other than 20%. Going lower risks not cleanly shutting down all devices before the UPS loses all battery power depending on how many devices you have connected.
Also true. Every UPS I've seen uses lead-acid gel cell batteries, and one characteristic of lead-acid batteries is they lose a bit of their max capacity every time they're discharged.During my research I found that taking the UPS batteries that low in charge will kill the batteries much faster.