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Last night I have an interesting “event”. I accidently unplugged the PP from power line and did not know about it. In a couple hours I realized that the lights on my equipment that all time on are off. So, the PP buttery was drained out. Interesting, apparently the PP does not alarm that the buttery is about to be run out. This is a standard practice with all UPS devises, I am sure it has built in PP but presume the ASP disconnected the buzzer. Also, I wonder if the PP runs out of power gently and drop the load until it goes to let say 5% of full charge or it continue to discharge the buttery to absolute zero volts (wish is not good with Pb buttery). It is not that I am very concern but I would love to have that “5% of full charge” buzzer to blast off.

Also, that was very interesting: when I put the power cable back to power line then the first minutes the PP was hissing and screaming like crazy. I was presuming that it was completely drained buttery being violently charged, that is kind of odd as it shell have a current stabilizer. I do not know when it stopped – I went to sleep, but this morning the PP was back to it silent operation. It was a first time I ran PP into a deep discharge.

Maxzimum,

I have written many times about it. Read the thread. I do not use the PP load meter and have my own. If you are talking about noise then you need to be much more specific than that. Anyhow my unit has no noise that I would worry.

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