Mood, but Iām asking for more metal.
These are my goals:
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Briareos, Appleseedā¦ I love this manga 
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Looks more like an offer or challenge rather than measurement
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Is that 3 Milfs for 4 minutes each or combinedā¦asking for a friend
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Asking for myself, I need to know
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Massive storms rolled thru today, currently sitting in the dark
Being nocturnal is less fun without electricity :-/
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Cyborgs and power outages donāt mix very well.
I hope that they fix the problem soon!
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massive storms, floodingā¦ wildfiresā¦ woke up this morning with the worst wildfire smokeā¦ headacheā¦ eyes burningā¦ lungs irritatedā¦ nobody is happy.
weāre living in a climate change catastrophe 
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Thatās part of the reason there are UPSs scattered around my house. I also keep flashlights in easy to reach locations.
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I have a prepper streak, so Iām not totally hosedā¦ just bored
Need to get a proper generator, but currently using my lawn equipment batteries with a large inverter station that takes them all, itās pretty good for 12-24 hours of room amenities such as fan lights wifeās cpap etc
But I need more amps longer term for something like appliances
This has me thinking, because the only thing I actually worry about is sump pump, house I grew up in has left me with sump pump ptsd
We have a battery back up pump, with a deep cycle batteryā¦ fairly nice system, but itās lacking something to put me at easeā¦. No battery gauge
I understand run time will be based on duty cycle, which will depend on how much rain we got or environmental conditions
But I currently have no indication how far I am away from a dead battery,
Iāve seen cheap little standalone 12v dc voltmeters and also a little golf cart battery version with an alarm
But Iām left with the missing value, of whatās the lowest voltage the sump pump battery will run at?
I could read the label but I expect it will just say what the pump āis designed forā not what it will run at
Thoughts?
Sadly accurateā¦
Itās also weird every time I see an article about an area in Florida I live close to on national news because I can see pictures on the article and go āI was there last weekā¦ah shitā
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I donāt often have those things swimming around in my headā¦
Take all of this with a grain of salt because Iāve never needed to use or even touch a sump pump in my area, butā¦
- Do you have the ability to measure the batteries output with a multimeter/voltmeter?
- Do you have the ability to keep the pump on so it doesnāt automatically shut down? (unless keeping it running when not needed damages it obviously)
- Is there any sort of indicator where you can tell it is offline/on battery/on mains power?
You could possibly set it to run off the battery and monitor it over time and take a measurement at when it shuts down. Is there any sort of indicator for when the pump is offline?
Or, for a much simpler route, if you have the batteryās capacity and specifications, you could find out how long the battery lasts by checking online for the batteryās model number / manual / product sheet. Some companies offer ranges for how long a battery can last depending on how much power is being sucked out of it (a lot of UPS systems usually have a graph, based off my experience with enthusiast computer stuff).
@Pilgrimsmaster, any 3D printing icon in the works?
not a problem.
I have an idea of what to look for (Print nozzle extruding in gif format) but not sure how it will translate on such a small scale.
Do you have a suggestion?
Thoughts?
Ill remove the background, and probably change to a grey scale.
I might make a couple of frames and make it a .gifā¦weāll see
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I have access to the battery, itās off on the side in a battery box, essentially a car battery but itās a fee cycle so itās better designed for deeper discharges without damaging the battery
Itās hooked up to essentially a trickle charger and when power goes out it auto switches over to the battery
I have very easy access to the terminals, to attach a voltmeter of some sort, but the problem will remain āhow low is too lowā
Yes and no, its designed for intermittent duty cycles so Iām sure running continuously wouldnāt be good for it
I do have a manual / test pump momentary button
Yep a nice little control unit, that when itās on battery or detects the main pump failed
(Battery powers second pump only, that is set to a higher activation point, so it backs up main pump failure or power outage simultaneously)
Screechās like hell when something isnāt right, which is admittedly usefulā¦ and I thank the cyber gods someone was considerate enough to put a switch on the front panel to silence the alarm (imagine 3 days of a smoke alarm going off 
)
It just doesnāt tell me anything about battery voltage or capacity
Batteries are interestingā¦ There are lots of tests you can do but only one that gives you a snapshot of the batteryās health. The kicker is, you need to do them from the point you get battery. Also, you need a very specialized tool to measure the batteries conductance. All the other measurements involve actually discharging the battery which contributes to aging it.
All of that comes with the disclaimer that I donāt know everything but I did work as a DC power technician on a variety of (mostly large) battery backups.
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Most lead acid batteries are considered āDeadā at 10.5 ~ 11.0 volts. You can pull more out, but youāre doing more and more damage the further you go. Best not to go below that.
Full charge is around 12.6 volts.
So 100% is 12.6 and 0% is 11.0
You should be able to work out a āpercent of chargeā scale by mapping those vaues to voltages.
If you want to be very specific about your particular battery, you can probably look it up by itās manufacturer and get exact full charge / full discharge voltages.
Sometimes itās even printed right on top.
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