Lipo powerbank

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whyme?
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Lipo powerbank

Post by whyme? »

Dunno if this is the right place but here goes.
I'm looking to put a wifi camera in our field & need a power supply.
The camera needs 5v <100mW. Lidl have on sale a Lipo Powerbank 10,000mAh with usb outlet so presumably 5v.
My question is :- will this work & how long can I expect the Powerbank to last?
My calcs say 0.1w/5v =0.02A =20 ma so camera should last 10,000/20 = 500 hrs assuming Lipo doesn't discharge below min. discharge voltage.
Problem is I'm 2 large whiskeys down & I'm sure my brain isn't functioning right as this seems an awfull long time. :lol:
Anyone care to put me right.

Spectre
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Re: Lipo powerbank

Post by Spectre »

I would get on a specialist site and ask the same question. Lot's of variables, particularly the camera.

Good luck.

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Fitter
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Re: Lipo powerbank

Post by Fitter »

whyme? wrote:
Tue Sep 15, 2020 8:28 pm
Dunno if this is the right place but here goes.
I'm looking to put a wifi camera in our field & need a power supply.
The camera needs 5v <100mW. Lidl have on sale a Lipo Powerbank 10,000mAh with usb outlet so presumably 5v.
My question is :- will this work & how long can I expect the Powerbank to last?
My calcs say 0.1w/5v =0.02A =20 ma so camera should last 10,000/20 = 500 hrs assuming Lipo doesn't discharge below min. discharge voltage.
Problem is I'm 2 large whiskeys down & I'm sure my brain isn't functioning right as this seems an awfull long time. :lol:
Anyone care to put me right.
Lets face it Vic it's only €16.99 - try it and see, if it goes flat quickly within the first week take it back and either swap it or get your money back.
If it's capacity is half of what Lidl say it is it's still a bargain!
It probably isn't waterproof to any extent so it will need putting under an upturned bucket etc.
“Never argue with a fool, onlookers may not be able to tell the difference.” ― Mark Twain

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RobertArthur
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Re: Lipo powerbank

Post by RobertArthur »

Whyme, what do you want to select: a low-energy camera or a huge extra battery? A review of several wifi camera's in this C│NET report. There is quite a difference between "always on" + IR and doing something only after being triggered by movement detection.

About this 100 mW power consumption: continuously or a maximum when taking pictures and sending information through the WiFi connection, so every now and then? Do the specifications of your (?) camera mention "stand-by power"?

whyme?
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Re: Lipo powerbank

Post by whyme? »

RobertArthur wrote:
Tue Sep 15, 2020 8:57 pm
Whyme, what do you want to select: a low-energy camera or a huge extra battery? A review of several wifi camera's in this C│NET report. There is quite a difference between "always on" + IR and doing something only after being triggered by movement detection.
I've already got the camera system which is a Chacon 34543 2 camera set up I bought to protect our stables & immediate environ. The cameras work off a mains voltage adaptor & send signals to a base station & onwards via Liveplugs to the livebox & thereon to my phone etc. They work a treat & record on movement to a micro sd or ext. hard drive. I'm not sure if they can 'sleep' & be triggered by movement as I've had no need being 'hardish' wired & it's always good tp see what's going on.
It can accomodate 2 more cameras so I thought I'd try one on the top of our polytunnel, which is about half way between base station & bottom of field, to see if wifi signal, which is about 300m in open field, will reach the base station after having passed through our crinkly tin stable & house stone wall.
I can use an existing camera to see if wifi signal will reach but am worried in case a/ a cheap power bank damages a 100€ camera & b/ it will require constant charging.
Just noticed your last para. It must be 100mW constant as camera is always on & sends 'record' command on detection of movement during pre-selected hours or constantly if required.

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RobertArthur
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Re: Lipo powerbank

Post by RobertArthur »

Whyme, under one of the front seats in my car a simple DC/AC converter, enabling passengers to charge their laptops when working. I don't know if you can drive your car 300 m away from base station in your field to check the reach of your wifi signal, but this would be step 1, using the safe method of a DC/AC converter and the supplied power adaptor. Stable signal? Step 2, start measuring the AC power consumption in "dormant" and "action" mode. Finally: try to figure out how much autonomy you could get with such a LIPO battery.

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Re: Lipo powerbank

Post by elsie »

What camera is it? Are you sure that 100mW isn't a mistake for 100mA? 5V/100mA would be the usual way of indicating what sort of power supply is needed.

Does it have LEDs for night vision? They will require extra power over daylight use.

There are cameras with rechargeable batteries and solar panels but I'm not sure they have an easily accessible connection for additional power top-up.

I tried a cheap CleverDog camera with a 10000mAh power-pack a couple of years ago and, if I remember correctly, it drained it in 12 hours of so overnight.

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Re: Lipo powerbank

Post by JohnnyD »

I wouldn’t hold out much hope of a WiFi signal at 300m through a barn working very well if at all.........

You may be lucky though.......

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Re: Lipo powerbank

Post by JohnnyD »

Whyme, looking at the specs of that system, the 300m mentioned is the daylight visibility range, not the WiFi range, a marketing ploy maybe, most domestic wifi will struggle at 60-70m

https://chacon.com/en/wireless-video-su ... 45497.html

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Re: Lipo powerbank

Post by b33jay »

whyme? wrote:
Tue Sep 15, 2020 8:28 pm
Dunno if this is the right place but here goes.
I'm looking to put a wifi camera in our field & need a power supply.
The camera needs 5v <100mW. Lidl have on sale a Lipo Powerbank 10,000mAh with usb outlet so presumably 5v.
My question is :- will this work & how long can I expect the Powerbank to last?
My calcs say 0.1w/5v =0.02A =20 ma so camera should last 10,000/20 = 500 hrs assuming Lipo doesn't discharge below min. discharge voltage.
Problem is I'm 2 large whiskeys down & I'm sure my brain isn't functioning right as this seems an awfull long time. :lol:
Anyone care to put me right.
Beware of quoted power bank capacities as it depends on what is being quoted and most good quality ones will struggle to provide 60% of the quoted figure under ideal conditions. A USB power meter may prove useful. The links below are from many available about power banks and meters.

https://tinyurl.com/y2ofx55l

https://tinyurl.com/y56v4uee

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