Hardware Bargains - Open Thine Wallet

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sajunky said:
NOBLE W828 '30W' Portable LED Light. R249 @Esquire, elsewhere 100 bucks more. See their daily specials mail.

Power not even approaching my stationary 20W LED floodlight, but quite bright. 3 brightness levels, plus flashing red/blue mode. You can keep it in a car boot together with your med kit.

It is powered by 4x18650 Lithium batteries.
The included batteries are marked 9800mAh which is a dozen time exceeding typical capacity of Chineese recycling batteries (sort of a marking record), but specs are giving more realistic 1700mAh figure. When fitted with real batteries of 1700mAh capacity, it should give a whole night of uninterrupted backup light. According to some Web specs, protection is given against overcharging and overloading.

The lathern works as a power bank. Internal batteries are charged by micro-USB socket and another Type-A socket can give emergency power for cellphones. No detail regarding charging specs. Little-bit expensive, but gives a positive impression in general.
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Someone have asked for a link, here it is, scroll to the bottom: https://www.esquire.co.za/specials/2019_03_28Main.html

You get quite powerful lathern in the attractive package, plus a power bank. Total capacity is approximately 7Ah (when using good brand batteries). I used it for 2 or 3 hours in total and a battery voltage dropped to 3.88V, not promising long on the included batteries. A current is drawn maximum 1.2A, it gives roughly 5W (nor 30W as advertised). .LOL.

Batteries are packed in parallel, when removing one, light is still working. Don't do that to not unbalance your battery pack, but if you replace the entire pack with a single battery, it will give full blast.

I tested power bank feature, it has a standard overloading protection. When tested on the dumb resistive load, it gives a maximum [email protected]. If anything above, it just gives up. With a smartphone I observed maximum 300mA and jumping. It looks like a smartphone atempts to draw repetively more than 1.5A and triggers protection.
 
mubeend said:
Could probably cut a wire for the beeper
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Some UPS' wont work without the beeper (I know WTF right?), so just be careful.

Ive hooked up a Raspberry pi to mine, and am using NUT to disable the beep at startup as my Eaton UPS doesnt permanently disable the beep via its own software. If it gets turned off it resets the settings. Actually still want to check if it stays off via the NUT change.
 
HeftyCrab said:
Some UPS' wont work without the beeper (I know WTF right?), so just be careful.

Ive hooked up a Raspberry pi to mine, and am using NUT to disable the beep at startup as my Eaton UPS doesnt permanently disable the beep via its own software. If it gets turned off it resets the settings. Actually still want to check if it stays off via the NUT change.
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Test the resistance of the beeper. Put a resistor in its place
 
Hamish McPanji said:
Test the resistance of the beeper. Put a resistor in its place
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Nah its cool thanks. Using the Pi to grab data from the UPS as well. When I have time I want to graph it out with Grafana as a learning experience. Good idea for the future though when I tire of the Rpi sollution.
 
HeftyCrab said:
Some UPS' wont work without the beeper (I know WTF right?), so just be careful.

Ive hooked up a Raspberry pi to mine, and am using NUT to disable the beep at startup as my Eaton UPS doesnt permanently disable the beep via its own software. If it gets turned off it resets the settings. Actually still want to check if it stays off via the NUT change.
Click to expand...

My UPS is connected to my PC running NUT and it definitely re-disables the beeper when the UPS gets reset. So your Raspi solution should work fine.
 
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