- Jul 11, 2001
- 37,476
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Over the last several months I've bought a few kinds of these. I just received a couple of these, which I really like:
2 Pack Miady Clip on Lamp, Battery Powered Reading Lamp, Clip on Light for Bed Clip on Battery Light with 3 Brightness Level, USB Rechargeable
Three brightness levels, it's pretty cool light ("5000k"), each lamp includes a 1000mah 18650 battery (they claim it's 1200mah, but I measured it at 1000mah in my Xtar charger). The battery is easily removable and I replaced each with a 2600mah protected cell.
I'm wondering how long the LEDs will last. There are 18 LEDs in the lamp head. I'm running one of these off the charging cable, having removed the battery. If I leave it on low as a night light (~15% the juice of high), will it likely last over 50,000 hours (I am guessing that on low or medium the LEDs will last longer than on high)?
I measured the watt usage when run off USB using my Kasa KP115 energy measuring smart plug:
High: 2.6w to 3.6w (depending on the USB charger, my SlimQ 65w GAN charger does better than the others)
Medium: 1.4w to 1.6w
Low: .45w to .6w
2 Pack Miady Clip on Lamp, Battery Powered Reading Lamp, Clip on Light for Bed Clip on Battery Light with 3 Brightness Level, USB Rechargeable
Three brightness levels, it's pretty cool light ("5000k"), each lamp includes a 1000mah 18650 battery (they claim it's 1200mah, but I measured it at 1000mah in my Xtar charger). The battery is easily removable and I replaced each with a 2600mah protected cell.
I'm wondering how long the LEDs will last. There are 18 LEDs in the lamp head. I'm running one of these off the charging cable, having removed the battery. If I leave it on low as a night light (~15% the juice of high), will it likely last over 50,000 hours (I am guessing that on low or medium the LEDs will last longer than on high)?
I measured the watt usage when run off USB using my Kasa KP115 energy measuring smart plug:
High: 2.6w to 3.6w (depending on the USB charger, my SlimQ 65w GAN charger does better than the others)
Medium: 1.4w to 1.6w
Low: .45w to .6w
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