Recent content by ltpdttcdft
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Most efficient >=100W equivalent bulbs in 2018
This is probably the best efficiency available in the US now. Also comes in 2700K and 5000K versions. For anyone else considering this bulb WATCH OUT for changed specs: There are several Sylvania bulbs which look identical but aren't as good (1500lm instead of 1600lm with the same model number)...- ltpdttcdft
- Post #9
- Forum: Fixed Lighting
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Most efficient >=100W equivalent bulbs in 2018
Had several CFLs burn out recently and looking to replace with LED. But most of the so-called 100 watt equivalents are more like 75W or lower. And the efficiency is not that good, most are around 100lm/W or worse. 1300lm is NOT 100W eq. A real incandescent 100W does 1620 lumens. Previously I...- ltpdttcdft
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- Replies: 9
- Forum: Fixed Lighting
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Help ID these 18650 from laptop pack?
*sigh* That's disappointing... and factoring in shipping to Hawaii it's probably even worse... Edit: and checking HKJ's charts, even for brand-name cells, the actual usable capacity of the cell is still somewhat less than the nominal capacity... for example, the Sanyo 2600mAh cell gave about...- ltpdttcdft
- Post #5
- Forum: Flashlight Electronics - Batteries Included
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Help ID these 18650 from laptop pack?
lol Amazon is the new eBay... What kind of price is good enough to be true? (in mAh per $) For comparison, this particular cell worked out to be 625mAh per dollar. 1651mAh / $2.64 = 625mAh/$- ltpdttcdft
- Post #3
- Forum: Flashlight Electronics - Batteries Included
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Help ID these 18650 from laptop pack?
So I thought it might be a good idea to obtain bare 18650s by purchasing a "new" off-brand laptop pack via Amazon . . . but I think I've been ripped off. Can anyone help identify these cells? Specs: 7800mAh/87Wh, 11.1V, 9 cells/Samsung cell Since the pack is 3s3p, each cell should have...- ltpdttcdft
- Thread
- Replies: 5
- Forum: Flashlight Electronics - Batteries Included
