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  1. R

    Power Outage, How many Lumens, How many batteries? (for lights and more)

    There is one (animal humane organization) within a mile. Trouble is, unless I agree to adopt the cat, they will take over. Once they take the cat, the cat's day will be numbered literally. If the cat doesn't get adopted relatively soon, they don't end well. My wife and my daughter each has a...
  2. R

    Power Outage, How many Lumens, How many batteries? (for lights and more)

    Yeah, Poppy, I understand what you are saying. I know I may be taking some risk as my neighborhood may have similar ordinance about feeding feral cats. I am typing this as my Arduino is beeping = my PIR is triggering, and I can see the feral calico cat eating. I just love cats too much to see...
  3. R

    Power Outage, How many Lumens, How many batteries? (for lights and more)

    Hey, in less than an hour after I wrote my last post, the calico cat came by and had some food. Having been feeding her since kitten-hood, I am glad she made it through the storm ok. She isn't really hungry even. She just dropped by for a snack. The other cats, they are occasional visitors...
  4. R

    Power Outage, How many Lumens, How many batteries? (for lights and more)

    Well, our power stayed on this time! (NJ) We had around 3 feet of snow. Now that we (people) are ok, and snow cleared off the driveway and such, we are recovered from the storm, sort of. My mind is on the cats. Some years ago, I felt so bad seeing a homeless cat looking for food in the...
  5. R

    Power Outage, How many Lumens, How many batteries? (for lights and more)

    Roads are closed (NJ/NYC) NJ state police: over 200 spin outs... stay home... I just cleared a bit over 2 feet of snow off the deck (to prevent collapse due to over-loading), and it is still coming down at 1 to 2 inches per hour. Fingers crossed, power still on.
  6. R

    World's first real Free Energy Flashlight - no shaking - no batteries! No Solar.

    Solar charge! Ha, you obviously have not been through too many storms. I had a load of batteries, but got caught with my pants down during Storm Sandy. They were not charged. Between about 20 AA, I got about an hour of light. A hand crank radio/LED took me through the next few days. These...
  7. R

    Different Cree Q5 wattages

    Drilling a pair of holes did the trick for me. Now I can open it with a pair of straight goose-nose plier easily. Be careful that it is not close to the tubing itself, and don't make it too deep until after you remove it. After I got it off (and have a better view on if the hole is perfectly...
  8. R

    World's first real Free Energy Flashlight - no shaking - no batteries! No Solar.

    They may be good for emergency when you don't have electrical power to charge. One crank-light/shake-light in the house is not a bad idea.
  9. R

    Different Cree Q5 wattages

    To underline Wood Walkers' comment in agreement. While the Q5/R2 bin number means exactly how bright it is, Watt is like how many gallons of fuel a car burns per mile. You car burn 25 gallons of fuel per mile, it doesn't mean it is more powerful than the other car that uses merely 5 gallon per...
  10. R

    Using 18650's salvaged from Makita?

    It is unlikely that the batteries in a pack will have individual protection circuitry. It is probably protected by circuitry within the pack rather than individually. BUT - Don't dispose the battery purely for the lack of protection circuitry. The battery protection boards are fairly cheap...
  11. R

    How to adapt Li-ion batteries to replace AA batteries

    Why even run parallel. If it is indeed just 3mA, a single 3000mAH cell would lasts 1000 hours. Such low draw on LiIon, the battery protection circuit better be cutting out at 2.8v-3v. All the PCB's I've ran into cuts out at 2.4V to 2.6V. Drawing at 3mA will have basically no voltage sag, and...
  12. R

    Eneloop Battery Charging with Opus BT-C3100 Question

    As already suggested, run it again. One additional suggestion: If you have a webcam or something like that, take time-lapse photos. When it runs a few times, you don't know what are the intermediates mAH readings unless you set an alarm clock to go check every hour or something.
  13. R

    Definition of a Budget Light?

    I loosely think of (not really define) budget light as the the bottom 10% (or max 25%) of the price spectrum for that particular product and for that particular consumer market. Of course, not having a market analysis at hand, I can only guess. Note that I did not say "market size". So it is...
  14. R

    How can I match the battery to the LED?

    I agree with JasonJ. I don't think it is an XML either. Most likely, it is not even XML/XRE which are Cree products, it is likely to be the LatticBright series of similar LEDs. Do not despair, for under two bucks, you can bring it up to the XPG2 (Latticebright, I bet). I tried the XPG2 (from...
  15. R

    9V NiMH - go to?

    The batteries (TEnergy 9v) and charger (TN141) in this review are still in use, http://www.eevblog.com/forum/reviews/tenergy-centura-9v-and-tn141-mini-review/ and it still keeping my DMM humming. I am very pleased with them. I got lazy - about 12-18 months ago, I just wired a pair of wire...
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