Recent content by KelDG

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  1. K

    Wattage question, am i driving this fully?

    Ah cracking, 2v per LED makes sense with there being 3 in series / 3 parallel chains, 5 - 6 volts makes sense. Yeah no proper Data sheet, just the Aliexpress info, no product markings to find one either. I'm not really bothered about it not being true 10W as long as I am driving it properly...
  2. K

    Wattage question, am i driving this fully?

    Hi, I have a small project going that needs a 10w IR led. Now I have it and also have a constant current / voltage board that I can tweak. The led says it needs 5-6V and 850-1000mA. So I set my board to 5.5v and 850mA. Now it seems to light up fine, I need to wait for tonight to get my IR...
  3. K

    2 ways of getting 1000 lumens: which is best?

    For 1000 lumens, you are going to need to be on a fresh charged 18650 but that that will steadily drop in output as the voltage drops. That's why I went for the tn4a in the end, you get 45 mins at 1000 lumens rather than 10 mins at 1000 followed by a rapid drop to a lower output. Have a look at...
  4. K

    Tesla looks to power homes

    I thought lithium batteries had about 500 recharges until they lose alot of capacity. How will they get around the fact these packs will only last a couple of years?
  5. K

    Flashlight or Spotlight??

    I'm in pretty much the same situation as you Dax702. I have never used the ultra high power lights but got the TN4A and a charger with 4AA eneloops included, cost very little, the batteries are good for 2000+ recharges and the torch really has a good range and spill on it. Well worth a punt for...
  6. K

    Power bank recommendation

    Thanks for all the recommendations, I'm going to try an anker e1 to start as it is only a tenner and the customer support seems good as some of you have said. If that does not work out well I'll try one of the more expensive ones suggested. Thanks again Kel
  7. K

    Power bank recommendation

    Hi all, I am after a power bank 3000 to 5000 mAh so nothing massive. Im guessing it will have 1 or 2 18650s sealed away in there. I am not interested in the li-ion chargers that have the functionality to become a powerbank, I want it all sealed up for my wife's bag. I know that leaves me at...
  8. K

    Riddles & Crazy Facts Giveaway :-) TN36vn NW

    Re: Riddles & Crazy Facts Giveaway :-) TN36vn NW Before Mount Everest was descovered, what was the highest mountain in the world? Mount Everest.......................... #989
  9. K

    Can AA NIMH accumulator explode/burn if overheated?

    Ignore this, apparently I can't read properly
  10. K

    TN36 vs Mini TN30, which would you choose?

    You can get a decent idea oon YouTube type in tn30 vs tn36. Although they are floody the tn30 mini looks like it has a defined hotspot where the tn36 is just a "wall of light". Both seem ace. What I want to know is considering these both ruin on 4x18650 what output are their turbo modes output...
  11. K

    A new Aluminium-Ion cell prototype

    I would take safer, fast charging and more recharge cycles in a heartbeat. I wonder what the voltage looks like during a discharge, would be cool if it did not drop much throughout like NiMh.
  12. K

    Household LED burnnouts

    Probably a bad idea, the bulb will be sealed but the rose it is connected to will not be, that is no good for a bathroom. Best case scenario is the RCD trips when it gets a bit steamy in there.
  13. K

    Household LED burnnouts

    What is the bulb housed in in the bathroom? I ask because the bathroomlight should be in a much higher IP rated enclosure, this really does not give the bulb a change of air causing it to overheat. Was a real problem with clf bulbs and was eventually put into the instructions not to use in...
  14. K

    Video camera decision??

    To be honest you want to get a phone with a good video camera on it (edit - which your iPhone will have). You will always have it with you, it will always be charged, they are just so easy to get out and go. Since our daughter came along there have only been 2 or 3 times when the actual stand...
  15. K

    Many on here and other sites seem to fear mongering to an extent and trust too much a

    So you are wrong I have proven through a manufacturers document that sulphuric gas can vent from a lead acid battery. Unless you want to dispute the manufacturer. But I am done here now. Have fun with all the friends you don't have.
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