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  1. Lynx_Arc

    Beware Alkaline Cells

    For very low drain devices they are competitive if you get them dirt cheap. I buy them for my cheap HF multi meters as I often forget to turn them off and it is cheaper to kill a HD cell than an alkaleak a they cost about $1 vs about $4 for an alkaleak 9V cell. As much as alkaleaks can be...
  2. Lynx_Arc

    How do you explain this Hobby?

    We live in the dark at times, turn out the lights on them and see what they do/say. If they don't have an EDC then they will gripe at you while you reach in your pocket and whip out a light and light the room up and tell them if they were in an elevator without light would they freak out?
  3. Lynx_Arc

    Beware Alkaline Cells

    CZ or heavy duty batteries are about 1/3 the useful capacity of alkaleaks. It is only under a rather light load that they are probably closer to half I think. They leak too and it is often more of a mess than alkaleaks are as it tends to be runnier and more acidic I believe. The one minor...
  4. Lynx_Arc

    6V "Lantern" Battery Lights - History? Anything good?

    I have modded a 4AA incan lantern long ago before luxeons were cheap with 4x5mm LED and a CCFL tube. With todays lithium ion tech and LEDs that are 4-5 times more energy efficient plus circuitry that is able to run them at sub lumen levels the need to have a large 6V sized lantern is gone. I...
  5. Lynx_Arc

    What happened to good 9 volt flashlights?

    I think the niche that these lights filled for the most part has vanished or been replaced by a lot of other lights using more popular batteries. Back in the day of the Pal or Pak lights there wasn't even 80 lumens/watt LEDs and the dim long runtime of the 9V lights was useful. Fast forward...
  6. Lynx_Arc

    What is the next big thig in LED technology?

    My fixtures have old school ballasts in them and I have an extra light fixture and extra tubes so I would have to have 3 tubes fail and 2 ballasts to need to replace the one working light I still have in service.
  7. Lynx_Arc

    What is the next big thig in LED technology?

    That is sort of an issue for me, Buying a native LED fixture vs retrofitting a fluoro one with LED tubes. If the cost of the new fixture is cheaper than the price of tubes alone and you don't have to worry about ease of swapping out a fixture and the LED fixture lasts 10-20 years then it may be...
  8. Lynx_Arc

    What is the next big thig in LED technology?

    From what I'm thinking the addition of a ballast in the circuitry would reduce efficiency somewhat, and I agree if you aren't replacing tubes but every 4-5 years or more then retrofitting may be not really be a good investment. It sort of reminds me of when LEDs would be improved from something...
  9. Lynx_Arc

    What is the next big thig in LED technology?

    I am seeing several stores that are swapping out flourescent tubes for LED ones as mostly the maintenance cost likely is the reason for it as it probably costs more in the long run to replace tubes and also temporarily makes a mess of traffic in the stores. I just got back from home depot and...
  10. Lynx_Arc

    What is the next big thig in LED technology?

    I'm not finding these offerings online with any local store offerings here or online which to me means that likely they are going to cost a lot more than the the 1800 lumen ones that are available here. Until these better tubes are mainstream they aren't going to have much of a bearing on things...
  11. Lynx_Arc

    6V "Lantern" Battery Lights - History? Anything good?

    I still have one 6V lantern with a 4D adapter in it but the batteries started getting weak luckily I bought 2 6V LED PR base bulbs and had a warm white one that I got to work with it by flipping the batteries upside down in the carrier.
  12. Lynx_Arc

    Beware Alkaline Cells

    I"m wondering if he is using eneloops in the BP monitor or regular nimh cells. I do think eneloops can hold a slightly higher voltage for longer after charged than regular non LSD cells can which could be the difference perhaps.
  13. Lynx_Arc

    Beware Alkaline Cells

    Another big issue is that if you add in the not low enough power off to the fact that some nimh at low power current levels have about 1/3 less capacity (2000 tv 2800mah or so adding to the fact that the device shuts off before nimh is half way through discharging you can end up with maybe 1/3...
  14. Lynx_Arc

    What is the next big thig in LED technology?

    Yeah I've looked into retrofitting tubes and since likely I would only be doing a few shop lights I would be buying the tubes locally and have to do a lot of shopping and homework to see which offerings would require what work as some require a ballast, others can be either way and some require...
  15. Lynx_Arc

    What is the next big thig in LED technology?

    For practical purposes I've not seen the 140 lumens/watt tubes on the local market at all, in fact I just looked at a philips LED tube price at a local store that is 1800 lumens 16 watt or about 110 lumens/watt nothing spectacular to upgrade to if you are getting 90 lumens/watt IMO so unless you...
  16. Lynx_Arc

    Beware Alkaline Cells

    Yes there are many devices out there that stop working when voltage drops much below 1.3v and nimh cells tend to operate at 1.2-1.3v under a decent load. The one thing to do if possible is on a 4 cell device add a 5th nimh cell in series to your set which will give you 7v at the start and about...
  17. Lynx_Arc

    Dakota lithium ion rechargable batteries

    I've heard of them as I was once intrigued about a lithium car battery but when I started to think and research I found out the problems with them in a vehicle plus the cost was a lot higher.
  18. Lynx_Arc

    Old duracell chargers

    I know almost nothing about them other than they are 2x lithium ion cells in series I think and need a special charger. I'm guessing they are about 7.4v nominal or 8.4v max when fully charged. I'm thinking they may keep a charge longer than nimh cells and may have more capacity. My problem with...
  19. Lynx_Arc

    Old duracell chargers

    You could invest in a 9V stand alone charger I'm not sure what to recommend but a quick browse on Amazon yielded a Tenergy 9V smart charger that is about $10.... YMMV but reviews look decent and it will charge 2 batteries up to 500ma even. If I were using 9v batteries a lot I would probably look...
  20. Lynx_Arc

    Old duracell chargers

    actually they recommend 0.5C charging rate for nimh batteries to get proper end of charge detection so for a 2000mah AA you could use 1000ma (1A) and be safe. At 450ma some lower quality or damaged batteries may not detect end of charge properly but I use a 500ma charger for my batteries some...

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