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  1. K

    Cold weather AA NiMH performance

  2. K

    Cold weather AA NiMH performance

    Last update, the battery I discharged in the freezer had been sitting at room temperature since last night. I just discharged it to .9 volts so I could charge both up again, and it had a capacity of 241mah. 1390+241= 1631 mah compared to the one I discharged at room temp at 1637 mah. You have...
  3. K

    Cold weather AA NiMH performance

    I have no idea. My eneloops have at most 10 or 11 cycles on them. Most of those were forming charge to begin with and cycling them at different discharge rates when I first got them.
  4. K

    Cold weather AA NiMH performance

    It is finished discharging and my IR thermometer said the freezer temperature was 6.7 F, last time I checked it said 5F. The 24 hour frozen eneloop AA discharged while inside the freezer to 0.9 volts had 1390mah capacity. That is almost 85% of the one I discharged last night at room...
  5. K

    Cold weather AA NiMH performance

    Thanks. It is just over 40 minutes into the discharge test inside the freezer. The voltage dropped to 1.07 within 40 seconds discharging at 1 amp according to my ICharger 106b+. Withing 5 minutes or so, the voltage stabilzed at 1.04 and it has been hanging on there so far.
  6. K

    Cold weather AA NiMH performance

    So I just was looking at 4 eneloops on top of my dresser that have likely been sitting there 2+ months since last charged. I grabbed two and put one in the freezer, both measured 1.326 volts open circuit on my multimeter. Updates on capacity I will edit this post and you will find the results...
  7. K

    Cold weather AA NiMH performance

    Sanyo claims good performance from eneloop aa's down to -20C, whatever good performance means. They have 1c discharge curves down to -10C on their web page here: http://www.eneloop.info/home/performance-details/low-temperature.html . I have tested AccuEvolution D cell lsd nimh inside my...
  8. K

    AA > D parallel adapters

    I have 6 AccuEvolution LSD D cell nimh I purchased from battery junction several months back. When I recieved them, I discharged each individually at 2 amps using my icharger 106b+ and each one was between 9100 and 9250 mah straight from the package. I charged all 6 in series at 1 amp and let...
  9. K

    What driver for 3 led mag mod?

    I have a few high cri seoul p4's and want to mod my 3D mag lite with 3 of them and have multiple levels, at least low/high and preferably low/mid/high, and no strobe/signal or any other useless to me modes. I will be using 3 D nimh batteries since I have several already and don't want to get...
  10. K

    hobby charger question

    I just recently purchased a Venom Pro Charger, and it is going back for a refund. The software with it is not compatable with windows vista, even though the manual says that it is. Tech support for Venom straight up said it was not compatable with vista and had no clue the manual said it is, go...
  11. K

    Panasonic Battery Could Power House for 1 Week

    Actually, there are many uses for this. Your average home uses around 1000kw of power each month, but I imagine most everyone here uses way more power than that, that is just a national average used in the utiliity industry. Your friendly local power company, or not so friendly, has to keep...
  12. K

    Not exactly flashlight related, but led and driver related

    I'm looking to modify an inexpensive game camera that uses IR led's for the flash. The led driver in the cam has a few issues, it does not like NiMh batteries and overdrives the leds badly causing white out of pictures inside of 20 feet, draws 1.5 amps from the batteries (4 c in series), and...
  13. K

    coin cell batteries:NEED ADVICE, please

    I have the exact same problem with one of my lit reticles not adjusting low enough in poor light. Without the light, I can clearly take a shot but cannot see the reticle, with the reticle lit on lowest setting, I can no longer clearly make out the target. I would gladly pay someone to make a...

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