Recent content by johnny13oi

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  1. J

    Do li-ion 3 cell protection circuits balance the batteries? I have a specific one

    Hey guys, I was wondering if the 3 cell protection circuits balance the batteries or at least charge each battery individually? I have one that came out of a portable battery pack that has another circuit that can take a wide range of input and output a wide range of voltages. The battery PCB...
  2. J

    Question about laptop battery voltage drop and heat

    Hey guys, it's been a while since I've been here but I seem to be having a problem. When using my laptop, I notice that at around 57% the battery heats up a lot and the voltage drops to about 9.7V for a 6 cell battery (I am guessing 3 cells in series and then parallel with another 3 cells) and...
  3. J

    Question about laptop charging circuit

    Hey guys, I havent been here in a while, but I was wondering if the laptop battery circuit inside the battery itself is of any use? A friend gave me a bad battery from dell Inspiron E1505 and was wondering if there is any use for it. I was planning on using the good cells left in it for...
  4. J

    900-Lumen P7 5-Mode at DX

    Maybe they should have like fins or something at the head like deep engravings (something like the square design on the Dexlight X.1) so that the surface area can be greatly increased to help dissipate the heat.
  5. J

    900-Lumen P7 5-Mode at DX

    Hi, I have been away from this flashlight business for a while now and this new P7 emitter seems very interesting. Would you rather get this P7 light or one of those quad cree flashlights for around the same price on DX. School has started to catch up really quick and have been trying to save up...
  6. J

    Energizer Energi To Go Step Up Circuitry

    Yeah I actually have the 2XAA one and it seems that if you start the charge on fresh batteries it's fine and will charge for a while. But if you stop the charge and try to start again it does not work. I am just worried about the circuitry drawing power from my phone when the batteries are not...
  7. J

    Energizer Energi To Go Step Up Circuitry

    Hey guys, sorry for bringing this post back but can anyone confirm that the circuitry in this has a diode in it to prevent the circuit from drawing current from the connected device. I ask this because the phone I have is known to become damaged if whatever is charging it does not have a diode...
  8. J

    Help upgrading solar LED garden lights?

    Hey guys, I just bought some solar LED garden lights for my parents as Christmas gifts and was wondering if there was any way in upgrading the LED? It seems to be pretty weak in light output and was wondering if anyone knew the typical mcd rating of the 5mm LED's in these things? I have some...
  9. J

    Cree's Binning 50+ LED's tested

    Wouldn't say placing a white box over it and then measuring the reflected spill a better indication of outputted light? These emitters could be putting out light unevenly causing the huge differences.
  10. J

    Cree's Binning 50+ LED's tested

    Man that is a huge amount of emitters, wish I had that many to play around with.
  11. J

    Where to get small li-polymers?

    Yeah I tried that too, actually, I think I found out what was wrong. One of the wires to the IR sensor on the heli was loose I think, I tried resoldering it and seeing if it made a better connection. It now seems to work just fine but kind of goes out of control after about 10 seconds in the...
  12. J

    Where to get small li-polymers?

    That's what I thought as well and tried turning off all the lights and even placing the transmitter right next to the heli. Still acts up the same way. I really have no idea.
  13. J

    Where to get small li-polymers?

    No it's some cheap one that is similar to it. The thing actually is starting to malfunction now. Whenever I push the throttle lever up a decent amount and let go. The heli keeps on going up for like another few seconds and then drops back down. It's not really a lag as it doesn't always happen.
  14. J

    Where to get small li-polymers?

    Hey guys, I just got this little RC helicopter that is pretty nifty that I got for really cheap. One terrible thing is that this thing gets less than one minute and then it is apparent that the battery is getting drained. I opened it up and there appears to be a 70mah 3.7V li-polymer battery in...
  15. J

    WF 500 3 x Cree (2x18650) Torch !

    How did you make it fit into the Mag? I definitely want to try this out if it is fairly simple.
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