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  1. caesar

    Oh boy!!! DIY parts from Chinese suppliers....

    Thanks again Nerf for providing the connectors for us! Indeed, that particular 510 adapter looks exactly like the problematic center post type. I'll test them when they arrive and will let you all know.
  2. caesar

    Oh boy!!! DIY parts from Chinese suppliers....

    Already made a big order of connectors and adapters. Yay! Cheaper than the 901 and 801 charging adapters too. The 510 to 901 is grooved and seems to work for cartomizers :D Edit: H-G have adapters too now.
  3. caesar

    My homemade devices

    Nice one, looks very slick! That's also a good idea I put into practice. Winter is close so I'll make one connected directly to capture the heat from the atty to keep the batts warm. Lithiums don't like it when it's cold.
  4. caesar

    Modder's Printed Circuit Board

    Sorry folks, I intended to make them available at a normal price. I registered as a supplier, ordered PCBs locally just to test them, soldered a part of them, tested them. But there is no way I can provide them at a normal price. The PCB's were cheapest when ordered in China but they have a huge...
  5. caesar

    Shotgun mod in a neat case

    Very nice! And there is plenty of space to put a charger in there :D
  6. caesar

    Testing the resistance of the entire mod

    The voltage drop depends on battery quality and chemistry. Li-Poly will fare best followed by Li-Ion then Li-FePo("3V"). It is not unusual for Li-Poly to be rated 15C discharge rate, while Li-Ion around 2C and Li-FePo at 1C. So Li-FePo has the biggest voltage drop while Li-Poly the...
  7. caesar

    Recommended MosFet for 5v mods

    IRF8736 work great although a bit more pricey. Gate is fully on over 2.35V, mosfet is good for 14Amps.
  8. caesar

    Just a quick question for the battery gurus

    Don't see it mentioned anywhere, but from close to 100 bats ordered, all of them had capacities over 800mAh, while more then half reading 890mAh, so they are the best you can get from DX: DealExtreme: $5.49 TrustFire Protected 14500 3.7V 900mAh Rechargeable Lithium Batteries (2-Pack) Actually...
  9. caesar

    Testing the resistance of the entire mod

    All decent priced multimeters (under 200$) have a 1-4% error rate. You know what that means for a 4.2V measurement? It can read from anywhere between 4.032V to 4.368V. Now tell me how you interpret cashmere's results! Even a single 22AWG wire taken from a UTP cable can run 5A without...
  10. caesar

    Testing the resistance of the entire mod

    It's simple: in a perfect system, using a 4,2V power source to feed a 2Ohm resistor should read 2,1Amps according to Ohms law. If it reads 2Amps then the mod is good, anything lower: there are connection problems in the mod, usually switches or bad soldering. All conductive metals in any...
  11. caesar

    Testing the resistance of the entire mod

    That's why I said to measure the current passing through a 2Ohm resistor. A 250mA fuse measures almost 0 Ohms (low cost multimeters will read anywhere from 0 to 3 Ohm) but connected between atty and mod it will blow. The same is true for mods. Some could pass more current then others but all...
  12. caesar

    My take on a 18650 machined mod

    Not selling anything. Yet. All brass. Black dot is the switch, just a plastic plunger.
  13. caesar

    Testing the resistance of the entire mod

    I presume you used a normal 1% error multimeter, they are all the same then. Atty resistance also changes with temperature. That material you are looking for, that will drop voltage for 0,4V is a resistor. You are looking for a resistive material and the best is a resistor. Or you could use a...
  14. caesar

    Testing the resistance of the entire mod

    See, if I would have pumped that info on GA then you wouldn't have checked it for yourself :D I'd say good quality batteries are the most important factor and unless the mod has changed color from oxidation don't sand/shine it.
  15. caesar

    My take on a 18650 machined mod

    From left to right: - 901->510 adapter - 801->510 adapter - my precious: slightly smaller (lenght and width) than the DSE905, a little longer than a DSE801 batt. Uses 18650 2400mAh batt, charged in place with a USB adapter. 901 connector. First take, is 1cm longer than it should be. - 801...
  16. caesar

    Testing the resistance of the entire mod

    Come on people, any electrical wire (copper or aluminum) thicker than 32ga will read the same resistance and will have no importance. There is no difference between a 22ga wire and a mod body, they both conduct the same when it comes to a up to 10-20Watt load. Differences come in play only...
  17. caesar

    Testing the resistance of the entire mod

    Testing them with a copper rod will show all to have the same resistance. An ohmmeter puts only a very small amount of current when measuring and will throw results off. The real measurement is under load and that by measuring current flow through a known consumer. Use a 2Ohm 10watt resistor...
  18. caesar

    dual atty dual 18650 box mod

    This is the best suggestion yet. If you go the regulator way, please use 2 regulators. 1 510 atty @ 5V will get the regulator hot, 2 attys will make it shut down. PS: Mega don't: don't wire the bats in series and use 2 attys in parallel without reducing voltage. You'll kill both attys in an...
  19. caesar

    the start of my first mod .. dont laugh

    Nice! Really nice! atty outer shell goes to battery negative Input goes to switch then to battery positive GND goes to battery negative output 2 goes to atty center output 1 is the metal part on the body of the regulator with a hole in it that used to cool it. I think you should bolt that to...
  20. caesar

    801 nicostick connector

    Try cutting a small piece of bare PCB, solder the connector to it and then mount your button through the PCB and battery holder. This will tighten all nicely. Never had any problems with this method.
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