Recent content by Russel

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  1. Russel

    Maha MH-C9000 unimpressive charger?

    The MH-C9000 terminates a charge cycle by several criteria depending on the conditions of the cell being charged. There is a temp sensor that will (if I remember correctly) stop the charge cycle until the temperature drops to a certain level. Also, the charge cycle will terminate at a certain...
  2. Russel

    Best rechargeable AA BATTS?

    Of the dozen or so remotes we have in the house I've never had a problem using Eneloops over the last several years. Some of the cheap quartz wall clocks seem to have a problem with the lower voltage of Eneloop NIMH rechargeable batteries. The clocks will run for a few weeks on the NiMH cells...
  3. Russel

    charger that runs off of 14.8volts dc??

    According to the information at the link you posted the charger input voltage is 5 volts, not 14.8. Where do you get the 14.8V number from?
  4. Russel

    Body-heat powered flashlight

    Good idea using [what I call] a Peltier cooler, in reverse. And she took the time to figure out a circuit to boost the voltage. Very admirable for someone so young. I see a future CPF member!
  5. Russel

    Maha MH-C9000 SUPPORT / FAQ - continuation

    Re: SOMETHING COMPLETELY NEW For the Maha MH-C9000: Custom C/D Adapters! The break in mode charges the cells at 0.1C for a fixed time of 16 hours. That is 1.6 times the capacity of the cell. NiMH cells at the 0.1C charge rate can tolerate this over charge because it is at a low rate, with...
  6. Russel

    Which Maha charger to go with a batch of Eneloops?

    That is correct. You can also set the break in capacity on the C9000 as low as 500 mAh, for a break in charge rate of 50 mA, or a maximum of 20 Ah (20,000 mAh) for a break in charge rate of 2 A (2000 mA). I set my C9000 to 10,000 mAh when breaking in the D cells that I have, with a resulting...
  7. Russel

    Maha MH-C9000 SUPPORT / FAQ - continuation

    Re: SOMETHING COMPLETELY NEW For the Maha MH-C9000: Custom C/D Adapters! That looks about right, given the 4 Ah limit that the C9000 has in standard charge mode. Keep in mind that you can top off a little more by leaving the cells for a couple hours after "done." If you really want to get a...
  8. Russel

    How Do I Break In Batteries With The MH-C9000 Charger I I Don't Know Tha Capacity?

    / It could be that the batteries in question are in such bad condition that the voltage drops below the cut off voltage when loaded with a 500 mA discharge. You might try putting one cell in the C9000 and setting the discharge current as low as you can, then watch while it starts discharging...
  9. Russel

    Confusion of each Eneloop generation.

    I'm wondering if there is a mistake on the table. The LITE 2nd gen AAA are rated at 950 mAh and the AA cells are rated at 550 mAh?
  10. Russel

    Lithium 1.5v rechargeable batteries... why not?

    http://batteryuniversity.com/learn/article/lithium_based_batteries
  11. Russel

    My NiMh battery charger project

    I see your point. If all the batteries are in line, it is easier to install them correctly in the charger. All the positive ends facing the same direction. If there is a cell on each side it could become easy to get confused as to which way each battery is suppose to be installed in the charger.
  12. Russel

    My NiMh battery charger project

    Wouldn't having a battery on each of the four sides promote better heat dissipation?
  13. Russel

    Maha MH-C9000 SUPPORT / FAQ - continuation

    Re: SOMETHING COMPLETELY NEW For the Maha MH-C9000: Custom C/D Adapters! [/LIST] Haven't seen you post in a while TakeTheActive! It's good to see you active! The 2.5 and 3X is referring to the number of regular charge cycles needed to fully charge a completely depleted D cell. During the...
  14. Russel

    Maha MH-C9000 SUPPORT / FAQ - continuation

    Yes. Technically, it would be three times, assuming the batteries are fully discharged. Break in mode doesn't have that limitation, but isn't the best way to charge the cells on a daily basis.
  15. Russel

    Eneloop voltage during discharge seems low

    You may find this thread helpful: http://www.candlepowerforums.com/vb/showthread.php?310472-C9000-how-is-discharge-voltage-measured&p=3581455&viewfull=1#post3581455 That is correct, 2000 mA pulsed charge current and 1000 mA [pulsed] discharge current. I suspect that Silverfox mistyped...
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