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  1. S

    1S 18650 Pack Discharger

    And if you really often want to discharge with a high current, you can use an external load resistor to significantly increase the discharge capacity of the charger and thus strong reduce the thermal load on the charger itself. However, the load resistance must then be adjusted precisely for the...
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    1S 18650 Pack Discharger

    Junsi iCharger - e.g. the X6. Up to 30W or 7.0A discharge current would be possible. Or the old models: 106B, 206B (20W 4.7A), or 306B (80W 19.0A)
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    SkyRC MC3000: How to start another program on a finished slot without disconnecting the battery?

    What else do you want to stop? When all charging slot LEDs are green, all processes are complete. :) There is no off switch. If there were one, you would have to remove all the batteries before switching off. There is a risk that the batteries would otherwise discharge slowly.
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    SkyRC MC3000: How to start another program on a finished slot without disconnecting the battery?

    Keep the SNB button pressed for 2 seconds - the finished program flashes - press the SNB button briefly - the last program number appears - use the up or down arrow to select a new program - to start: keep the SNB button pressed for 2 seconds
  5. S

    Old LiIon Battery voltage settling/drop after full charge

    3.8V after a full charge? I think you are confusing something now. If the cell of a LiIo battery shows an open circuit voltage of 3.8V, it has been discharged to about 40% state of charge. That's why you can still charge it back to 4.20V. A battery that drops to 3.8V open-circuit voltage...
  6. S

    Old LiIon Battery voltage settling/drop after full charge

    However, this lower open-circuit voltage should only serve as an indicator of the declining performance of a battery. You get more precise assessment criteria if you have the opportunity to measure the internal resistance of the battery. You should do this already when it is new and note the...
  7. S

    Old LiIon Battery voltage settling/drop after full charge

    Yes, the increased voltage drop compared to when it was new, can be seen as an indication of an aged battery. Doubling the voltage drop in the same time means about twice the internal resistance of the battery. The prerequisite for this is, that the termination current at the end of charging was...
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    SkyRC — IFA 2014 — MC3000 charger-analyzer

    Because I think a separate Eneloop program is superfluous. I often charge mixed: "LSD" cells and "Non LSD" cells with the same parameters.
  9. S

    Energizer AA Lithium

    Have you ever checked your tester against a real discharge? For the cells where the tester only shows 40%, I would discharge one or two cells with a charger with a discharge function at 0.5A. Just to check the 40% against.
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    Li-Ion charger (18350/18650, etc.) that will keep the battery ready to go?

    I don't know of any charger that keeps lithium-ion cells at the end-of-charge voltage of e.g. 4.20V indefinitely. And if there was, I wouldn't want to use it because it's bad for the batteries. Lithium batteries feel most comfortable with a state of charge within 20 to 80% For this reason, I...
  11. S

    SkyRC — IFA 2014 — MC3000 charger-analyzer

    That sounds like 0dV is the recommended universal setting. As I said, if the batteries are in good, like-new condition, I'll be there. The problem are older batteries. Even with high delta peak settings of 6mV and more, I had premature charging shutdowns with them. And often not just once...
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    SkyRC — IFA 2014 — MC3000 charger-analyzer

    The thinking behind it is probably: A lower charging current triggers a lower temperature rise at the end of charging and thus also a lower voltage drop (delta peak) of the battery. If the delta peak value is set too high, it may not always be reached with a lower charging current (e.g. 0.3C)...
  13. S

    AAA Batteries for DECT phone question again

    If you leave the phone in the charging cradle most of the time, use the batteries that came with it. If they are boiled to death in it over time, then the loss is not so great. You then have an indication of the durability of this use.
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    Is there anything better than/equal to the SkyRC MC3000 out there now?

    No
  15. S

    Charger that stops at voltage?

    With the SKYRC MC3000, the voltages and currents can be adjusted in many areas. With NiMh, however, only from 1.47 to 1.80V. With LiIo, the end-of-charge voltage can be set from 4.0 - 4.25V. In addition, there is a storage program that can be set from 3.65 - 4.0V. The discharge voltage is...
  16. S

    RC car batteries - LiPo v Li ion, chargers

    If a charger is labeled as "LiPo Balance Charger", it can also charge and balance LiIo cells. You can even use the LiPo Balance program directly for this if you want to fully charge the LiIo cells. If you use the LiIo Balance program instead, the end-of-charge voltage is only set to 4.10V/cell...
  17. S

    Efficient way to discharge Li-ion to specific voltage?

    Sure, you can store both settings in separate memories. With the faster discharging method, setting the specified storage voltage can become more complicated if the lowest adjustable value of 3.65V is not sufficient. Then you would have to use the discharging program instead of the storage...
  18. S

    Efficient way to discharge Li-ion to specific voltage?

    I advised you to the MC3000. Now I won't leave you alone with the settings either. If you want to hit the target voltage exactly even after switching off the discharge current, you must also set a low termination current for the discharge, named: Discharge Reduce. Quasi CC/CV when discharging...
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    SkyRC — IFA 2014 — MC3000 charger-analyzer

    Yes, you can freely set the end-of-charge voltage in a range from 3.65V to 4.40V (including storage and LiIo4.35). This freedom of adjustment is what I appreciate so much about the MC3000. You can find the setting ranges in the operating instructions under: "BATTERY VOLTAGES" (page 11).
  20. S

    SkyRC — IFA 2014 — MC3000 charger-analyzer

    But it can only differentiate between these because it doesn't have to provide a contact for LiIo sizes such as 18650. Most universal four bay chargers that can charge both LiIo and NiMh have been found not to work well with NiMh. So far I've been happy with the MC3000 here too.

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