Recent content by willchueh

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    Maha MH-C9000 SUPPORT / FAQ - continuation

    Dear Turbo DV8, The time displayed at the end of the refresh/analyze cycle (i.e. along with "available capacity") should be the discharge time. William
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    Maha MH-C9000 SUPPORT / FAQ - continuation

    2-Hour top-off charge is applied in all modes except in DISCHARGE and BREAK-IN. William
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    Maha MH-C9000 SUPPORT / FAQ - continuation

    Tom, got your email. I am happy to contribute. Having read the posts, following are the issues Turbe DV8 experienced - and my thoughts: 1) Inconsistent discharge voltage between MH-C9000 and the BC-900 The MH-C9000 and BC-900 use different methods for measuring voltage during discharge. The...
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    MH-C9000 stuck at rest

    Tom is correct, the manual has a typo in the rest time. The rest time after charging is 2 hours whereas the rest time after discharging is one. Regards, William
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    Maha MH-C9000 SUPPORT / FAQ Thread

    Handlobraesing, Please read my reply earlier in the thread as well as this thread: http://www.candlepowerforums.com/vb/showthread.php?t=162441 Both charging and discharging current shown are the actual current. However, it does not include a ~10% off-time in the duty cycle. The "effective"...
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    MH-C9000.. difference on charge between Time weighed avg rate vs constant current?

    Re: MH-C9000.. difference on charge between Time weighed avg rate vs constant current? deleted
  7. W

    Whats better for charging & conditioning

    Concerning the questions above on MH-C9000: 1) The displayed charging/discharging rate does not include a ~10% off-time. For example, when you set current to 2.0A, it will charge at 2.0A for 90% of the time and rest for 10%. Of course, the capacity reported includes this effect. 2) Time base...
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    Maha MH-C9000 SUPPORT / FAQ Thread

    Does the power up LCD test normal (i.e. all symbols show correctly and digit display cycle from 0000 to 9999)? William
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    Maha MH-C9000 SUPPORT / FAQ Thread

    BREAK-IN mode, by definition, charges ~160% (16 hours at 0.1C) of the entered battery capacity. This is to allow for battery forming. Regards, William
  10. W

    Discharging alkaline cells in C9000

    Alkaline detection is not performed in the DISCHARGE mode. William
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    Maha MH-C9000 SUPPORT / FAQ Thread

    The MH-C9000 treats over-temperature as a "termination criteria" so no recharging is applied after the temperature drops. In my opinion, it might be a little dangerous to restart a charge after temperature drops as the over temperature may signify that something is wrong with the cell. In...
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    Maha MH-C9000 SUPPORT / FAQ Thread

    Codeman, when adding something in series to the battery, make sure it has very low or practically zero resistance. I wouldn't put anything that will add more than 0.1 ohm to the battery. If you get a "HIGH" (high impedance) error, that means the resistance is too high. William
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    CBAII VS C9000 discharge test

    The MH-C9000 uses 1.00V voltage to terminate discharge, but it is the OFFLINE voltage, which is measured with the current turned off. CBA uses the ONLINE voltage which is measured with the current still on. You can better match the result if you allow for a 0.05V to 0.10V deviation in the CBA...
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    MH-C9000 Termination Issues [ A "hot" discussion :P ]

    Re: MH-C9000 Two bays not terminating AAA charge @.7C (4C and still going) Bill, The OFF time is 10% of one single charge cycle. The off time is constant regardless of charging current. William
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    MH-C9000 Termination Issues [ A "hot" discussion :P ]

    Re: MH-C9000 Two bays not terminating AAA charge @.7C (4C and still going) PWM is used to regulate the discharge current. However, it does not involve an inductor (used for voltage stepdown in charging) therefore the scope will appear different. As for observed discharge current vs. the...
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