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Home > Chargers > AA, AAA, C, D, 9V Chargers > AA and AAA Battery Chargers
Maha Powerex MH-C9000 AA - AAA Battery Charger
Part Number K-MHC9000-CS
Maha Powerex MH-C9000 AA - AAA Battery Charger<br>
Batteries not Included. Batteries shown for display purposes only! Click picture for Larger Image.
Free Deluxe Accessory Case Included
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Retail Price:  $72.97
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 Description
MAHA MH-C9000 Advanced Battery Charger Maha MH-C9000
*** New Fantastic Charger from Maha PowerEx
The Maha commitment to quality and usability never stops. Maha has always continued to improve and to refine all Maha products. This includes all Chargers, Batteries, and all products under the Maha name.
The MH-C9000 is Maha newest addition to the Maha product line, which will benefit greatly from this strong dedication.
You can be assured that the MH-C9000 will charge and rejuvenate over 99% of all current NiMH batteries now on the market with absolute precision.
As always your complete satisfaction is fully guaranteed.

Three Year Manufacturer's Warranty

Click here to download the MH-C9000 instruction manual

The MH-C9000 Wizard1 Battery Charger & Analyzer. Suitable for casual consumer users, enthusiasts and professionals, the MH-C9000 is capable of charging, conditioning, analyzing, cycling, forming and discharging one to four AA or AAA batteries, all while digitally displaying the battery capacity and voltage. All four slots can be operated independently in different modes and settings. A total of five modes are available.

Those seeing the unit for the first time will be struck by its large LCD screen, backlight by ultra-bright white LEDs. Measuring over 3.5” by 1.5”, the display is more than three times larger than its closest competition and shows a wealth of information that is very easy to read.

In addition to the standard charging, conditioning and discharging, the MH-C9000 Wizard1 charger-analyzer also offers two unusual operation modes.

The “Break-In” mode allows the user to input the capacity of the battery and performs a “forming” charge designed to properly break-in new batteries.

The “Cycle” mode allows user to charge and discharge batteries consecutively while storing the capacity for up to 12 cycles. There are ten selectable charging and discharging currents from 0.2A to 2.0A and 0.1A to 1.0A respectively. The charger also features four independent temperature sensors using Maha’s latest temperature rise detection algorithm in addition to the usual peak temperature detection. It is also armed with additional patented termination algorithms found in other Maha chargers.

The unit can be operated in either “basic” or “advanced” mode. In the basic mode, user merely needs to insert the batteries with no further key press. The charger will select the appropriate settings automatically, making it suitable for the casual users.

The MH-C9000 is also incredibly accurate. Using a quartz oscillator time base typically found in computer boards, it is able to report capacity within 1% accuracy across multiple units making battery bench marking more meaningful.

  • Four Independent Slots
    • It's like having four charger-analyzers for AA and AAA NiMH / NiCD batteries.
  • Large backlit LCD display
    • Digitally displays capacity, voltage, time and current.
  • Endless programming possibilities - over 10,000 ways!
    • 29 selectable charging and discharging rate. Charging current from 0.2A to 2.0A and discharging current from 0.1A to 1.0A in 0.1A increments.


Five modes of operation

  • Charge: Recharges the battery at the selected rate.
    -- Suitable for batteries used frequently
  • Refresh & Analyze: Charges the battery, rest for one hour, discharge, rest again, then recharges it. Selectable charging and discharging rate.
    -- Suitable for batteries stored for more than two weeks but less than 3 months or those showing poor performance
  • Break-In: Also known as IEC capacity measurement and "Battery Forming". Charges battery at 0.1C for 16 hours, rest for one hour, discharges battery at 0.2C, then recharges again at 0.1C for 16 hours.
    -- Suitable for new batteries and those stored for more than 3 months.
  • Discharge: Discharges the battery at the selected rate.
  • Cycle: Performs charge-discharge cycle for up to 12 times with discharge capacity stored in memory. Recharges battery after final cycle.

New ways to take care of your batteries and maximize runtime!

Battery Matching

-- In most devices, usually two or more batteries are used together. When batteries are used in a series, the performance is limited by the worst one. In other words, one poorly performing battery can significantly reduce the device runtime.

-- Battery matching refers to grouping batteries with similar “actual” capacity. To perform this, use the Refresh & Analyze mode to determine the battery capacity. Group batteries with capacity within about +/- 5% of the rated capacity.

Battery Forming

-- New batteries and those stored for extended period become chemically deactivated. Battery forming is a charge-discharge-charge cycle which forces a full charge into the battery at a very slow rate. This process activates the battery. In certain cases, it needs to be repeated two or three times.

-- Battery forming can be performed using the Break-In mode.


Delivers just the right charge

-- Independent negative delta V, temperature and timer protection eliminates over and undercharging.


Super light travel worldwide power supply and 12V compatible

-- Worldwide 100-240V switching adapter - light weight and small. Also compatible with 12V input. Will work on car when used with the optional cigarette lighter adapter.
  • LCD Size: 3.5 " x 1.5", very large text and digits display
  • LCD Back light: Ultra bright white LED back light
  • Average Charge Time for 4 AA batteries: 1 Hour
  • MH-C9000 Operation Modes:
    • Charge
    • Discharge
    • Analyze & Refresh (Charge > Discharge > Charge)
    • Break-In (new battery forming)
    • Cycle (stores capacity for 12 cycles)
  • New "Battery Forming Mode" : You can input the rated battery capacity for special forming charge (suitable for new batteries - which may help provide longer battery life and optimum performance)
  • 10 Selectable Charging Currents: 0.2A, 0.4A, 0.6A, 0.8A, 1.0A, 1.2A, 1.4A, 1.6A, 1.8A, 2.0A ( 2.0A is the same as 2000mA, 0.2A same as 200mA, etc..)
  • 10 Selectable Discharging Currents: 0.1A, 0.2A, 0.3A, 0.4A, 0.5A, 0.6A, 0.7A, 0.8A, 0.9A, 1.0A
  • Accuracy (Capacity): 1% - The capacity is determined by continuously integrating the measured current (actual current not set point) over time.
    High accuracy is achieved by using a precision shunt-resistor coupled with a 12-bit Analog-to-Digital converter as well as a quartz oscillator timebase.
  • Time Base: Quartz Clock (100ppm)
  • Stores battery capacity: Yes, up to 12 times in Cycle mode
  • Special Heat Management System: Protects your batteries from overheating
  • Trickle Charge -- Approx. 10mA when charging AA rechargeable batteries using modulated pulse trickle charge,
  • Number of keys: 4 for ease of use - One for each Battery Slot. No complicated key press combinations required
  • Charger Dimensions: 6.5" (16.50cm) L x 4.33" (11.00cm)W x 1.69" (4.30cm) H
  • Adapter Dimensions: 3.66" (9.30cm) L x 2.36" (6.00cm)W x 1.97" (5.00cm) H
  • 100~240V AC Lightweight Worldwide power Adapter Included. Weight: 170gr (6oz)
  • Optional 12V Car Power Cord is also available for 12V Operation.
  • RoHS & WEEE Compliant

Question: Does the MH-C9000 still maintain all the 10 charge rates up to and including the 2000mA charge rate when charging 4 AA batteries. ?

Answer: Absolutely. The MH-C9000 charger can be programmed to charge at any of the 10 programmable charge rates even when charging 4 batteries.



Question: What is the weight of the AC power adapter ?

Answer: The AC power adapter weighs 170gr (6oz.)



Question: Can you use the battery forming feature on older batteries or on New batteries only ?

Answer: You can use the battery forming mode at any time you feel that your batteries may not be performing as they once did. Often you can use the forming mode to help refresh any of your rechargeable batteries and help extend their useful life as well.



Question: Does the MH-C9000 charger have a Trickle Charge ?

Answer: Yes it does. As a matter of fact in certain modes, a "TOP OFF CHARGE" is applied after rapid charge termination to top off the battery. The rate is typically 0.1C ( Approx. 200mA ) and is applied for one hour. After that, an indefinite trickle charge is applied, usually at 0.005C (so around 10mA for AA rechargeable batteries) using modulated pulse trickle charge. This assures good battery performance even if the batteries are left in the charger for an extended period of time.


Question: Does the MH-C9000 battery charger have any limit on rechargeable battery capacity ?

Answer: Answered by: William Chueh of Maha Energy : The micro controller can support higher capacity batteries without any problem (however the capacity calculation limit is 20,000mAh).



Question: Does the MH-C9000 have a Charge/Test that follows the proper IEC standard procedure (rest period of one hour, IEC standard) ?

Answer: Answered by: William Chueh of Maha Energy : The MH-C9000 does have a built-in "IEC" capacity program under the "Break-In" mode.

The sequence is:
1. Charge for 16 hours at 0.1C (user inputs capacity - though for safety reasons, temperature monitoring will be enabled, but no voltage termination).
2. Rest 1 hour.
3. Discharge at 0.2C (up to 1.0A).
4. Rest 1 hour.
5. Repeat step 1 to 4 for four times.
6. Last discharge capacity is saved.
7. Charge - battery ready for use.


Question: Is the MH-C9000 battery charger compatible with the New Low Discharge batteries such as the Sanyo Eneloop, Uniross Hybrio, Maha Low Discharge Batteries, Nexcell EnergyOn, Accupower Acculoop as well as all other low discharge batteries?

Answer: Absolutely. All low discharge batteries are NiMH rechargeable batteries and can be charged with the MH-C9000 charger





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