Maha Powerex C9000 Manual
Contents
1. POWEREX MH C9000 WizardOne Charger Analyzer Thank you for purchasing the Powerex MH C9000 Charger Analyzer Read these instructions carefully and thoroughly before operating this unit IMPORTANT SAFETY INSTRUCTIONS READ AND SAVE THESE INSTRUCTIONS OPERATING THIS PRODUCT INCORRECTLY CAN CAUSE DAMAGE TO THE BATTERIES READ MANUAL COMPLETELY BEFORE USE GENERAL PRECAUTIONS Do not charge battery cells other than NIMH or NiCD Please check with the battery manufacturer to ensure it can accept the programmed charging and discharging rates Do not expose the unit to rain or moisture due to the risk of fire Do not operate the charger if it appears damaged in any way Always place the battery cells with positive tip facing the top Incorrect polarity may cause fire or explosion Observe polarity diagrams located on the charger Do not allow the unit to be exposed to direct sunlight Operate in a well ventilated area Do not place unit on the carpet Do not allow the battery terminals to become shorted To reduce the risk of damage to the power cord always pull by connector rather than the cord Use only the supplied adapter or optional regional and car adapter offered by Maha Energy Using third party accessories voids the product warranty FEATURES amp SPECIFICATIONS Four independent slots for AA or AAA NiMH batteries Backlit LCD display Digitally displays capacity voltage time and current Five mo2. capacity by as much as 20 30 Q I see that the charging capacity is much higher than the capacity programmed Why doesn t the charger terminate correctly A The charger terminates by voltage and by temperature simultaneously For certain older and low quality batteries they do not produce the proper end of charge signal a small voltage drop at the conclusion of the charge needed for the charger to stop At the same time the battery temperature failed to reach the termination limit as the charging rate was probably too low To address this issue you should attempt to perform a BREAK IN mode on the batteries first You should also use a higher charging rate Q Using the BREAK IN mode am seeing a charging capacity much higher than the capacity programmed A When using the BREAK IN mode the charger puts in 1 6 times the capacity of the battery entered at the start of the charge This does not cause any harm to the battery as the charging rate is very low only 10 of the battery capacity The increased total charging capacity compensates for energy lost as heat Time This is the number followed by the unit MIN This is the time elapsed for the particular routine such as charging discharging or rest in the program CHARGE gt REFRESH CU ANALYZE BREAK IN DISCHG CYCLE Voltage This is the number followed by the unit VOLT It represents the battery voltage If you compare this with a vo
3. during operation 4 When anew battery is detected the LCD will display an arrow below the bank number and prompt for the mode by flashing MODE Use the UP and DOWN arrow keys to choose the desired mode Press ENTER to make the selection If no key is pressed within ten seconds the charger will proceed to the default mode which is charging with 1000mA rate If more than one battery is inserted at a time without key press the charger will prompt for programming in the order in which the batteries were inserted 5 lf CHARGE mode is selected The charger will prompt for the charging rate by flashing SET CHG RATE Use the UP and DOWN key to select the desired current Press ENTER to make the selection Refer to the General Battery Education section on choosing an appropriate rate SET CHG RATE DISCHG _CYCLE lf REFRESH amp ANALYZE mode is selected The charger will prompt for the charging rate by flashing SET CHG RATE Use the UP and DOWN key to choose the desired current Press ENTER to make the selection SET CHG RATE CHARGE gt REFRESH ANALYZE BREAK IN DISCHG CYCLE Then the screen will prompt from the discharging rate by flashing SET DISCHG RATE Follow the same procedure as above CHARGE I SET DISCHG RATE gt REFRESH ANALYZE BREAK IN DISCHG CYCLE lf BREAK IN mode is selected The charger will prompt for the battery capacity in order to calculate the cha
4. Mode First recharges the battery rest for two hours discharges rest then recharges again Charging and discharging rates are programmable Reports the discharge capacity at the end of the cycle Useful when the battery capacity needs to be determined Also useful for battery with degraded performance Recommended once every ten cycles for NiMH batteries Break In Mode IEC capacity analysis Applies a 16 hour 0 1C charge 0 1 times the capacity of the battery rest of one hour followed by a 0 2C discharge rest again and finally a 16 hour 0 1C recharge again Recommended for brand new batteries This process is also known as Forming Charge Also recommended with batteries that cannot be rescued by the Refresh amp Analyze mode Recommended once every 30 cycles for NiMH batteries Requires 39 to 45 hours to complete The process follows the IEC standard for determining battery capacity Discharge Mode Discharges the battery at the selected rate Useful for analyzing the amount of charge stored in the battery Battery not recharged at the end of the cycle Cycle Mode Performs a charge discharge cycle for a programmable number of times Charging and discharging rates are also selectable At the end of the cycle a final recharge is applied Suitable for cycling the batteries multiple times The following table summarized the recommended mode for typical battery conditions Battery Condition Brand new b
5. atteries Break In NiMH batteries that have been used Charge frequently at least once every two weeks Batteries in storage for more than two Refresh amp Analyze weeks but less than 3 month Batteries in storage for more than 3 month Break In PRINTED IN TAIWAN A03 3713420 511 Battery Rescue Steps For batteries that do not perform favorably after using the mode recommended above the following sequence can be applied 1 Refresh amp Analyze for one to three times 2 If capacity is still low use Break In mode 3 Ifthe step 1 to step 2 shows some capacity improvement gt 10 repeat Break In mode for one to three times If no significant improvement is observed battery probably at end of useful life OPERATIONS 1 Connect the power adapter DC connector to the charger Plug the power adapter into a compatible outlet TIP When operating the charger outside of its intended region of use simply use a plug changer Maha part number MHS TC400 worldwide plug changer kit Transformer is not necessary 2 Raise the lift rod located on the backside of the charger 3 Insert AA or AAA battery Insert the negative end first as shown below TIP If charging two batteries inserting them in the first and fourth slot offers better cooling and lowers battery temperature NOTE It is normal for the batteries to become hot during charging and discharging It is also normal for a faint noise to emanate from the charger
6. des of operation Charge Refresh amp Analyze Break In Discharge and Cycle 19 selectable charging current from 0 2A to 2 0A 10 selectable discharging current from 0 1A to 1 0A Worldwide power supply Charging Current Programmable from 0 2A to 2 0A in increments of 0 1A Topoff Charging Current 100mA Maintenance Charging 10mA Current Discharge Termination Voltage 0 90V Discharging Current Programmable from 0 1A to 1 0A in increments of 0 1A PRINTED IN TAIWAN A03 3713420 511 Capacity Storage Memory 12 Cycle mode only Supported Capacity 100 to 20 000mAh Charger Input Power 12V 2 0A Adapter Input 100 240V 50 60Hz Always ensure that the batteries can accept the programmed rates DC Plug f Battery Battery Bays LCD Buttons Lift Rod backside GENERAL BATTERY EDUCATION What is 0 1C 0 2C etc C stands for the battery capacity and the number preceeding it is the fraction of the battery capacity For example 0 1C means 0 1 times the capacity for the battery For a 2700mAh battery 0 1C would be 0 1 times 2700mAh which equals 270mA Choosing the right charging amp discharging rate Charging at a rate below 0 3C and above 1 0C is not recommended Charging too slow may prevent the charger from terminating correctly Charging too fast may damage the battery Typically speaking slower charging rate will yield better battery performance but requires longer time Faste
7. l be stored as long as the battery is inserted in the charger It will be lost upon removal of the battery Warning Batteries should be disposed of seperately from the municipal waste stream via designated collection facilities appointed by the government or the local authorities rar et ad For more detailed information about the disposal Xr K of batteries please contact your city office waste kT 7 gt ra disposal service or the shop where you pe purchased the product Manufactured By MAHA ENERGY CORP 1647 Yeager Ave La Verne CA 91750 USA Tel 1 800 376 9992 1 909 392 1568 http www mahapowerex eu Copyrighted 1993 2007 Maha Energy Corp
8. ltmeter while charging the values will not match as a voltmeter is unable to measure the battery voltage during charging or discharging CHARGE CURRENT gt REFRESH PROGRESS BREAK IN piscHc Cio CYCLE At any given time during the program the charger will either be charging discharging or resting The LCD displays the action in black boxes containing CHARGE DISCHG or REST 8 If CYCLE mode is selected it is also possible to review the battery capacity of the completed cycle after the first cycle finishes Press the UP or DOWN key while the active slot is in the cycle mode will display the discharge capacity for that cycle The LCD will also display CYCLE HISTORY PRINTED IN TAIWAN A03 3713420 511 MODE CYCLE HISTORY CHARGE REFRESH ANALYZE BREAK IN DISCHG CYCLE 9 When the program for a slot is completed DONE will displayed to the right of the bank number With the exception of DISCHARGE mode topoff charge and trickle charge continuous will be applied For CHARGE mode the total charged capacity will be displayed For REFRESH amp ANALYZE BREAK IN DISCHARGE mode the total discharge capacity will be displayed AVAILABLE CAPACITY icon will also be shown For CYCLE mode the discharge capacity of the final cycle is displayed CYCLE HISTORY icon will also be shown Use the UP and DOWN key to access discharge capacity for all the cycles performed The capacity information wil
9. not performed for the discharge mode If this detection is believed to be incorrect a discharge can be performed first When the programs are in progress the charger will display the battery status for each occupied slot consecutively The screen will first show an arrow below the active bank and display the information The next slot s occupied follows Press the SLOT button at anytime will jump to the next occupied slot Press this button multiple times if necessary to go to the desired slot The following information is displayed on the screen Current This is the number followed by the unit MA This is the approximate charging or discharging current Note that this number will go up and down due to the pulse charging CHARGE gt REFRESH CU ANALYZE BREAK IN DISCHG CYCLE Capacity This is the number followed by the unit MAH This is the accumulated charging or discharging capacity If it is charging capacity CHARGE in black box will be shown If it is discharging capacity DISCHG in black box will be shown CHARGE gt REFRESH ANALYZE BREAK IN DISCHG CYCLE Note the charging capacity is usually higher than the actual capacity of the battery owing to some energy lost as heat Charging capacity cannot be used to judge the performance the battery Instead it can only be used to determine the progress of the charger It is normal for this number to exceed the actual
10. r charging rate may not charge as fully and battery temperature can be higher As for the discharging rate do not exceed 1 0C 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 amp 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 MODES OF OPERATION This section describes the various modes and when to use them To enable each mode refer to the Operation section Charge Mode Recharges the battery at the selected rate Useful when battery needs to be recharged without determining the capacity of the battery It should be used on batteries known to be in good condition and have been in continuous use Requires the least amount of time Refresh amp Analyze
11. rging and discharging rate automatically SET BATTERY CAPACITY icon will flash Use the UP and DOWN key to choose the desired current Press ENTER to make the selection SET BATTERY CAPACITY me E eee ii 3 lf DISCHARGE mode is selected The charger will prompt for the discharging rate by flashing SET DISCHG RATE Use the UP and DOWN key to choose the desired current Press ENTER to make the selection CHARGE SET DISCHG RATE REFRESH ANALYZE BREAK IN gt DISCHG CYCLE If CYCLE mode is selected The charger will prompt for the charging rate and discharging rate similar to the other modes In addition it will also prompt for the number of cycles to be performed by flashing SET CYCLES Use the UP and DOWN keys to choose the desired cycles Press ENTER to make the selection PRINTED IN TAIWAN A03 3713420 511 6 SET CHG RATE CHARGE REFRESH ANALYZE BREAK IN DISCHG MODE CHARGE REFRESH ANALYZE BREAK IN DISCHG CYCLE CHARGE REFRESH ANALYZE BREAK IN DISCHG CYCLE _ 4 To ensure safety the charger performs a battery health impedance check at the beginning of the program If the battery fails this test HIGH would be displayed and program will be terminated DISCHG CYCLE Typically alkaline and extremely aged battery will fail this test For a rechargeable battery it is recommended for the battery to be discarded NOTE This test is
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