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G.T.Power A8 Operating Manual

Manual is about: Balance Charger/Discharger for NICD/NIMH/Lithium/PB Batteries

Summary of A8

  • Page 1

    G.T power a8 balance charger/discharger for nicd/nimh/lithium/pb batteries operating manual thank you for purchasing the g.T power a8 balance charger. This is a rapid charge/discharger with built in balancer, computerised with microprocessor and specialised operating software. Please read this entir...

  • Page 2: Contents

    - 2 - contents 1. Features 1 3 4 6 7 9 9 10 10 11 12 12 13 13 14 14 15 13 14 15 16 17 18 19 19 2. Exterior of the unit 3. Warnings and safety notes 4. Program flow chart 5. Initial parameter set up (users' set up) 6. Lithium battery(lilo/lipo/life)program 7. Nimh/nicd battery program 8. Pb( lead-sul...

  • Page 3: 1. Features

    - 1 - 1. Features optimised operating software when charging or discharging, a8 has an 'auto' function that sets the feeding current automatically. Especially for lithium batteries, it can prevent the over-charging can lead to an explosion by users fault. Every program in the unit is controlled with...

  • Page 4

    - 2 - processing time limit: you can also restrain the maximum process time to prevent from any possible defect. Input power monitor: to protect the car battery using as input power from being damaged the voltage of it always monitored. If it dorps below the lower limit the process will be ended aut...

  • Page 5: 2. Exterior Of The Unit

    - 3 - 2. Exterior of the unit 2.1 lithium balance charge program connection diagram warning it will damage the charger if you connect your battery with the a8 charger incorrectly. Please connect as shown in the following diagram carefully. Batt type/stop to select main program to stop the operation ...

  • Page 6: 3. Warnings and Safety Notes

    - 4 - 3. Warnings and safety notes • never leave the charge unsupervised when it is connected to its power supply. If any malfunction is observed immediately terminate the process and refer to the operation manual. • keep away the unit from dust, damp, rain, heat direct sunshine and vibration. Do no...

  • Page 7

    - 5 - • did you set up adequate current for charging or discharging? • lithium battery pack can be composed with parallel and series circuits mixed. You have to check the composition of the battery pack carefully before charging. • are all connections firm and safe, or is there an intermittent conta...

  • Page 8: 4. Program Flow Chart

    - 6 - 4. Program flow chart program select lixx batt program select nimh batt program select nicd batt user set program program select pb batt program select save data program select load data nimh charge 'aut' / 'man' n icd charge 'aut' / 'man' capacity cut-off key beep buzzer safety timer nimh/nic...

  • Page 9

    - 7 - 5. Initial parameter set up (users' set up) a8 will be operated with the default value of the essential user settings when it is connected to a 12v batttery for the first time.The screen displays the following information in sequence and the user can change the value of parameter on each scree...

  • Page 10

    - 8 - this shows the trigger voltage for automatic charge termination of nimh and nicd battery. The effective value ranges from 5 to 20mv per cell .If the trigger voltage is set higher, there is a danger of overcharging the battery; if it is set lower, there is a possibility of premature termination...

  • Page 11

    - 9 - this program sets the maximum charge capacity that will be supplied to the battery during charge. If the delta-pack voltage is not detected nor the safety timer expired by any reason, this feature will automatically stop the process at the selected capacity value. The beep sounds at every time...

  • Page 12

    - 10 - the left side of the first line shows the type of battery you select at the users setting. The value on the left side of second line sets a charge current and the value on the right side of second line sets the voltage of the battery pack. After setting the current and voltage press start/ent...

  • Page 13

    - 11 - 6.3 'fast' charging lithium battery the charging current is getting smaller as the process goes to the near end term of lithium battery chaging. To finish charging process earlier, this program eliminate certain term of cv process. Actually, the charging current will goes to 1/5 from the init...

  • Page 14

    - 12 - 6.5 discharging lithium battery the value of discharge current on the left side of screen may not exceed 1c for a maximum safety and the final voltage on the right should not be under the voltage level that is recommended by the battery manufacturer to avoid deep discharging. To start to disc...

  • Page 15: 7. Nimh/nicd Battery Program

    - 13 - 7. Nimh/nicd battery program these programs are for charging or discharging nimh (nickel-metal-hydride) or nicd (nickel-cadmium) battery commonly used for r/c model aplications. To alter the value at the display, press start/enter key to make it blink then change the value using inc or dec ke...

  • Page 16

    - 14 - 7.3 charge-to-discharge & discharge-to-charge cycle nimh/nicd battery set the sequence on the left and the number of cycle on the right. You can use this function for balancing, refreshing and break-in the battery. To avoid rising temperture of the battery, there will a brief cool-off period ...

  • Page 17: 9. Save Data Program

    - 15 - the screen displays the state of charging process. To stop charging forcibly, press batt type/stop key once. The audible sound indicates you at the end of process. 8.2 discharging pb battery set discharge current on the left and final voltage on the right. The discharge current ranges from 0....

  • Page 18: 10. Load Data Program

    - 16 - set up the charge current for manual charge mode, or the current limit for automatic charge mode. Each mode can be switched by pressing inc and dec button at the same time when the current field is blinking. Setting up discharge current and final voltage. Setting up the sequence of charge and...

  • Page 19

    - 17 - 11. Various information during the process you can inquire various information on lcd screen during charging or discharging process. When you press dec button the charger shows the establishment of user settings. And also you can monitor the voltage of individual cell by pressing inc button w...

  • Page 20

    - 18 - 12. Warning and error messages a8 incorporates a various functions of protective and monitoring the system to verify functions and the state of its electronics. In any case of occurring error, the screen displays the cause of error that is self- explanatory with audible sound. The output is c...

  • Page 21: 13. Specifications

    - 19 - 13. Specifications 14. Warranty and service operating voltage range: 10.0~18.0volt circuit power: max.150w for charging max.25w for discharging charge current range: 0.1~7.0a discharge current range: 0.1~5.0a current drain for balancing li-po: 300mah/cell nicd/ nimh battery cell count: 1~27ce...

  • Page 22

    Note:.

  • Page 23

    Rohs g.T power a8 balance charger/discharger for nicd/nimh/lithium/pb batteries.