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  EnerG4600 NiMH  

Optimum battery pack performance will be obtained by achieving the followingů

  • Assembling the battery pack properly  ´click!
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    Assembling the battery pack properly is the most important task in making sure it will deliver to its full capacity.

    • Cut down the battery stick to cells using an exacto knife.

    • Scuff both sides of each cells using 400 grit sandpaper.

    • Clean all surfaces of any residue.

    • Align the cells in a battery jig such as Deans' Speed Jig.

    • Using a good soldering iron (at least 40 Watts), apply a small amount of 60/40 rosin core solder to both sides of each cells.  The covered area should have a diameter of approximatively ╝" (6 mm).

    • Lay down a high quality battery bar, such as Deans' Pro3, on the first two cells. While pressing the battery bar down firmly against the cell, apply a small amount of solder to the edge of the battery bar where it touches the cell. Allow the solder to solidify before removing pressure from the battery bar.

    • Repeat the same procedure for all remaining cells.

    • Your soldering job should look like this once completed .. soldered.jpg (98573 octets)

  • Properly charge the battery pack  ´click!
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    When the charging cycle is getting near completion, you'll notice that the battery pack is getting much warmer.  Proper cell temperature will vary depending of the room temperature.  At 70F (room temperature), the ideal optimum cell temperature reached at the end of the initial charge cycle is around 120-125F.  A proper charge will guarantee ideal cell temperature at the start of the race and that's critical in making sure it'll deliver to its full capacity.  So how will you get a proper charge:

    • Set your charger properly (see recommended settings below).

    • Initiate the charge as late as possible in order to minimize the rest time between the end of the initial charge and the start of the race.

    • Don't allow direct airflow onto the battery pack during the charging cycle.

    • At the end of the initial charge, cover the battery with a clean rag if you know that the rest time is going to be greater than 10 minutes.

    • Re-peak the battery pack just before your race (see recommended settings below).

     

To maintain your battery pack performance level at its peak, youĺll avoid doing the following...

  • Overcharging the battery pack  ´click!
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    As much important as it is for the battery pack to be warm in order to deliver to its full capacity, overcharging the battery pack will lead to pack failure.  Overcharging the battery pack can be prevented by making sure the charger is properly set.  Please see recommended charge settings below...

  • Allowing the battery pack to self discharge itself below the minimum recommended capacity  ´click!
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    The new EnerG4600 cell is an impressive cell, it performs to standards never set before.  The new chemicals used in this cell requires special care though.  By the nature of this new evolution, the cells are now more exposed to self discharge quicker than ever before.  All EnerG4600 cells shall not be allowed to self discharge below 1.1V while resting for the next race day.  In order to prevent the cells from self discharging and reaching sub recommended capacity, the battery pack needs to be partially charged when rested in between race week/days.  See "Race Day" recommended procedures for all the details...

 

Recommended charge settings

You've purchased a high quality battery pack ... make sure it delivers to its full capacity!  Charge the battery pack using a high quality charger and set your charger using the following recommended settings.

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List of recommended chargers  ´click!
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If your charger is not listed here, send me an e-mail and I'll confirm its compatibility with the EnerG4600 cells.

  • Charge amperage:  Linear 7A

  • Delta-Peak voltage:  5mV per cell  ´click!
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    Just so you get it right ... 5mV = 0,005V ... that means the recommended delta-peak voltage for 4-cell packs is 0,020V (0.02 on Competition Electronics chargers) and for 6-cell packs is 0,030V (0.03 on Competition Electronics chargers).

  • Long lockout feature:  Not needed  ´click!
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    When enabled, this feature allows the charger to ignore the delta-peak voltage setting for a preset time, it then prevents false peaks from occuring.

  • Flex charging:  Disabled

  • Re-peak:  Only if battery pack has been rested for more than 2 minutes

  • Re-peak detect voltage (if the pack has been rested for 2-10 minutes): 2mV per cell  ´click!
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    Re-peak the battery pack as late as possible, re-peaking just before your race is ideal.  Example:  For 4-cell packs 2mV per cell equals 0,008V.  So, visually monitor the battery pack voltage during the re-peak and manually terminate the re-peak once the voltage drop back 0,01V.  A full re-peak usually take 120-180 seconds.

  • Re-peak detect voltage (if the pack has been rested for more than 10 minutes): 3mV per cell  ´click!
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    Re-peak the battery pack as late as possible, re-peaking just before your race is ideal.  Example:  For 4-cell packs 3mV per cell equals 0,01V.  So, if the battery pack has rested for more than 10 minutes after the initial charge, you shall re-peak it using the same delta-peak voltage as the initial charge.  A full re-peak usually take 120-180 seconds.

     

Recommended discharge settings

Once you're back to your pit, make sure you properly discharge your battery pack.  If it is important to keep your motors clean and ready to go, it is as important to properly discharge your battery pack as soon as you're back to your pit.  A properly discharged battery pack will run more consistant and will deliver good predictable power on the next run.

  • Discharge amperage:  Linear 35A

  • Discharge cutoff voltage:  1.0V per cell  ´click!
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    4-cell=4.00V ... 6-cell=6.00V

  • 0V Deadshort:  Not recommended  ´click!
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    Though it is not recommended on new packs, 0V Deadshort can revive old worn out battery packs that no longer perform to their original state.  Special care should be taken when deadshorting packs, e-mail me for more details.

 

"Race Day" recommended procedure

  • Here are step by step, the recommended charge/discharge procedures that you should follow while at the race track.

    bullet  If you're going to run the battery pack only once on race day
    • Just before charging the battery pack, using a tray such as the Integy 0-30 or Trinity DPD individually discharge each cells (0-30: Until the lights go dim) (DPD: Set at 1.0V per cell ... 5A linear or 30A pulse)
    • Then, charge at 7A - 5mV per cell cutoff. (4-cell=0.02 ... 6-cell=0.03)
    • Re-Peak just before going out on the track at 7A - 2mV per cell cutoff. (0.01)
    • After your run on the track, and as soon as you're back to your pit ... (pack is still warm) discharge the battery pack at 35A down to 1V per cell ... 4-cell=4.00V ... 6-cell=6.00V.
    • Once the battery pack has completely cooled down (can be next day), using a tray such as the Integy 0-30 or Trinity DPD individually discharge each cells (0-30: Until the lights go dim) (DPD: Set at 1.0V per cell ... 5A linear or 30A pulse)
    • Then, put 2100mAh back in the battery pack (1080 seconds of charge @ 7A).
    • Let the battery pack rest in that state. ***
    • Monitor cells' voltage now and then, and if need be, put more charge in the battery pack so the cells' voltage stay above 1.1V.

          *** TQ Cells recommend the Battery Nurse to store battery packs until further use. (5.4V for 4-cell / 8.0V for 6-cell)

    bullet  If you're going to run the battery pack for a second time on race day
    • Just before charging the battery pack for the first run, using a tray such as the Integy 0-30 or Trinity DPD individually discharge each cells (0-30: Until the lights go dim) (DPD: Set at 1.0V per cell ... 5A linear or 30A pulse)
    • Then, charge at 7A - 5mV per cell cutoff. (4-cell=0.02 ... 6-cell=0.03)
    • Re-Peak just before going out on the track at 7A - 2mV per cell cutoff. (0.01)
    • After your run on the track, and as soon as you're back to your pit ... (pack is still warm) discharge the battery pack at 35A down to 1V per cell ... 4-cell=4.00V ... 6-cell=6.00V.
    • Let the battery pack completely cool down to room temperature (will require at least 90 minutes)
    • Then, just before re-charging the battery pack for the second run, using again a tray such as the Integy 0-30 or Trinity DPD individually discharge each cells (0-30: Until the lights go dim) (DPD: Set at 1.0V per cell ... 5A linear or 30A pulse)
    • Then, charge at 7A - 5mV per cell cutoff. (4-cell=0.02 ... 6-cell=0.03)
    • Re-Peak just before going out on the track at 7A - 2mV per cell cutoff. (0.01)
    • After your run on the track, and as soon as you're back to your pit ... (pack is still warm) discharge the battery pack at 35A down to 1V per cell ... 4-cell=4.00V ... 6-cell=6.00V.
    • Once the battery pack has completely cooled down (can be next day), using a tray such as the Integy 0-30 or Trinity DPD individually discharge each cells (0-30: Until the lights go dim) (DPD: Set at 1.0V per cell ... 5A linear or 30A pulse)
    • Then, put 2100mAh back in the battery pack (1080 seconds of charge @ 7A).
    • Let the battery pack rest in that state. ***
    • Monitor cells' voltage now and then, and if need be, put more charge in the battery pack so the cells' voltage stay above 1.1V.

          *** TQ Cells recommend the Battery Nurse to store battery packs until further use. (5.4V for 4-cell / 8.0V for 6-cell)