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Turbo 35 Facts

Setting peak detection

In order to achieve the best performance from your packs, you will need to determine the correct peak detection voltage to use when charging them.  The ultimate method for this is to monitor the temperature of the pack right after the charge is complete.  It should be about 125 degrees F.  This insures that the chemical reaction that takes place while charging is complete.  Start with a lo9w peak detection voltage setting like .03 and test it on your batteries.  Increase as needed to raise the final temperature.  Panasonic NiMh cells may need a .03 peak detect.  Gold peak and Sanyo NiMh cells may need a .04 or .05 peak detect.

We have cycled some packs using other types of peak detection that did not warm the cells.  The results showed lower discharge time and average voltage.


TurboLabel has full support for the Turbo35 & GFX. 

Downloading graphs to a PC

You can download the discharge curve to your computer using HyperTerminal that comes with Windows. 

Go to Start>Programs>Accessories>Communications>HyperTerminal




Printing graphs directly to a dot matrix printer

Yes, you can print battery pack data and a graph of the discharge profile. However, to print labels for your pack, you must use TurboLabel.  To print directly to a Dot matrix printer (ink jet won't work) you need a serial to parallel converter.




Directions for T35 to ASCII printer.pdf

If your Turbo35 shows 0 for Actual internal resistance

You need to run a cycle to get this reading.  If you charge and then go to discharge manually it will not work.

If after a cycle the Turbo35 reads "check PC cable"

Your machine is configured for automatic computer data output after a cycle. This setting is used for automatically outputting data to the TurboLabel program after a cycle. When configured this way, if there is a problem with the serial connections between your Turbo35 and the computer, this message may appear.

To stop this message from appearing, press the Data button until the message "DATA PORT CONFIG" appears on the display. Then, press the up-arrow button to set this parameter for "COMP MANUAL" Finally, save your setup. This will eliminate the message.

Charging NiMh batteries with the Turbo30 or 35

When it comes to charging, the main difference between NiCd cells and NiMH is that the NiMH cells have a lower peak detect dropback voltage.

Recommended Charging procedure for NiMh:

4-7 Cell Packs: 5-6 amps with peak detection set at .03 volts for GP3300.

Maximum Cycles per day: Three, with a 1  to 2 hour rest period between cycles.

Dead Shorting is NOT recommended.

It is not recommended to leave a pack on a lightbulb type discharger for extended periods- only until the bulbs get dim! A discharge board such as trinity's #RC5100 is recommended. The pack can be recharged even if they were not brought all the way down previously, without any loss of capacity.

Unlike NiCd cells, NiMH cells will be damaged and their life severely shortened if they are overcharged.  Limit temperature to 125 degrees F for charge portion of cycle.

Note that you can charge these cells on the Turbo30 as well. Follow the guidelines given above.

Discharge information

Be sure to connect the small voltage sensing clips directly to the solder tabs of your pack when discharging to insure correct cutoff point.

Hook up battery message

Turbo 35 & 35 BL models:

If the unit displays hook up battery when attempting a charge or discharge, check the power connector used in the wires that connect to the pack - They melt & lose connection.  Also check the fuses.

Invalid settings

If a Turbo 30 or 35 displays invalid setting in the settable value locations,  try resetting the memory.  Hold the left arrow button (or Inc/Func for the Turbo30), apply power and continue to hold the button until you get to the charge screen.  You will notice that the charge rate has been changed to 3 amps.  Reset & save your setups.

Voltage sensing and current draw leads

The voltage sensing leads (small wires) are not dependant on length.  You can make tem any length you want.  They need to be connected to something that is soldered directly to the battery.  That is why we make them separate from the current wires (large wires).  There is a voltage drop at the point where the current jumps from the battery terminal to the current clip.  If you solder them to the current clips, or attach them to the current clips, the voltage is being measured after the drop occurs.  A typical error would be about .30 volts with a 30 amp discharge rate.  That means your 6 cell pack will cut off at 5.70 volts instead of 5.40.  The current carrying wires can be lengthened, but if you want to discharge single cells at 35 amps, the wires will need to be kept original length.  The calibration of the unit is not dependant on wire length, but its ability to control current at the extremes may be compromised when a lot of wire is added.