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Basic Rider Optimization Training for the Segway
HT
Instructor Guide and Participant Workbook
Rev 3.5i - January 2004
© Segway LLC 2002
P/N 1707100001aa
Do not ride your Segway HT if there is inadequate charge in the Battery Packs (indicated by the red
unhappy face icon in the Display and no segments around the perimeter). Carefully monitor your
Display and be prepared to step off if your battery charge becomes completely depleted.
The battery charge level display shows the relative charge level. No battery gauge is accurate
enough to predict exactly when your battery charge will be totally depleted. It is best to keep track of
your battery charge level and recharge whenever possible.
In certain situations, such as riding uphill, the battery charge level display may temporarily drop
because you are drawing heavily on the Battery Packs. The battery charge level display should return
to the actual charge level once you return to level ground and reduce the load on the Battery Packs.
Surface Charge
Surface charge is a common side effect that results in inaccurate battery charge level information
when you have not fully charged batteries.
Whenever you do not fully charge the Segway HT’s Battery Packs (i.e., complete the cell balancing
process, see page 70), or when you are not drawing any power for a period of time, there is a
possibility of surface charge affecting the battery charge level display. This could cause the display to
falsely show a greater charge level. After you power on, check the battery charge level display, then
ride for at least three or four minutes and check the battery charge level display again. If the battery
charge level display shows rapid charge depletion during these three or four minutes, you should
conclude that the Battery Packs had only a surface charge. In that case, plug the Segway HT back in
and recharge.
Battery Pack Temperature Parameters
The Battery Packs will generally be significantly warmer than the air temperature due to heating that
occurs as electricity is delivered from them. If the Battery Packs on your Segway HT become too hot
or too cold while riding, the Segway HT may reduce performance (Display icon with straight mouth,
Speed Limiter and possibly Stick Shake Warning) or perform Safety Shutdown. Ease up. If
performance does not return to normal, stop riding and allow your Battery Packs to warm or cool to
within the recommended operating temperature range.
Your Battery Packs should be as close as possible to the optimum charging temperature range prior
to and during charging (see page 11). If your Battery Packs are too hot or too cold, the charging
indicator will continue to blink, indicating a slow or trickle charge, until the battery temperature is
within or near the optimum charging temperature range. Once stabilized within this range, the fast
charge will begin and the charging indicator will be solid green.
If the charging indicator lights remain blinking throughout the entire time that the Segway HT is
plugged in, then the Battery Packs have trickle charged the entire time. This will provide only a small
amount of energy into the Battery Packs.
If you are concerned that the Battery Packs may be too cold or overheated during charging:
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Check the charging indicators to make sure they show solid green, indicating fast charge.
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If the charging indicators do not show solid green within 15 minutes after the Segway HT is
plugged in, move the Segway HT to a location within or near the optimum charging temperature
range.
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After the Battery Packs are within the proper temperature range, reconnect the Power Cord.
If the charging indicators still do not show solid green within 15 minutes, contact Segway Customer
Operations at www.segway.com or call 1-866-4SEGWAY (1-866-473-4929).
In Hot Conditions, You Can Improve Charging By:
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Moving the Segway HT or off board charging unit out of the sun, or off of hot asphalt. (Into an air-
conditioned environment is best!)
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Placing a fan near the Segway HT or off board charging unit to blow air over the batteries.
