Specifications

27
battery packs
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.
Regenerative Braking
The Segway HT has a regenerative braking system that
charges the Battery Packs when descending a hill or
slowing down, or when you push or pull the Segway HT
while in Power Assist mode (without using the Steering
Grip for power).
When you ride down a hill, you may notice an increase
in the battery charge level. If your Battery Packs are
already completely full at the top of a hill, when you
descend, you may feel the Speed Limiter engage (see
page 15).
Surface Charge
Whenever you do not fully charge the Segway HT’s
Battery Packs (or most batteries, for that matter), there
is a possibility of surface charge affecting the accuracy
of 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. If required, plug the Segway HT back in
and recharge.
Recalibrating the Battery Charge Level
Display for Li-ion Battery Packs
The Segway HT indicates the battery charge level in the
Handlebar Display, as described above (see page 26).
When using Li-ion Battery Packs the Display may be
inaccurate after long periods of storage, or during
initial use. To recalibrate the Display:
1. Fully charge the Battery Packs for twelve hours.
2. Discharge the Battery Packs until the bottom bar in
the Display is blinking (approximately 10 percent
Battery Pack charge remaining).
To safely discharge to this level, you may leave your
Segway HT powered on in Balance Mode, leaning
against a wall. Make sure to do this in a safe, secure
location.
3. Fully recharge the Battery Packs for a minimum of
ten hours, after which the Battery Charge Level
Display will be recalibrated.