Version 2.0
Segway RMP – User Guide
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General Battery Information
Regenerative Braking
The Segway RMP 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 RMP while in Tractor
Mode. When driving downhill, 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, a speed limit may
be enforced to prevent overcharging.
Surface Charge
Whenever you do not fully charge the Segway RMP’s Battery Packs (or most batteries, for that
matter), there is a possibility of surface charge affecting the correlation between voltage and
stored energy. After you power on, check the battery voltage level, then operate for at least three
or four minutes and check the battery voltage level again. If the battery voltage level drops quickly
during these three or four minutes, you should conclude that the Battery Packs had only a surface
charge. If required, plug the Segway RMP back in and recharge.
Temperature Affects Performance
The Battery Packs will generally be significantly warmer than the air temperature due to heating
that occurs as electricity is delivered from them (while operating) and to them (while charging.)
Operating in Hot or Cold Temperatures
The Battery Packs will run at the highest capacity when you operate them nearest the center of
the recommended operating temperature range. If the Battery Packs on your Segway RMP
become too hot or too cold while operating, the Segway RMP may reduce the speed limit or
perform Safety Shutdown. As with all batteries, less energy is available at low battery
temperatures. You may not be able to travel the same distance when the Battery Packs are
cold, as when the Battery Packs are nearer to room temperature.
Charging in Hot or Cold Temperatures
Your Battery Packs should be within the recommended charging temperature range prior to
and during charging. The Battery Packs will charge most efficiently when they are nearest the
center of the recommended charging temperature range. If your Battery Packs are too hot or
too cold, they may take longer to charge, or they may not charge at all. If you are concerned
that the Battery Packs may be too cold or overheated during charging, refer to Charging
Failures.
Replacing Battery Packs
Battery Packs should last the equivalent of 300 to 500 full charges. As your Battery Packs near
the end of their useful life, they need more frequent charging and your Segway RMP’s range will
be reduced. To order replacement Battery Packs, contact Segway.
Use the Same Battery Pack Types
Your Segway RMP is powered by two rechargeable Battery Packs. Do not mix Battery Pack
types. Always use Battery Packs in pairs of the same chemistry, for example, two NiMH or two Li-
ion Battery Packs. If two Battery Packs of different chemistry type are installed on the same
machine, you will be unable to operate your Segway RMP
