Watt Meters Keep You Informed

Watt meters are an invaluable addition to any e-bike. Now you can see exactly what your battery voltage is, how much current you are drawing and have a running readout of exactly how much energy you've drained from your battery pack. A watt meter is like an instrument panel for your bike so you always know exactly how your system is performing.

Watt's-Up Battery Meter

The lower left display constantly cycles through other vital information. It shows Minimum Voltage, Maximum Amps, Maximum Watts, Total AmpHours and Total WattHours.

Because all battery and load measurements are related, you will instantly see the Watt's-Up meter change to indicate your exact riding conditions. By watching the meter you'll be able to find the best gear to run in for maximum economy. You'll also be able to accurately predict exactly how much power you have remaining in your battery.

The Watt's-Up meter connects in the negative lead between the battery and motor and also requires a light gauge positive wire for power. It draws only about 10ma. Available in 3 colors as shown at right. The meter can be mounted to the handlebars with Velcro or an optional handlebar mounting kit is available.


Watt's-Up meter is available in translucent blue,
translucent green and black.

Watt's-Up Translucent BLUE $60ea.
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Watt's-Up Translucent GREEN $60ea.
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Watt's-Up BLACK $60ea.
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Optional Parts -
  Handlebar mount kit - $9.00ea
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Drain Brain Battery Meter

The Drain Brain meter features a wide range of electrical measurements and it also has a speedometer built in. In addition to measuring voltage, current and wattage, the Drain Brain can also calculate WattHours/Mile on the fly.

The Drain Brain's advanced features are what set it apart. Unlike other meters it is capable of storing all values after the power has been disconnected. On power-up it will immediately display the stored settings. To reset for a new trip, just hold the reset button for about 2 seconds. On each reset, the Drain Brain also increments a "charge" counter. This counter is useful to monitor how many times your battery pack has been discharged and recharged - an all-important number for keeping track of your battery's life.

Like most bike speedo's, the Drain Brain will display current speed, average speed, maximum speed and trip distance. It is adjustable to any size bike wheel and can display information in Miles or Kilometers.


The Drain Brain meter is available in black and includes
the handlebar mounting kit and the speedometer
sensor & magnet.

Drain Brain Meter - BLACK $149ea.
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