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Power Accessories 
Power is vital to the operation of all the electronic parts on the robot, including the controller and the motors. With the structural subsystem as the robot’s skeleton, and the motion subsystem as the muscle, the power subsystem is the circulatory system that provides the rest of the robot with energy.
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Battery Extension Cable

This 12" battery extension cable allows for greater flexibility in robot design. Now you can design a battery compartment into your robot regardless of where the microcontroller is mounted.

  • Designed for either of the VEX 7.2V Robot Batteries
  • Mounting plate makes a permanent battery fixture easy

Our Price: $4.99
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7.2V Robot Battery NiMH 3000mAh

This VEX 7.2V Nickel Metal Hydride Battery provides a higher-capacity, rechargeable power source for use with your VEX robots. This is our recommended battery for VEX Robotics Competition robots.

  • Capacity: 3000 mAh
  • Rechargeable Nickel Metal Hydride (NiMH)
  • Standard VEX power connector

WARNING: Make sure your charger is capable of charging NiMH Batteries. If using a VEX Charger, the VEX Smart Charger MUST be used to charge this battery! DO NOT use the discontinued VEX Fast Battery Charger to charge NiMH Batteries.

Our Price: $29.99
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AAA NiMH Rechargeable Battery (6-pack)
A 6-pack of AAA NiMH Rechargeable Batteries designed for use in the VEXnet Joystick.

Our Price: $12.99
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Power Expander

Use the VEX Power Expander to add a secondary power source for four of the PWM outputs on the VEX Microcontroller. Balance a robot's motor load across two batteries to extend robot run time and increase performance.

  • Attach a 2nd battery to your robot.
  • Power up to four (4) Motors or Servos
  • Reduce motor load on primary battery
  • Run your robot for longer!
  • Protected by an Internal Circuit Breaker
  • Status port provides feedback to Microcontroller
  • Monitor when your robot trips its breaker
  • Monitor battery voltage
  • Feedback LED shows battery and circuit breaker status
  • PWM Slide Lock keeps cables from coming unplugged

Our Price: $49.99
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Battery Strap (2-pack)

These Battery Straps are used to mount the 7.2v battery to your robot. The strap is reusable. Two Battery Straps and Mounting Hardware included.

  • Securely mounts one 7.2V battery.
  • (2) Battery Straps.
  • Mounting Hardware included.

Our Price: $4.99
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VEXnet Backup Battery Holder

The VEXnet Backup Battery allows you to mount and connect (1) 9V battery. This battery keep VEXnet alive when the main battery fails.

  • Works with the VEX Cortex Microcontroller.
  • Works with the VEX ARM9 Microcontroller.

Our Price: $9.99
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Smart Charger v2 w/ Power Cord

The VEX Smart Charger v2 is capable of charging ALL VEX rechargeable power packs.

  • Charges both 7.2V and 9.6V batteries
  • Charges both NiCd and NiMH batteries
  • Includes dual charge rates and an automatic shutoff

WARNING: The VEX Smart Charger MUST be on the SAFE setting to charge the 7.2V Robot Battery NiMH 2000mAh, P/N: 276-1456.

Our Price: $18.99
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VEXnet Joystick Power Adapter

Extend your runtime by powering your VEXnet Joystick directly from a wall outlet. Simply connect this adapter to the VEXnet Joystick's programming port and you're good to go for hours and hours.


Our Price: $12.99
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8-Bay AA/AAA Smart Battery Charger

This Smart Battery Charger is capable of charging up to eight Ni-MH or Ni-Cd rechargeable AA or AAA batteries. Smart Charger technology provides automatic trickle charging and temperature cutoff during the charge cycle while LEDs provide user feedback on the status of each charging battery.


Our Price: $24.99
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