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V E X Batteries. 2000 mAh “Little” Robot Battery. 3000 mAh “Big” Robot Battery. This battery lasts the longest, but it also takes the longest to charge. Use it in competitions. This battery doesn’t last that long, but it charges quickly. Use it for practice. Think About It…. - PowerPoint PPT Presentation
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J.M. Gabrielse
VEX Batteries
J.M. Gabrielse
2000 mAh “Little” Robot Battery 3000 mAh “Big” Robot Battery
This battery doesn’t last that long, but it charges quickly. Use it for practice.
This battery lasts the longest, but it also takes the longest to charge. Use it in
competitions.
J.M. Gabrielse
Think About It…
• Wouldn’t it make sense to use the battery with a larger capacity?
• Batteries are “packages” of chemical Potential Energy (PE)
• PE - stored energy
• Therefore, the more potential energy you have the more Kinetic Energy (KE) you will have that can be converted for longer lasting game play!
• KE – energy of motion
J.M. Gabrielse
Smart Charger(It shuts off automatically)
J.M. Gabrielse
Smart Charger(It shuts off automatically)
Safe mode: Use this! This mode is designed to make batteries last longer.
Fast mode: Only for competitions. It can reduce battery life.
“No Light” – either the battery or the charger isn’t plugged in“Charging” – battery charging“Full” – battery is done charging
J.M. Gabrielse
AAA (Joystick Battery) Charger
The charger can charge 8 AAA or 8 AA batteries but the joysticks only use 6 AA batteries.
J.M. Gabrielse
Joystick Batteries
1. Remove the VEXnet key
2. Unscrew the battery compartment
3. Remove the batteries and place on the charger
2
1
3
J.M. Gabrielse
Red Lights = Dead Batteries(on the robot & the joystick)
(red) Main Battery = Dead (<5.5V) or CORTEX Off
(yellow) Main Battery = Low (<6.5V)
(green) Main Battery = Good
Solid All Good: Both Joysticks connected
Solid + 1 Blink All Good: Tx1 Joystick connected
Fast (red) [3] Fault: Low Backup Battery (0V-8V)** * The robot light on the joystick only works if the VEXnet light is green
** no backup battery is only indicated if the competition cable is connected
(red) Joystick Battery = Dead (<5.5V) or CORTEX Off
(yellow) Joystick Battery = Low (<6.5V)
(green) Joystick Battery = Good
Fast All Good: Both Joysticks connected
Solid One Joystick in use * no backup battery is only indicated if the competition cable is connected
Robot Light *
Joystick Light
J.M. Gabrielse
Charge Batteries Every Night
• Put the joystick batteries on the charger before you leave.
• Put the big battery on the charger before you leave.
• Put the little battery on the charger when you first arrive in the morning.
&
J.M. Gabrielse
At Competitions
After every match:
1. Turn off the joystick*.
2. Put your old battery on
the charger.
3. Put a fresh battery on
the robot.
* If you forget to turn off the joystick your batteries won’t last for the whole competition.
J.M. Gabrielse
Backup Batteries
• Sometimes the robot loses power for a second.
• The backup battery keeps the robot from restarting.
• Only use for competitions.
Plug into the Cortex Microcontroller.
One 9 V battery should last all day.
J.M. Gabrielse
Resource
• Vex Inventor’s Guide (Insert): Smart Charger • 1
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