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Khepera IV external charger pack

    Khepera IV external charger pack:

    K4 ext charger with battery

    The K4 external charger pack is an option to the expansion board. Composed by two batteries, an external charger and a power supply. It is used to add autonomy to the Khepera IV robot. The additional battery of 3600mAh adds about 5 hours of autonomy to the Khepera IV. It is particulary indicated when you use a Stargazer and / or a LRF module, in order to save the autonomy of the robot.

    Another advantage is that you are able to change the additional battery while the nattive battery inside the robot is still powering the robot, making unnecessary to restart your robot and allowing you to run a virtualy  unlimited experimentation time.

    The additional battery is plugged into the expansion board (not included in the K4 external charger pack).

    The pack include two additional batteries and the charger which can charge up to 2 batteries in about 4 hours.

     

    Here is a brief summary of the gain of autonomy with the additional battery :

    Setup Autonomy without additional battery Autonomy with additional battery
    KheperaIV alone about 7 hours about 12 hours *
    KheperaIV with LRF about 5 hours about 8.5 hours *
    KheperaIV with StarGazer
    about 4 hours about 7 hours *
    KheperaIV with LRF+StarGazer
    about 3 hours about 5 hours *
    KheperaIV with Gripper
    about 4 hours about 7.5 hours *
    KheperaIV  with Gripper+LRF+StarGazer
    about 2.5 hours about 4.5 hours *

    *Time indicated above are average, depending of the CPU and motor use.

    K4 battery K4 ext charger
    Additonal battery (the pack includes two of them) External charger, it can charge up to two batteries in the same time in about 4 hours.
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