Author Topic: Cannot charge Khepera IV with contact pads  (Read 6876 times)

chrisb27

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Cannot charge Khepera IV with contact pads
« on: May 24, 2017, 04:48:12 PM »
Hi,

I'm trying to make a charging/docking station to charge a Khepera through its contact pads on the bottom. However, when connecting the 9 V and ground pads (either 2&4 or 7&5) directly to a power supply, the robot doesn't charge. The red charging status LED doesn't turn on. The robot doesn't pull any current either.

I've tried with two different Kheperas and confirmed that their battery charge state was low enough to start charging with the AC adapter.

The user manual doesn't seem to mention anything else. Can you help?



Thank you!

Chris

kteam

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Re: Cannot charge Khepera IV with contact pads
« Reply #1 on: May 29, 2017, 09:53:07 AM »
Hi,

which voltage did you apply to the PAD? it must not be lower than 9V to work correctly (as the battery has a 8.4V voltage at the end of charge).
You can set your power supply to 9.5V to be sure (even 10V).

Actually the external power supply provided with the Robot, deliver 9.3V to compensate the voltage drop in the cable at full load.

Best regards
K-team