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FreeNove 4WD

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Answer

Your batteries might be fake.

I googled the 4WD datasheet which says the following about batteries:

1. 4WD Smart Car Kit for Raspberry Pi 

... Both flat and button top 3.7V 18650 batteries with discharge current >10A.

... For 18650 capacity, it should be 2000~3500 mAh. A bigger capacity may be fake.

References

(1) Freenove 4WD Car Kit for Raspberry Pi [Overview] 27,622 viewsOct 18, 2019

(2) Freenove 4WD Tutorial for 4WD Car Kit FNK0041 4,957 viewsMar 9, 2021

(3) Freenove 4WD Chapter2 Assembly & Chapter3 Test Freenove 4WD Pi Car 6,545 viewsAug 20, 2021

(4) Freenove 4WD Smart Car Kit for Raspberry Pi 4 B 3 B+ B A+, Face Tracking, Line Tracking, Light Tracing, Obstacle Avoidance, Colorful Light, Ultrasonic Camera Servo Wireless RC – Amazon us$70

(5) Freenove 4WD fnk0043 Tutorial pdf – FreeNove

.END

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