Welcome to my tennistools.com

Call us now!

Offices are closed Oct. 7th to 11th. Orders placed October 7 to 11 will be shipped on the 12th

External Battery



Incredibly small but powerful, the “intelligent” Rav 6750 mAh battery extends recording time from native 2.5/3.0 hours to more than ten hours.  Stay on one court all day, or move the mount from court to court without ever turning it off.  Yes, it’s that easy!

Battery and QM-1

What the Battery comes with.

The Battery hangs right next to the camera!

Battery hangs right on the adjusting knob – very convenient!


The RavPower 6700 mAh Battery

Small but Powerful!


Depending on supplies, and ss an alternative, the equally powerful Anker of the same size may be substituted.



There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.