What size mah for two dashcams?

[ellis456]

I want to be able to run my two dashcams when im away from the car, both are capacitor, would a power bank be able to run them both for say 9 hours? if so what size mah would work?. Thanks.

 

[DT MI]

I recently ran 2 SG9665GC cameras off of one of these for about 5 1/2 hours:

http://www.ipoweradd.com/poweradd-pilot-e2-12000mah-battery-charger-for-note-3-note-2_p1277.html

The 'flashing LED' power level indicators still showed over a 50% charge left. I'm not sure how accurate those indicators are but would assume they are reasonably close - at least that's what I want to believe.

To record for 9 hours you'll have to have at least a 64GB memory card or you'll be overwriting the earlier files after about 4 1/2 hours if recording at 1080P. Of course if you are using cameras with decent parking mode and have it turned on that's not as much of a consideration.