Rc remote control battery

[Eagle430]

I have a mavic 3 with an rc remote control ( not the rc pro..!!) I dont know how much the battery of this controller last, but I think on mine is starting to get weak. Last time I used 3 batteries (fully charged) on my drone , and the controller from fully charged it stayed with one green light on (I think is approx 25% battery left) is this normal to last only for about 3 batteries? I dont know also if dji can change its internal battery?

 

[Cafguy]

You can change the Battery....When it time....... Yours sounds like it could be getting there. PARTS for DJI are becoming collectors items in the U.S. and my advice to you is to go ahead and get the battery now! swapping the battery is simple!