i believe this has been discussed in quite a few other threads.
if my memory serves me correctly, you wont overcharge the RC batts.
if you charge them for 15-24hours, you should be good for about 6hrs+ running the UA5 with phantom. i have no clue how long the UA5 will last without phantom, which is how i run it, but i might try and test it one day.
btw, i have the same set as what you have in the pic above in your post.