Originally Posted by
350htrr
Oh, please, What you need to do is put the phone in airplane mode, should now last 2 days... Get an external battery that can charge the phone 4+ times and viola. You are good go to for 10 days without plugging in anywhere, now you want to use the phone sometimes OK, you are still good for 5+ days without plugging in anywhere....
GPS is still sucking battery, as are whatever apps you are using, all dependent on the phone but I doubt you see two full days of use. As far as the batteries, what I did was buy one large (15000mAh or so) and two little ones (~4000mAh). All three cost about $30 total at Micro Center. Use the small ones for charging the phone, and recharge the small one not being used off the big one in a bag. Big one also had a quick charge port that could fully charge my GoPro at lunch, when the dang thing turned itself on and killed the battery.
Not sure I'd want to solely rely on that, though. I knew I had power every night, it was more to keep my toys running.