I did several 7 to 8 hour runs for the last couple of days. Each run took 30 to 40% of the battery. So you'll have to recharge. Currently, recharging is not possible while wearing the watch.
Risky , because when I walk/run 48h during charging consume only little powerbank , works , but tracking is only line poor quality . I already inform Garmin via mail and forum 4,65 soft.
I suggest Turn off WiFi,blue, light 5% manual and use for tracking only gps because ultratrack mode show zigzag
Jan502: No matter what settings the OP uses, he won't get 4 days of tracking without recharging. And if you say there are some issues with tracking the activity while charging, then he doesn't have to do it while running. He can do it while resting and/or sleeping.
I use a cheap chinese unbranded powerbank and it works ok, but I've heard that some powerbanks do not turn on unless a device starts drawing current exceeding a certain threshold, and sometimes garmin watches do not exceed that threshold.
By 4 days, do you mean 96 hours of continuous running? If not, the expected number of actual running (or rather logging) hours would be valuable information.
