No matter how long I leave the Fuze+ charging for, it never charges to 100%
Battery meters aren’t all that accuarate. As long as its getting over 90-95% its probably fully charged.
I had that with my Clip+. To recalibrate the battery meter and get the battery to work best, you should run the battery down to around 20% or so each time for 2 or 3 charge cycles before charging it.