I’ve got a 2016 v650 with oxford heated grips and an oem lighter plug I use to charge an iPhone. On a recent 280 mile trip I found after each stop my starter was sounding weaker and weaker. By the time I got home, barely enough juice to start. I put it back in the Optimate and it passed all the tests. I hooked up a multimeter and I get normal readings (12.4 at battery terms when stopped, 13.4 at idle, won’t go over 14.2 when revving.) Is it possible that these two accessories are drawing down faster than the system can recharge? I hope not because I was hoping to add some auxiliary lights as well!