My Instinct Solar is a little over a year old, but lately, it seems like once it gets to around 50%, the battery drains really fast. Last night, 17 days estimated battery life, this afternoon only 10 days, and this has been the pattern for a few months now. At some point, the battery estimate goes down another day every hour or so.
Is there a way to get the battery health status to check for degradation? I'd be really surprised if the battery is degraded this quickly, though. It might have two dozen charge cycles on it (plus whatever the sun added to the charge on days when I'm riding).