I'm having this weird charging hiccup. Whenever I plug in, it stops after just around 10-15 minutes, saying its hit the target range – but trust me, it hasn't. Then it tells me to remove the charging connector like it's all done. What gives? It was working fine for a solid 3 months, and now it's acting up out of the blue. Any ideas on what might be causing this glitch and how to fix it?