USE THE ROKU CABLE THAT CAME WITH THE DEVICE WAS MY LESSON LEARNED.
My remote stopped working tonight too—0% charge. I plugged it in with a compatible cable and USB plug and it showed as charging, but after an hour it would still only hit 1% or 2%. As soon as I used it, back to 0%. Frustration to the maximum. After 3 hours and reading that other folks were having the same issue, I remembered it came with a specific charging cable. I found it and hooked it up about an hour ago—strong even pulses on the green light and right now at 91% going up. Was 80% not long ago. Too bad I can’t locate the Roku AC adapter or I’d probably be done. Oops at 93% since I typed 91. USE THE ROKU CABLE WAS MY LESSON LEARNED.