My Bicycle Commuting - USB rechargeable rear lights

Recently decided to switch to USB rechargeable lights as this would remove the worry of battery running out and keeping enough but not over stocks at home. However, the rear light failed to work properly after a couple of days.

The light will either dimmed or off after awhile without any triggering event.

Meddled with it for another two weeks and identified the issue that a connection on the circuit board is broken. By clamping a small wire on the board, I have, at least temporarily, solved the problem. It has been working for half a day, though only a short ride to buy dinner during this time.