The controller cable on the ebike linking the controller and the display had started to concern me. There is a considerable amount of tension on it which suggested something might cause it to fail; probably at the joint.
I found an extension cable from an online seller
Which solved the potential problem
Next problem was the head torch. I bought one online for $6. The specifications stated it was powerful. And it was!
Unfortunately it only took 30 seconds before the light started to dim. Looking at it I suspect the battery was a single Li-ion 3.7V 18650 cell. After dismantling the torch my assumption proved correct. A single 18650 cell with no plastic shield. It would be hard to look much cheaper. Using the iMax battery condition I tested the cell which revealed it had a capacity of 13mAh. A good 18650 cell has a capacity of 2400 – 3500mAh. Obviously the one from the torch was a cheap dud.
Rummaging through my boxes of ‘stuff’ I found a spare cell which I soldered and fitted to the torch before reassembly.
Now I have a head torch which illuminates for more than 30 seconds.
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