PROBLEM â€“ Whilst in tight situations underground, the battery case has a habit of falling off by slipping out of its elastic headband. Probable cause is due to the attachment slot being too wide.
” title=”Razz” /> SOLUTION â€“ My solution is to cut 4.8mm dia heatshrink the same width as the elastic. Place this over the two posts bridging the slot. Apply heat to shrink and you then have a very securely attached elastic headband.