Orion wrote:Stew63 wrote:For my UltraLight hiking kit I use a Fenix HL05 headlamp that weighs in at only 12grams...
Did you weigh it? It would be more like 19g if you believe the manufacturer's website specification.
They say 13g empty and CR2032 batteries weigh 3g each.
My keychain LED doesn't have a strap which probably accounts for the 7g difference. A strap is a distinct advantage. Also it's sometimes hard to find the thing since it's so small. But in full power mode it's surprisingly bright, twice the lumens of the HL05. It is sufficient for travel over terrain that isn't too demanding.
The main problem with coin cell battery headlamps is how long they last in higher intensity mode.
I tried weighing the HL05 just now - hard to get a definitive answer without using precise lab scales - but with the excess headband cut off and batteries it's about 16gm. My 6gm Photon Micro (keychain light) although greater in lumens than the HL05 tends to throw those lumens everywhere - like a lantern - great for lighting up a whole tent but without being adaptive to any headstrap and being only a small 'flood light' is a bit limited in practical use. The HL05 on the other hand focuses the 8lumens it's got into somewhat of a beam (in comparison) - the adjustable/tilting head, the elastic headband, high/low white, red led, and ease of battery replacement without doubt makes the HL05 much more convenient for me - but I still carry the 6gm Photon Micro as a backup. Although the HL05 is only 8lumens (max) I can
easily read a book on low (4lumen?) and easily get around the campsite, cook dinner etc. on high. I generally find it useful for a 3 night trip in summer before batteries need to be replaced.
I realise 8lumens will not suit most people who like 100+ lumens to light up the whole campsite but it mostly works just fine for me with the HL05. Depends on who with/what I'm doing really on a hike as to which light I take along.