I am also a far of the D4. Charges AA, AAA, C, 18650 and does them very well.

Interesting. I found myself only ever charging two batteries at a time so I bought the Nitecore D2. It charges just about anything (Li-Ion IMR Lifepo4 Ni-MH Ni-Cd 26650, 22650, 18650, 18490, 18350, 14500, 16340, AA, AAA, C).

BTW, the 1500 lumen Solarforce K3 with two 18650 batteries ended up in the truck after I picked up the M3 (also with two 18650 batteries). So I bought a second Nitecore D2 for the truck. Face it, if you normally do all your battery charging at home, but unexpectedly need to recharge batteries away from home, it's cheaper to buy a second charger than another set of Li-Ion 18650 batteries. So if I can stretch the imagination a bit and call my truck kit "EDC", I EDC a Nitecore D2. Okay, not EDC, but once you go to rechargeable batteries, having a charger is sorta critical.

Russ.. have you run the M3 long enough to get it hot yet?

No, haven't gotten the SF K3 hot yet. I was interested in how long it would take to heat up when I used it, but it apparently takes longer than you'd think; the cooling fins seem to work well. It may take a dedicated test to determine.

How long does it take to get the SF M3 hot? Even though the fins seem about the same, the K3 head is a tad bigger in diameter which probably puts heat build-up about par with the M3.

On the subject of high output lights and heat, there is a warning on the ThruNite TN12 to limit max output to 10 minutes. 1000 lumen is a lot of light out of such a small head with no cooling fins, so 10 minutes is understandable.

Adding a jacket, ( insulating, waterproof or both) to bags. Keeping warm/ dry is important

Clothing items are seasonal things that come and go in my edc. I have a compressed vest and a compressed coat, both down, for the cold times, a stuffable rain jacket for the wet times, and a brimmed hat and light cotton vest for the warm sunny days. Since space is a limit, things get replaced one season to the next.

I always keep an umbrella in my edc here.

Brilliant. Thanks Alex!

Because I've been commuting by bike and foot, I added a florescent orange rain jacket with hood to my EDC pack, to help stay warm, dry and visable. It doesn't take up much space or weight in my pack or on my bod. Perfect for our unpredictable Spring weather.

Spring in my neck of the woods generally means that we can get a summer heatwave & winter snow storm in the same day, so dressing for all the extremes is key if you're like me and commuting on foot. (This year it's been very cold, wet and windy.) My EDC pack also holds a thin long-sleeved merino wool hoodie, merino wool hiking socks, a pair of silk long john bottoms, winter hat, baseball hat, insulated mechanics gloves, silk liner gloves and a buff. (I also carry a GI poncho, but for shelter purposes rather than for rain wear.)

I'm on the look-out for new rain pants for this pack, but decided to keep a complete change of clothes at work instead.

BPJ, you might find a Gatewood cape http://www.sixmoondesigns.com/tarps/GatewoodCape.html an upgrade to a GI poncho. No personal experience, but there is probably one in my future...

Thanks hikermor! That looks pretty sweet!