lol you get healed for 44 hp every 4 mins ... hahaha

not really ... no clue how much, but it gives some more i think

I get healed around 350 at 180ish :( far too little to be of any use

I get healed almost 500 at lvl 115. Think it depends on your first aid skill. Not sure.

Attack skills
First aid 100 %

So generally, higher first aid you have, the higher this heal is. Still useless imo, but a nice boost at times. I'd still prefer to put my perks elsewhere.

looks like it heals First aid / 2

it's a little higher than that, actually... ~1k first aid it heals for ~850 for me...

Heals 543 points for my lvl 100 toon with 690 first aid skill.
My ql 125 heal kit heals for 627.

So it's less than, but close to a heal kit for me. 4 Minute recharge though.. good for minor emergencies, although I'm playing healing-oriented.

According to my rough calculatins:
First Aid Skill / 1.27(ish) = how much this heals for

So theoretically, this could heal the same or more than a ql 200 heal kit eventually if you have high first aid. The only downside would be the 4 minute recharge... but that's to be expected, for what is essentially a second heal kit.

Ilikebunnies numbers seem about accurate, with 1130ish first aid skill this heals me for approximately 900. It's not much, but for a class like fixer its the only healperk available if you aren't solitus, when some opponent gets you low and thinks its over, nothing like hitting this perk, a first aid, battle prepared kit, suddenly healing yourself 3k and turning around on em :)

Also, you can use this perk while capping points inside the battlestations, to let you sustain APT fire and whatnot. Can also be used on others, useful for saving a friend sometimes. Just make sure you target yourself though, else you will heal the guy you're trying to kill :p

Confirmed with a test.. although the forumula seems more accurate as 80% of your first-aid skill (first-aid * 0.8)

awesome perk, heals for 1200ish with 1500ish First Aid