does AOE Nano regen device add hits?

If I enter a battle where my heal device is active, will I be able to take more hits than if I don't have it on?
Does anyone know?

You would need the healrate/second of the ability. Then you could calculate, depending on the bullet damage and the rof, if you would benefit from it after all.

Health regen is so slow that I would guess you can take maybe 1 hit more when having it activated.

Depends on how fast you're taking damage. The ability heals at a constant rate, so if you're only getting hit sporadically the ability can keep you going for a long time. If you get hosed by a TRV at point blank range, however, it's probably not doing much for you.

Either way, there's no reason not to use it once you start taking fire, so I generally activate it as soon as I take the first hit.

I always use it when I'm under fire. I'm not sure if it works, but I think it does. So I guess that makes you feel more confident during a battle.

Should allow you one extra hit from most weapons at min and max damage ranges, but otherwise not really. Doesn't hurt though if your enemy happens to miss a few shots.

P4NJ got it right, ANY health regen(even the biolab one) will extend your lfie by 1 bullet.

It should be noted though that after the nanoweave change it stacks beautifully with the regen and can seriously extend your life at long ranges.