Assuming that is the Vamped "
most powerful 40 amp battery on the market" it's actually a 20 amp continuous battery.
I hate this BS, it's 40 pulse, 20 continuous.
Is it safe for your Sig 150w?
Well seeing as Sigelei themselves suggest using a 30 amp continuous battery, you might be better off getting some VTC4's from
rtdvapor or something.