I don't have a sage but it looks like a solid mod....The nice thing about mechs is if you keep them clean they will last almost forever....I've got my stingrays, caravella clone and my nemi's and I am more than happy with them...but they have no safety protection...it's just a battery and a tube so if you're running an Atlantis with a .5 ohm coil make sure you have a MINIMUM of a 10 amp limit IMR battery in it. 15-20 amp rating preferred.
This is where knowing battery safety is important and sometimes can be confusing. I'll try and make it simple
A .5 ohms coil running at a fully charged 4.2 volts on the battery draws 8.4 amps current. To be as safe as possible you want to only draw about 75 percent of your batteries "Constant Discharge Rate" (a fancy way of saying how much current the battery can handle safely continuously without stopping till it's dead,) so a battery with a 10 amp discharge limit will work because the max amps you can draw with that coil is 8.4. This will work fine but a 15-20 amp battery would be better as it wouldn't have to work as hard to get the same result. You wouldn't be putting as much stress on the battery because it has a higher tolerance...this also helps your battery live longer over time.
As your battery dies it will put out less volts and less current (a battery that has drained to 3.7 volts will only draw 7.4 amps current with the same 0.5 ohm coil.) With the price of good batteries like Samsungs and LG's running around the 10 dollar or less range for a 20 amp constant discharge current you might as well be safe and get a battery with a higher amp limit than just a 10 amp limit battery and have no room to go lower if you want to get into rebuilding in the future lower resistance than that.
You always want to choose your batteries on their constant discharge rate and not their "pulse" rate...the pulse rate of a battery may be much higher but it means that the battery can only handle that higher "pulse" current for a few seconds before it's overloaded. Pulse time can vary from a few seconds up to 60 depending on the battery but it is not something you want to gamble on. You always choose your batteries by their "continuous drain" limit and try and keep their amp rating 25 percent above the amps your coil will draw off of a freshly charged battery. Can you push a battery to it's limit? Sure you can, but constantly pushing a battery to it's max will burn the battery out much faster.
Playing the odds on "voltage drop" (voltage drop is the amount of power lost as it travels from the battery, threw the contacts, and in and out of the coil,) and "pulse limits" is like playing the odds at vegas....If you know all of this already than I am sorry to waste time and space...I just believe that it's better to be cautious and state something already known than not anything at all and have something go wrong
