Coops Read the ITEM DESCRIPTION. What you are asking is listed there, as well as a lot of other information.

Coops it is rated 20 Amps. Of course it does not measure 30 or 40 or 50 ampere. if you read item description, you do not need to ask questions like this.

Coops The battery is 3 cells Li-ion, pack rated 12 Volts. The capacity will be about 1500 mAh, as these need to be High Current cells, not high capacity 3000 nah cells like used in laptop, etc.

Coops You can use it anywhere you choose! This product does not have any "Usage Lock" that prevents you from using it in ANY location. You can use it in your toilet, in the car, even inside a bird cage. So, why ask an unecessary question?

Coops Yes, the Item Title, description and photos all show "with air assist" compressor. Note this is the AP30x compressor, which runs from 110V or 220V and not the 12V Air used in the S30 which is powered by the engraver's 12V 7A power supply.

Coops This is not a laser. It is a motor that turns a tool like a twist drill or router bit that physically cuts the material.

Coops No, to cut deer antlers you need to use a saw. It can engrave (burn) into flat areas of antler. the surface must be flat within (say) 5mm because the laser needs to be focused at a single height thoughout each session. You can engrave cylindrical items (like a straight parallel section of antler, or a ceramic cup) by buying the rotating rollers accessory.

Coops 5W diode laser, they claim comparable to 100W CO2 laser

Coops You can use a Laser Marking Spray like "Cermark" which will melt into the surface. After marking, you wash the remaining color off and leave the layered areas "permanently" marked.

Coops Diode lasers cannot engrave clear materials. You can apply a spray (laser marking product) that will fuse onto the surface, or you can apply black spray paint and the laser will burn that and melt the plastic underneath.

Coops It won't cut even 10mm thick wood in one pass! However, multiple passes are not difficult to program.

Coops if you want Imperial markings, then choose the IMPERIAL OPTION. If you want Metric markings, then choose the METRIC OPTION. There are 2 choices, and they are both approximately the same size (300mm or 12 inches).

Coops They usually use a shorter cell, perhaps 18450 of about 1200mAh capacity.

Coops Ask CUSTOMER SERVICE !!

Coops Two batteries, which is what is written in the description. If you read, you won't need to ask questions.

Coops Read the Product Description !!