Reddit mentions of DEWALT DC411B 4-1/2-Inch 18-Volt Cordless Cut-Off Tool (Tool Only)

I use a cordless right angle grinder with an abrasive cutoff wheel. There are some padlocks that can take hammer blows and have boron shackles that break bolt cutter jaws. Nothing resists the grinder.

haven't been booted yet but I keep this handy. Its hard on batteries but should be enough.

This cordless one would work fine, It takes about 30 seconds tops to get through something like that bike lock with mine. Wouldn't really be worth it to buy one just for this situation though

Worth keeping in mind that no matter how high-security a padlock is, it suffers from the disadvantage of being located entirely outside the structure and is vulnerable to attack. I have yet to see a padlock that could stand up to a hundred dollar battery powered right angle grinder with an abrasive cutoff wheel. It's probably not the answer you're looking for, seeing as how you're asking for free advice on the internet, but you really ought to spend a little more and perhaps get a professional to survey your door and suggest a way of installing the locking mechanism on the inside of the door, leaving only the keyed cylinder (or keypad or card reader) exposed on the outside. $200K worth of stuff really ought to be secured better than with a padlock on a sliding door.

Use your grey matter. Sigh. Shall we begin?

• r/lockpicking
  
• lock picking kits
  
• locksmith
  
• sledge hammer
  
• heavy duty hammer
  
• normal hammer
  
• chisels
  
• air hammer
  
• Dremel
  
• circular saw
  
• rotary cutter
  
• plasma cutter
  
• acetylene torch
  
• hydrogen peroxide (oxidizer)
  
• bolt cutter
  
• crowbar
  
• water jet cutter
  
• laser cutter
  
• thermite
  
• metal disintigration
  
• prayer
  
• get creative
  
  Did I miss any? No? Good. Post an update when you get the thing open.