Well, i want to hack my inventory slots but neither gibbed save editor nor cheat engine with Borderland2 table do work. After reloading. squirrel - 7 years ago 0 2. you can get a total of 57 slots without dlc, the first 5 claptraps of the second playthough have a chance to drop one. You reset to. The original total maximum inventory slots is 57 on the game disc alone, but with Playthrough 2 has not yet been seen to reward another backpack upgrade.