Remote Gadget Pocket is a gear perk that raises how many remote gadgets you can carry. If you rely on remote explosives for ambushes and convoys, it means fewer trips to resupply.
You hold more remote gadgets at once. That gives you spare charges for a second target after setting up the first.
Wear the Breach & Clear Vest or Walker's Wolf Vest. Gear perks are fixed to the piece of clothing that carries them, so you get this one by wearing that piece, not by unlocking it in a menu.
Remote and Proximity Damage Booster raises the damage of each charge, so together you carry more and hit harder.