There's already a button to fully recharge the shield, however if you have several types of batteries in the inventory, it usually spends 2-3 small lithium cells, or starts with a fusion cell followed by lithium cells. When you need to do this quickly and fully recharge the shield with a greater battery (for example, when just disengaged from combat or exploring ice t.), you still need to select "recharge item", then move and click on the shield emitter. Would be useful to add fourth action to assign recharging shield for all types of batteries to do this instantly.
