HiKOKI 10.8V 4Ah 1 pc Charger System Case 2

My cordless tacker broke during work, and I needed it by tomorrow, so I bought one on Amazon. However, the main unit alone would have taken 3 days to arrive, so I reluctantly purchased a set. This is the item that came with the set, excluding the main unit.
For some reason, the set arrived the same day, so I had no choice but to buy it.
The case, battery, and charger are all brand new and unused.

Thank you.