This allows for long exposure photography in astrophotography without worrying about battery drain. Purchased February 2024. Used 3 times, and in perfect working order. This is an accessory that powers Fujifilm cameras via a power outlet instead of a battery. I am selling it due to a change in equipment. I purchased it on Amazon, and you can find the exact product by searching for the following name: F1TP [PSE//Strong Compatibility] CP-W126 AC Power Adapter + DC Coupler Charger Kit (NP-W126 compatible dummy battery) For FUJIFILM X-A1 X-A2 X-A3 X-A5 X-A10 X-E1 X-E2 X-E2S, X-E3 X-H1 X-M1 X-Pro1 X-Pro2 X-T1 X-T2 X-T3 X-T10 X-T20 X-T30 X-T100 X100F HS30EXR HS33EXR HS35EXR HS50EXR