If you’re looking for additional Fujifilm NP-W235 batteries many of the generics are on sale right now. I personally picked up the Wasabi two-pack with charger (Make sure you apply the coupon too) for my Fujifilm X-T4. I have used Wasabi batteries in the past problem-free across multiple X-mount cameras so I have the most faith in their compatibility and reliability, but the others are probably good choices.
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Fujifilm X-T4: B&H Photo / Amazon / Adorama
