No, the KATANA-AIR series' built-in battery cannot be replaced separately due to its design.
CAUTION: If you disassemble this product (except as instructed in the Owner's Manual) or modify it or any of its accessories, we cannot guarantee its performance afterwards. Additionally, we might not be able to provide repair services.
NOTE: Charging issues may not always indicate a battery malfunction. Factors such as ambient temperature or prolonged disuse can also affect charging performance. If you are unsure whether the issue is caused by a battery malfunction, please reach out to us through Backstage (Roland Account required) or consult a local authorized dealer.