Standard EB‑BN985ABY battery fully compatible with Note20 Ultra.
Replacement involves removing back glass, old battery, cleaning adhesive, and installing new one.
OEM battery reduces swelling risk and ensures safe fast charging.
Replacement takes about 30–60 minutes at reputable service centers.
OEM battery costs around $15–30 (≈300k–600k VND).
Post-replacement testing includes temperature, charge current, and battery performance.
Recommended: avoid impacts and use proper chargers to prolong battery lifespan.