Standard EB-BG781ABY battery compatible with S20 FE 4G & 5G models.
Replacement requires back glass removal, old battery removal, cleaning adhesive.
OEM battery reduces swelling risk and supports safe fast charging.
Replacement takes about 30–60 minutes at repair centers.
Parts + labor cost around $13–26 (300k–600k VND).
Post-installation tests: temperature, charge current, and capacity.
Use quality chargers to extend battery lifespan.