High-capacity 5000mAh lithium polymer battery ensures extended usage for OPPO A53 (2020 model) with stable power output. Precision-engineered BLP805 cells feature advanced circuit protection against overcharge, overheating, and short circuits. Original-grade polymer materials enhance durability with 500+ charge cycles while maintaining 80% capacity. Ultra-thin 8.5mm design preserves phone"s original form factor without bulk. Professional-grade copper-nickel alloy contacts ensure optimal conductivity and corrosion resistance. Ideal for heavy users needing all-day power for streaming, gaming, or business applications. Factory-calibrated voltage (3.85V) matches OEM specifications for seamless compatibility. Includes shock-absorbent packaging for international wholesale shipping safety. Bulk pricing available for resellers and repair shops with MOQ discounts. CE/RoHS certified for global market compliance.