BN66 “BN66 6000mAh 3.87V Li-Polymer Replacement Battery for Xiaomi Poco C40” has been added to your cart. View cart Showing the single result Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low BN66 6000mAh 3.87V Li-Polymer Replacement Battery for Xiaomi Poco C40 Sale! $19.99 Original price was: $19.99.$15.99Current price is: $15.99. Add to cart