Rechargeable Li-ion Battery 18650 (3.7V ,1600mAh to 1800mah) used

From the shop's description

Rechargeable Li-ion Battery 18650 (3.7V ,1600mAh to 1800mah) used is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. Rechargeable Li-ion Battery 18650 (3.7V ,1600mAh to 1800mah) used Features: Type: Li-ion 18650 (Used – Tested) Voltage: 3.7V Capacity: 1600–1800mAh (approx.) Rechargeable with usable cycle life Cost-effective alternative to new cells Ideal for DIY battery packs & power banks Suitable for robotics & electronics projects ⚠️ Important Note Used battery — capacity may vary within range Cosmetic condition may differ Recommended to test before critical use