Pin sạc lithium 7.4v 5000mAh cao cấp, đa năng, dùng cho nhiều thiết bị rất tiện lợi (BT37)

This is a high-capacity 7.4V 5000mAh lithium-ion battery designed for multiple devices, with a lifespan of over 3000 charge cycles and safety features like overcharge and over-discharge protection.

• The description claims a lifespan of over 3000 charge cycles.
• The description claims safety features like overcharge and over-discharge protection.