Features: _x000D_ 1. Adopt intelligent lithium cell management IC for fast and safe charging. _x000D_ 2. With balance charging to balance the characteristic of each battery in battery pack and prolong battery life. _x000D_ 3. Provide a variety of protection functions including overcharge, overdischarge, short circuit, and temperature protection. _x000D_ 4. Equipped with thickened aluminum fin to achieve quick heat dissipation. _x000D_ 5. This product has gone through load and aging test for quality assurance. _x000D_ _x000D_ Specification: _x000D_ Discharge current: 45A _x000D_ Battery type: 3.7V lithium battery _x000D_ Weight: Approx. 82g / 2.9oz _x000D_ _x000D_ Package list: _x000D_ 1 x Lithium Battery Protection Board _x000D_ _x000D_ _x000D_ Note:_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.