1、Adopt intelligent lithium cell management IC for fast and safe charging. 2、With balance charging to balance the characteristic of each battery in battery pack and prolong battery life. 3、Provide a variety of protection functions including overcharge, overdischarge, overcurrent and short circuit protection. 4、Equipped with thickened aluminum fin to achieve quick heat dissipation. 5、This product has gone through load and aging test for quality assurance. Features: 1. Adopt intelligent lithium cell management IC for fast and safe charging. 2. With balance charging to balance the characteristic of each battery in battery pack and prolong battery life. 3. Provide a variety of protection functions including overcharge, overdischarge, overcurrent and short circuit protection. 4. Equipped with thickened aluminum fin to achieve quick heat dissipation. 5. This product has gone through load and aging test for quality assurance.   Specification: Battery type: 3.7V ternary cell, lithium manganate cell, lithium cobalt cell Applicable voltage: 50V Charge current: 28A Discharge current: 30A Max continuous working current: 28A Overdischarge protection voltage: 2.6V Overcharge protection voltage: 4.25V balance voltage: 4.2V Temperature protection: Discharge 75℃, charge -7℃ Weight: Approx. 51g / 1.8oz   Package list: 1 x lithium Battery Protection Board Note: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.