Product Overview: Enhance the safety and efficiency of your electronic tools, wheelchairs, and vehicles with the series. Our advanced battery management systems () are designed to offer superior protection and balance for your lithium batteries. Balanced Charging: Ensures all cells are evenly, extending the lifespan of your battery pack. Wide Application: Ideal for a variety of applications including electronic tools, wheelchairs, and electric vehicles. and Reliable: Built to withstand rigorous usage conditions, ensuring long-term reliability and performance. Upgrade your device's performance and safety with precision-engineered solutions. Due to different batches, there may be differences in product appearance and printed text, which not affect use Specifications: 7S 30A 3.7V same port colour: As Shown material: Metal + Pcb Package Contents: 1 * Lithium Battery Protection Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.