Nine-layer protection, all-round protection of lithium battery pack, more worry-free use. Strong stability, high and low temperature resistance, high precision, and quick response. Power aluminum substrate, strong overcurrent, high thermal conductivity and fast heat dissipation. High-power bidirectional , ultra-high-power resists high current and reverse voltage shock, all-round protection MOS tube , making overcurrent and high current more stable. Support Bluetooth APP, one-click automatic balancing. Name:Lithium Battery Protection Board Applicable battery:for Ternary Continuous current:100A current:300A High current accuracy, honeycomb heat dissipation, power board isolation design. The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:Aluminum substrate Package Contents: 1 * Protective Board Kit 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.