Description: Product: This is a 12V Lithium Battery Protection Board, suitable for ensuring the longevity and safe of your lithium batteries.Material: Made of PC Polycarbonate material, this battery protection board is designed to withstand regular use while maintaining its integrity.Product Dimensions: With a compact size of 86*56mm, this battery protection board can easily fit into various setups without taking up too much space.Feature: The product features a 4-string 12V lithium iron phosphate battery protection board, offering stable performance and safe for your devices.Function: Overcharge and discharge protection to prevent overcharge and discharge of the battery. Overcurrent protection to prevent abnormal high current of battery Specification: Material: PC Size Chart: 8.6cmx5.6cm/3.39inchx2.20inch Package Includes: 1 Piece?Battery Protection Board 1 Piece?Connecting Wire Note: Please allow slightly errors 1-2cm differences due to manual measurement.