Item Type: Lithium Battery Circuits Protection Board Material: PCB Board Application: LED Line Sequence Detection Applicable To: 3 to17 Series Lithium Battery Pack Product Size: Approx. 65 x 40 x 6mm / 2.6 x 1.6 x 0.2in Plug Specification: PH2.0 Features: 20 series 48V to 10 series Function: to Prevent User Wiring Errors, No Need to Check, LED Indicators Can Clearly Determine Where the Error Is. Avoid Burning out the Battery Protection Board.1Accurate Wiring: The lithium battery circuits protection board is made of PCB material, which is accurate and clear 2Scope of Application: The PCB integrated protection circuits board is used for lithium battery testing to clearly determine whether the cable connection is correct 3Easy to Use: The lithium battery PCB protection board module is install to use, no need for cumbersome wiring process, simple and fast to use 4LED Indication: The lithium battery protection board can prevent user wiring errors, no need to check, LED indicators can clearly determine where the error is 5Small and Compact: The small and compact body does not take up too much use space, which is convenient for storage and use 1 x LithiumBatteryCircuitsProtectionBoard