1. Easy Operation: The lithium battery tester board is compact in size and lightweight, making it easy to carry and ready to use anytime, anywhere. Its plug-and-play design ensures simplicity and convenience for all users. 2. Clear Indication: Equipped with high-brightness LED lights, this lithium battery charger protector module offers clear and vivid indications. This feature allows you to easily identify any issues with the battery, enhancing the troubleshooting process. 3. Quality Materials: Made from high-strength fiberglass for the PCB board, this wiring detection light board offers robustness and long-lasting durability. Its premium quality construction ensures resistance to wear and tear, adding to its overall lifespan. 4. Lithium Battery Testing Made Easy: With this lithium battery charger protection board, testing lithium batteries becomes a straightforward task. It clearly indicates whether the cable connections are correct, preventing potential damage due to incorrect setups. 5. Preventive Solution: The li-ion battery protection board functions as a preventive measure against incorrect wiring by users. It provides a fail-safe way to ensure correct connections without the need for additional checks, saving time and reducing potential errors. Lithium Battery Test At A Glance. Clearly Judge Whether The Cable Connection Is Correct Or Not. The Function Of The Testing Board: To Prevent The User From Wiring Errors, No Need To Check, The Led Indicator Can Clearly Determine Where The Wire Is Wrong. This Can Avoid Burning The Battery Protection Board. Suitable For: 3 x 17 Series Lithium Battery Packs Plug Specification: PH 2.0 Accessory Type: Charger Accessories Colour:Green Material:PC Package Contents: 1 x Lithium Battery Tester Board(Due to different product batches, the appearance may vary, which does not affect the use) 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.