Features: *Always know how much energy your battery has: The capacity indicator module shows the charge level in real time. *Compatible with different battery types: Use it for lithium, nickel, lead and polymer batteries. *Easy to adapt to your needs: The module is preset for 1S batteries but can be adapted for up to 8S batteries. *Easy installation: Simply connect the module to the positive and negative terminals of your battery. *Versatile: Use the module for electric cars, electrical appliances and more. Specifications: Material: PCB Display colour: green/blue (optional) Working voltage: 3-34V Working current: 5mA Operating Temperature: -20~50°C Compatible with: 1S, 2S, 3S, 4S, 5S, 6S, 7S, 8S Package Included: 2*Display module Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. 4PCS 3-34V 5mA Battery Capacity Display Module Charging Indicator Module 1S-8S Materials: Made of high quality materials, robust and durable, safe and convenient to use. Size: matched to the corresponding model to match your working tool needs, check if it is the size you need before you buy. Function: This is a good companion you need on your tools, giving you a more convenient working life, in case you are busy indoors and outdoors Satisfaction guarantee: Your purchase is fully protected when you order today. If you are not satisfied with with our products, contact us any time, We will get you back within 24 hours try our best to make things right.