Describe 1. Simple and easy to use: Simple operation, just insert the device into the battery liquid to read the test results immediately. 2. High precision: Adopt advanced technology, which can accurately measure the density and concentration of battery fluid to ensure accurate test results. 3. Multifunctional: It can not only test the density of the battery fluid, but also test the status and performance of the battery, helping users to understand the health status of the battery in a timely manner. 4. Portable and compact: small and lightweight, easy to carry and use, suitable for all occasions and environments. 5. Reliable: made of materials, long service life, ensuring long-term stable testing. Package includes: 1*Battery fluid density meter