Mobile Universal Battery Charger LCD Indicator Screen For Cell Phones USB-Port **AbleGrid Trademarked** We have the brand "ABLEGRID"!Brand new.In stock.Ship from CA. Note: This Charger Just Fit For The Battery (32mm&lt;=width&lt;=55mm) How does it work?1. Place your battery under the YIBOYUAN clip with battery contacts facing pins. 2. Line up your battery''s positive and negative contacts to the pins. A: Most batteries are labeled positive (+) and negative (-). B: If yours is not, start with the outside contacts. 3. Slide the battery until the both pins are touching the battery contacts. A: The LCD will light up if it has a good connection. B: If not, adjust the pins and try again. 4. The battery is fully charged when the LCD shows four solid bars.