3.7V 820mAh Lipo battery 603042 Rechargeable Lithium Polymer Ion with JST Connector.Make sure the polarity of device matches before purchase

1.Please make sure the JST connector on your device is in the same direction as our JST connector (see product photo) before you buy. Basic Information: Voltage: 3.7V Typical Capacity: 820mAh Minimum Capacity: 770mAh Weight: Approx. 16g; Dimension: 30.5 x 44 x 6mm/1.2 inch x 1.69 inch x 0.22 inch (L x H). 2. Storage and use: keep the battery at 40% to 60% load during long-term storage. We recommend charging the battery every three months after receipt and maintaining the voltage of 3.7-4.0 V. Store the battery in a cool, dry place. Suitable for Bluetooth speakers, dash cameras, Wi-Fi smart home systems, PDAs and digital cameras, GPS, tracking devices and pulse monitors. 3. It consists of a high capacity A+ lithium battery, precision IC overcharge and an overcurrent short circuit protection plate, high temperature resistant silicon wires and a JST connection module. 4. Please distinguish between positive and negative poles. For some products, the original battery plug does not match, it is okay. You can cut and weld the connector directly or use our shrink insulation sleeve to connect wires with the same positive and negative poles. 5. If there are quality problems within one year, please do not hesitate to contact us by email.