EEMB Lithium Polymer battery 3.7V 1100mAh 603449 Rechargeable lipo with JST connector VXI Blue Parrott - check the polarity of equipment and Before purchase

MUST CONFIRM BEFORE PURCHASE: 1.Battery size; 2. Connector model; 3.Connector size; 4. Connector Polarity - This is not universal! !! (This will cause a shortage if the polarity of the battery connector does not match your device.) BASIC INFORMATION—Voltage: 3.7 V; Typical Capacity: 1100mAh, Min Capacity: 1000mAh; Weight: about 22g; Maximum Size: 34.5 x 51 x 6.3 mm (LxWxH). RELIABLE PERFORMANCE - No leakage, excellent economic performance and long service life. PCM protection function: overcharging, over-discharge, over current, short circuit protection. CERTIFICATIONS—Conforms to UN 38.3. Over 400 EEMB batteries are UL certified. Search "MH20555" on UL for all EEMB UL Certification Information.//SERVIC QUALITY - Please contact us if you have any questions or concerns about the product via Amazon message. We will reply you within 24 hours. STORAGE AND APPLICATION—Keep cells in a 40% to 60% charged state during long-term storage. We recommend charging the battery every 3 months after receiving the battery and maintaining the voltage of 3.7-4.0V. Store the battery in a cool and dry place//Suitable for Bluetooth speaker, dash cam, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, surveillance units.