EEMB Lithium Polymer battery 3.7V 820mAh 653042 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase(10)

Make Sure Device Polarity Matches with Battery Pack Connector Before Purchase!!!-1.Battery Size; 2.Connector Model; 3.Connector Size; 4.Connector Polarity - THIS IS NOT UNIVERSAL!!! (It will cause a shortage if the polarity of the battery connector does not match your device.) BASIC INFO-Voltage:3.7V; Typical capacity: 820mAh, Min capacity: 770mAh; Weight: approximate 16.4g; Size: 30.5 x 44 x 6.8mm/1.2"x1.69"x0.26" (WxLxH) RELIABLE PERFORMANCE-No leaking, excellent cost performance and long cycle life. PCM protection function: over charge, over discharge, over current, short circuit protection CERTIFICATIONS-UN 38.3 compliant. More than 400 EEMB batteries are UL certified. Search "MH20555" on UL for all EEMB UL certification information.//MANUFACTURER DIRECT- Please contact us if you have any questions or concerns with the product via Amazon message. We will respond to you within 24 hours. STORAGE/APPLICATION-Keep the cells in 40%-60% charged state during long period storage.We recommend to charge the battery every 3 months after receipt of the battery and maintain the voltage 3.7-4.0V. Store battery in cool and dry place./SUITABLE for Bluetooth speaker, dash cam, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, GPS,monitoring units, e-books, tracking devices, sleep management equipment, blood oxygen tracking equipment, pulse monitors,wireless, IoT.