EEMB Lithium Polymer Battery 3.7V 2000mAh 103454RP Lipo Rechargeable Pack with wire JST connector for Bluetooth Speaker and Dashcam confirm device & polarity before purchase

Before purchasing, make sure the polarity of the device matches the connection of the battery pack. Battery size; 2. Connector model; 3. Plug size; 4. Connector polarity and this is not universal. (It causes a deficiency if the polarity of the battery port does not match your device.) Basic information: voltage: 3.7 V; typical capacity: 2000 mAh; minimum capacity: 1900 mAh; weight: approx. 40 g; size: 34.5 x 56 x 10.6 mm (W x L x H) Reliable performance: no leakage, excellent cost performance and long service 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. // QUALITY SERVICE - Please contact us if you have any questions or concerns with the product via Amazon message. We will reply to you within 24 hours. Storage and use: keep the cells charged in 40%-60% during storage for a longer period of time. We recommend charging the battery every three months after receiving the battery and maintaining the voltage 3.7-4.0V. Store battery in a cool and dry place. Suitable for Bluetooth speakers, dashcam, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, GPS, surveillance units, e-books, sleep management devices, blood oxygen tracking devices.