Features:
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 INFOVoltage:3.7V; Typical capacity: 250mAh, Min capacity: 230mAh; Weight: approximate 5g; Size: 20.5 x 32 x 5.3mm (WxLxH)RELIABLE PERFORMANCENo leaking, excellent cost performance and long cycle life. PCM protection function: over charge, over discharge, over current, short circuit protection, over temperature protection.CERTIFICATIONSUN 38.3 compliant. More than 400 batteries are UL certified. Search 'MH20555' on UL for all 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/APPLICATIONKeep 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.