<b> Battery for W-8 Sierra Wireless Netgear AC779S assure your device next 500 cycle times usage</b><br> <b>Product Specifications: <b/><br> * Battery Capacity: 2500mAh<br> * Battery Type: Li-Polymer<br> * Voltage Output: 3.85V<br><br> <b>Please ensure both model and battery Compatible Part Numbers are matched with your device before purchasing. </b><br> <b>FEATURES: </b> <br> 1、Built-in battery for W-8. <br> 2、2500mAh capacity to meet your needs. <br> 3、Voltage: 3.85V, current: 9.5Wh. <br> 4、Can be used as your spare battery, the original battery is dead, the spare battery can play a big role. <br> 5、100% Service Guarantee: If you have any dissatisfaction or doubt about our products, please contact customer service as soon as possible, we will give you the best service to guarantee your 100% satisfaction. <br><br> <b>Packing list: </b> 1* W-8 Sierra Wireless Netgear AC779S Battery. <br><br> <b>Attention: </b><br> Lithium-Ion Technology for Enhanced Battery Life. Never leave Hotspot plugged in to charge for longer than 24 hours. Allow battery to drain and re-charge. Leaving Hotspot plugged into charger without allowing battery to drain, may affect performance of battery and/or ruin battery/device. Hotspot should never be left to charge in direct sun, or extreme temperatures (0F/-18C - 113F/45C) <br><br> <b>Actual usage time will vary based on user settings, feature use and network. </b><br>