Description: Wireless USB Modem (Aircard) Battery For Wireless Modems Chemistry: Lithium Ion Voltage: 3.7V Nominal Capacity: 380mAh Width: 32.5mm Height: 4mm Length/Breadth/Depth: 42mm Weight: 10g Battery compatible with Sierra Wireless USB Wireless Modem (Aircard) models 595U, 875U, 880U, 881U as used by Telsta NextG for wireless internet access. Replaces original Battery 1201324 This battery is a fully compatible alternatve to the original branded product