Pulsar Pl79188 APS5T Battery Pack 3.7V Li-Ion 4900 mAh Fits Talion Charges W/ USB APS 5T Rechargeable Lithium-Ion Power supplies Are Designed For Use With Thermal imaging riflescopes Pulsar Talion.APS 5T Batteries Support USB Power Delivery Fast Charging Technology When using a Standard Charging Set (Charger, USB Type-C Cable, Power Adapter). Nominal Voltage: 3.7V Rated Capacity mAh: 4900 Includes: Battery/Operating Manual/Warranty Card Chemical Composition: Li-Ion Rechargeable: Yes