tery for Razer Replacement Battery Type Voltage: 15.4V; Capacity: 65Wh/4221mAh/4-Cell Compatible P/N RC30-0328 RZ09-0328 4ICP5/46/108 Compatible Models For Fit for Razer Blade 15 Base 2020 2021 RZ09-0328 RZ09-0328X RZ09-03286 RZ09-03287 RZ09-03289 RZ09-03287E22 RZ09-03287E22-R3B1 RZ09-03287E22-R3U1 RZ09-03287E22-R341 RZ09-03304x RZ09-03305x RZ09-0330x RZ09-03519E11 RZ09-03519E11-R3U1 RZ09-0369 RZ09-0369X RZ09-0410 RZ09-0410X RZ09-0410BE22-R3U1 RZ09-0410BEA2-R3U1 Series. DG Quality Grade A cells mitigate the risk of battery leakage and maximize output stability. Built-in circuit protection, enhances safety of usage and extends battery life DG TIPS For the initial installation, please reinstall and check the interface fully connected, discharge the battery to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times.