About the use of an extended battery pack – Sony VPCSE23FX User Manual

VPCSE25FX, VPCSA4SGX, VPCSE2LFX, VPCSA4GFX, VPCSE2EFX, VPCSB490X, VPCSB4AFX, VPCSE2NFX, VPCSC41FM, VPCSA4MFY, VPCSE2SFX, VPCSA4FGX, VPCSA4EGX, VPCSA45GX, VPCSB4CFX, VPCSA4HGX, VPCSE2DGX, VPCSE290X, VPCSC4AFM, VPCSE2AGX, VPCSA4BGX, VPCSE2RFX, VPCSE2KGX, VPCSA4CFX, VPCSA41FX, VPCSA490X, VPCSA43FX, VPCSE2MFY, VPCSE2JFX, VPCSE27FX, VPCSE2HFX, VPCSB4DFX, VPCSA4JFX, VPCSA4DFX, VPCSA4AGX