Portable Power Supply for Laptop Portable Power Supply for Laptop Users ManualThis product can supply the power in emergency with high quality. It can ... indicator light of laptop is red, please charge the power supply firstly with the affiliated adaptor. Connect your connector adaptor ... , 18V, 19V, 20V, 22V, 24V3000MHA Dimension:150(L)*86(W)*21(H)mm4. Three DONTS Dont charge the power supply with ...