Constant current (CC) and constant voltage (CV) output are considered the main modes of battery charging for EVs wireless power transfer (WPT), which can provide efficient charging and sufficient protection. However, adaptive CC and CV modes cannot be achieved simultaneously under load changes and coil misalignment. This paper proposes an improved LCC-S based WPT system, which embeds switch-controlled capacitors (SCC) to satisfy CV/CC charging under zero phase angle (ZPA) condition. On the other hand, a phase shift (PS) control is put forward to control the PS angle θ1 of the inverter and the PS angle θ2 of the rectifier to adjust the value of CC and CV. The application of dual-side variable SCCs and the corresponding control method ensures constant output characteristics. Further, the relationship of voltage gain and transconductance gain, θ1, and θ2 under different mutual inductances caused by coil misalignment is presented. In this way, the value of CC and CV can be adaptively tuned. Finally, a verification device for 3 A charging current and 60 V charging voltage in two modes is established to verify the stability and accuracy of the proposed system and its control strategy.