Specially designed for Hiboy S2 and KS4 models. The battery size (12.3 x 2.59 x 1.57 inches) is exactly the same as the original battery. Selected A-class battery cells with high energy density and low self discharge rate. After rigorous aging and cycling tests, it can provide over 500 complete charge and discharge cycles to ensure long-term stability and reliability. With a large capacity of 270Wh and high power of 7500mAh, it provides longer range and stronger power output than ordinary batteries, giving your scooter a new lease on life. Adopting high-quality lithium-ion batteries and integrating advanced battery management systems (BMS), it provides multiple safety protections including overcharge protection, overdischarge protection, short circuit protection, overcurrent protection, temperature protection, and balanced charging. Eliminate safety hazards from the source and ensure the safety of you and the equipment you use. The battery is equipped with standard XT60 female and SM male connectors, which can be plug and play with your scooter harness. The screw holes reserved at the top and bottom allow you to quickly fix them with simple tools without any modification, and can be replaced within five minutes