Novel battery charger

The utility model relates to a novel battery charger. The novel battery charger comprises a shell in which a circuit board is arranged, and a charging groove is arranged on the upper surface of the shell. U-shaped grooves are arranged at the outer side of the shell, and through holes are arranged at the corners at the two sides of the grooves. A temperature sensor is arranged inside the shell, and a solar cell panel is arranged on the upper surface of the shell and is connected with the circuit board. By arranging the grooves and arranging the through holes at the corners, the heat radiation is convenient, and the internal temperature can be reduced. By arranging the temperature sensor, and when the temperature exceeds a set temperature, a power supply is cut off, thereby reducing the probability of spontaneous combustion. By arranging the solar cell panel and on the condition of not having the power supply, the solar energy can be used to generate power. The novel battery charger of the utility model is reasonable in design, and can be large-scale popularized.