Device for injecting acid into storage battery

The utility model discloses a device for injecting acid into a storage battery. The device comprises a rack (1), wherein at least one cylinder (2) is arranged on the upper part of the rack (1); a piston rod (3) is arranged in each cylinder (2); each piston rod (3) is connected with three push rods (4) simultaneously; the other end of each push rod (4) is provided with a piston head (6); each piston head (6) stretches into a corresponding quantitive cup (5); a liquid inlet (12) is formed on the side wall of the quantitive cup (5), which is close to the top; a liquid outlet (8) is formed on the top of the quantitive cup (5); a workbench (9) is arranged on lower part of the liquid outlet (8); a liquid storage tank (10) is arranged at the bottom of the workbench (9); and the liquid inlet (12) is communicated with the liquid storage tank (10) through a liquid sending pipe (11). By adoption of the structure, acid adding amount in a unit cell is a set value, so that the device is convenient to use, and acid can be a