Rivo's hands-free sterilizer battery fell out. How to install it?

The battery of Rivo hands-free sterilizer falls out, and the installation method is as follows:

1. Push back the battery compartment cover, and you can see the main power switch of the intelligent induction sterilizer and the knob of the battery box handle, which are marked with unlocking and locking.

2. Turn the handle of the battery box to the left to the position marked by the unlock sign, and then pull it out. Put in four No.7 batteries, then insert the handle of the battery box and turn it to the right to the position marked by the lock.

3. The black switch can be used to switch on and off the host, and it can also be used to set the liquid output of the host every time. The total liquid output can be adjusted in three grades, and every time the adjustment button is pressed, it will switch to one grade, and switch between 1, 2 and 3 grades (1.5mL/3mL/4.5mL) respectively.

4. The liquid bottle at the bottom of the intelligent induction sterilizer is transparent. Take out the liquid bottle, pour the disinfectant, add the disinfectant, and then tighten the bottom of the liquid bottle and install it.