1) Read the electrical instructions carefully and use the recommended battery;
2) Check whether the contact parts of the electric appliances and batteries are clean, wipe them with clean cloth if necessary, and install them in the positive and negative directions after cleaning;
3) When there is no adult monitoring, children should not be allowed to replace batteries. Small batteries such as AAA should be placed in places that children cannot access;
4) Do not mix old and new batteries or different models of batteries;
5) Do not attempt to heat, charge or other methods to regenerate a disposable battery;
6) do not short circuit the battery;
7) Do not drop the battery into water; 8) do not remove the battery;
9) Disconnect the switch after using the electric appliance;
10) The battery shall be removed from the long-term unused electrical appliances;
11) the battery shall be kept in a cool, dry place without direct sunlight.
23a and 27a are special high energy, not ordinary AA OR AAA dry battery, the size is different, please confirm the model to avoid wrong purchase!