4 Ways To Put Batteries In Correctly - WikiHow

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1 Examine the device for a small battery symbol or a plus and minus sign. Most battery compartments are on the back or bottom of the device, so check there first. Depending on the device, the compartment might be on the front, sides, or top of the device. The compartment is typically marked with either a small battery-shaped symbol or a “+” or “-” sign, indicating the polarity of the battery.[15] X Expert Source Marvin WooLicensed Electrician Expert Interview
- These markings may be on the top or just to the side of the compartment door.
2 Look for a compartment that slides off if there is no symbol. If you don’t see any markings, look for signs of the compartment on your device. On most devices, there is a piece that slides or snaps off to open the compartment. Just look for lines on the device that don’t match the other seams.
- Some devices have a clasp or a lever that releases to open the compartment door.
- The battery compartment may also be held shut by one or more small screws.
3 Check the user manual if you’re not sure where the compartment is. The instruction manual for your device should have a diagram showing where the batteries go. If you can’t find your manual, search for your device online. Usually, the manufacturer will provide a copy of the manual on their website.
- When searching for the manual online, include the brand name and model number, if you know it.
4 Remove any screws holding the compartment shut. The screws in a battery compartment are typically Phillips screws, meaning they have a cross-shaped dip in the head. To remove these screws, use a Phillips-head screwdriver with a cross-shaped tip.
- If the screw is stuck, you may be able to remove it using a screw extractor.
- In you’re changing a watch battery, you may need to use a special tool, like a small flathead screwdriver, to remove the back of the watch.
5 Look at the compartment door to determine what size battery you need. Usually, the battery size will be printed on the outside of the compartment door. If it isn’t on your device, the information may be located inside the compartment. If it’s not listed, check the device’s manual. Or, estimate the size of the battery and try different sizes until you find the one that fits.
- AAA, AA, C, and D batteries are all 1.5V batteries, but the different sizes produce different currents, or the amount of power that comes out of the battery at once. AAA is the smallest traditional 1.5V battery, and is usually used to power small electronics. D is the largest 1.5V battery and usually charges larger items like flashlights.
- A 9V battery looks like a small box with snaps on top, and it's often used to power devices like smoke detectors and walkie-talkies.[16]
- Coin and button batteries are small and round, and they're used to power very small devices like watches, hearing aids, and computer components.[17]