How to Get Corroded Batteries Out of a Flashlight [Step-by-Step Guide 2022]

If you’ve ever had a flashlight that wouldn’t turn on because of corroded batteries, you know how frustrating it can be. In this post, we’ll show you how to get corroded batteries out of flashlight? So make sure to read the entire article to get the idea.

If you are like me, you have a few flashlights scattered around the house. You never know when you need to find your way in the dark or if there’s an emergency. The problem is that over time, batteries corrode inside the flashlight and can’t be removed without breaking it open. I don’t want to break my favorite light so I’m looking for other options! 

Do you think there might be some tricks to removing old batteries? Let’s see what we can do about this frustrating situation!

Removing the Corroded Battery From the Flashlight

The first step is to remove the battery from the flashlight. If you are lucky, it will just pull out. However, more often than not, corrosion has built up around the battery and it is stuck in place. In this case, we will need to use a tool to help get it out.

Some people have had success using a pair of tweezers and gently prying the battery out. Others have used a small screwdriver, but this can cause damage to the flashlight. You might be able to wedge something into those tiny crevices that will lift the battery up and allow you to pull it out with your fingers.

If all else fails, use some tape as a kind of a strap to grab the battery and pull it out. It may take a little effort, but you should be able to get the battery out without much trouble at all.

Once you have removed the old batteries from your flashlight, you will need to clean off any corrosion left behind as well as scrub away sticky residue so new batteries will fit in easily. A cotton swab or toothbrush can come in handy here! You could also use baking soda with a bit of water to gently scrub away those stubborn spots.

When the inside is nice and clean, insert some fresh batteries and see if your flashlight works! If it doesn’t light up immediately, turn it on for a few minutes each day until the corroded batteries are completely gone.

I hope this post has helped you get your flashlight working again! Now you know how to remove corroded batteries so your light will shine bright once more. Thanks for reading!

Cleaning the Battery Terminals

Once you’ve removed the batteries, clean the battery terminals with a wire brush. Use this opportunity to inspect the compartment for corrosion or rust. If there is any corrosion or rust visible, use your wire brush to remove it. This will ensure that no debris gets into the flashlight’s electrical system which might cause further damage if corroded (contrary to my expectations).

After cleaning off both ends of all batteries thoroughly with water and maybe some baking soda for especially tough cases, don’t put them back in immediately! That would be terrible. Let them dry completely first.

Reinstalling the Batteries

When you’re sure they are 100% dry, put one end of each battery in their respective slots and press down firmly until it clicks. If done correctly, the light on your flashlight should come on and you’ll be ready to take on whatever darkness awaits you.

Also Read: How to Signal SOS with a flashlight?


Q: I tried using a screwdriver to get the battery out and scratched up my flashlight. Is there anything I can do to fix it?

A: If the screwdriver slipped and caused damage to your flashlight, try using superglue or epoxy to fix the scratches. Once it’s dry, your flashlight should look good as new.

Q: My batteries are corroded in the compartment beyond repair. How much does a new one cost?

A: It really depends on what kind of flashlight you have and how long it has been since you bought it. If you bought yours just recently or have looked around online to see what they normally cost, then your guess is as good as mine! I’m sure all will be revealed in time. Good luck out there!

Q: How much would damage caused by screwdriver cost to fix?

A: It really depends on the type of screwdriver used. If you used flat head screwdrivers, then the scratches would probably not be very noticeable at all. If you used a Phillips head screwdriver and it slipped, the damage could be more severe. In this case, using epoxy or superglue would probably do the trick which will cost about $10 or so.


It’s never fun when something goes wrong with our gadgets, especially when it seems like there’s no easy way to fix it. But don’t worry, flashlight lovers! We’ve got you covered. In this post, we showed you how to remove corroded batteries from your flashlight and how to clean the battery terminals. Once everything is nice and clean, just put some fresh batteries in and voila! You’re good to go. Hope this info helps! Good luck flashlight owners!

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