Batteries in the Freezer: The Myth and the Reality

So, are batteries really better off in the freezer? In short, not really. If this is the first time you’re hearing this, try not to beat yourself up too much; once upon a time, this myth did have some merit. Most of the battery types that people stored in the freezer are household AA, AAA, C, or D batteries. Don’t try putting your boat, RV, or car battery in the freezer.

Yes, we have tested batteries in the freezer so you don’t have to!

When rechargeable batteries first came on the scene, they had a pretty horrible reputation. With a nickel cadmium chemistry, they could lose up to 20%-30% of their capacity each month. This was a problem that forced consumers to get creative. Thus, people started storing batteries in the freezer or refrigeration in an attempt to slow down this process of losing capacity and preserve as much juice as possible. By putting these batteries in the freezer they could hold their charge twice as long.

Luckily, rechargeable household batteries have come a long way since then. Now, the top brands can maintain up to 85% of their charge for an entire year. So really, there isn’t much of a need to store your batteries in the freezer anymore, and most battery manufacturers will tell you not to. 

Likewise, non-rechargeable alkaline batteries have very low discharge rates of about 2% per year at room temperature. Putting these batteries in the freezer will have more negative potential effects than positive.

How to Protect and Keep Your Batteries Functioning in Cold Temperatures

If you anticipate needing to use your batteries in cold temperatures, that is another situation. One thing is for certain: lithium batteries work WAY better in cold temperatures than lead-acid.

However, even lithium batteries perform best when above freezing temperatures. In fact, our internal BMS has a charging cut-off that prevents the battery from charging and damaging itself at these low temperatures.

By keeping your batteries warm in colder temperatures you can avoid charging difficulties. This can be accomplished by using an external heating pad or by keeping your lithium batteries in an insulated or heated compartment. (Reminder: lead-acid batteries cannot be installed in a non-vented compartment, but our lithium batteries can!)

However, to make the process even easier, we’ve installed heat-enablers in our lithium batteries. The technology incorporates an internal heating system, allowing for charging and discharging in colder climates and expanding the temperature restrictions for the Battery Management System (BMS). The heating element is easy to use and can be enabled and disabled with a switch to prevent accidental usage. They are also very easily prepared for long-term storage.

Learn more about our Heated Batteries in the video below!


7. How to seal freezer bags

Resealable freezer bags are great. Second best are freezer clips. Don’t have either?

No problem!

When we run out, we use binder clips. These are strong enough to keep even the fullest of packaged goods sealed.

TOP TIP: Bought a bag of frozen chicken breasts, battered cod or burgers? The packaging takes up so much unnecessary room in your freezer. Before freezing, take the items out from the packet and rebag them up in the portions required. You’ll save so much space.

9. Clean your jeans in the freezer

Who'd have thought it?!
Who’d have thought it?!

Wow, this is certainly a new one for us!

Recently we blogged about how often you should wash clothes, and it came to light that many of us wash our jeans far too much.

If you want to make sure your jeans are clean, but don’t want to ruin their texture or colour, your freezer could be the answer.

Place your folded jeans inside a clean plastic bag, and pop on a clean shelf in your freezer. The sub-zero temperature will kill germs and make them much fresher.


Have leftover wine? Pour it into ice cube trays to make individual cubes. You can use them later as a creative way to chill a glass of red or white from a fresh bottle or in soups, stews, coq au vin, or any other recipes that call for a splash of vino.


Want fresh herbs all year-round without paying a premium price? Buy them at a farmer’s market when they’re in season, then freeze. Serious Eats tested several methods and determined that covering chopped herbs in canola or olive oil prior to freezing is the best way to retain flavor and texture.

Does Putting Dead Phone Batteries In The Freezer Revive The Batteries?

Dead batteries should not be placed in the trash right away. There are ways to revive a dead battery. You can still restore the cells in two different ways or method. Find which one will suit you best.

Method 1: Freezing the batteries

1. Remove the battery from the phone. 2. Place the battery in a sealed plastic before placing it inside a plastic container. Avoid using paper bags or foils because water can easily sip in. 3. Place the sealed battery inside your freezer. Leave it on your freezer overnight or at least 12 straight hours. 4. Remove the battery from the freezer. Let it warm down to room temperature. Avoid using the battery while it is frozen. 5. Remove moisture from the battery. 6. Return the array in your gadget but don’t turn it on yet. Charge your phone using its charger. Allow the battery at least 48 hours of charging time. 7. After loading your phone for at least 48 hours, you have to check the battery power level. You will notice that it can hold its charge again.

Method 2: Jumpstarting the batteries

1. Ready everything you will need in jumpstarting your cells. For this, you will need a : ● 9V battery ● Electrical tape ● Electrical wire (You may choose the red and black wire). 2. Connect the positive and negative terminal of your phone battery to the electrical wires. You can quickly determine these through the + and – signs. Phone terminals usually have more than one battery terminals. Better use the ones that are far from each other. Never used the central terminals. 3. Use electrical tape to cover the connections. Be careful with the contacts so as not to interchange it. 4. Connect the wire of the positive terminal to the positive terminal of your phone. Do the same thing with the negative end. 5. Secure the connections by using electrical tape. Store it at cold temperature and away from water and heat. 6. Let it sit for about a minute or until the battery gets a little warmer. Make sure to monitor the charging time and be on the lookout every time. 7. Disconnect when you feel that the battery is already warm to touch. 8. Place back the battery in your phone and check if it powers on. 9. See the battery level when you put it on. When the charge is not yet done, put it back and wait until the battery becomes fully charged.

Characteristics Of Rechargeable Batteries

Though rechargeable batteries are somewhat different from one another, they have these similar characteristics. I am carefully observing the characteristics will perhaps tell us how to maintain them accurately.

1. Cycle life of these batteries depends on the amount of maintenance received. Failure to apply full periodic discharge on this battery may affect its cycle life at least three times. 2. Depth of release can also change the cycle life. Shallow discharges can save battery life than deep discharges. 3. Internal protection circuits can consume at least 3% of the battery’s stored energy. 4. Rechargeable cells are capable of high current pulses. 5. Maintenance of these batteries can be done through topping or equalizing charge. 6. The cost of the battery is divided by the battery cycle, and it does not include the electricity cost and chargers. 7. The temperature range for these battery types are more confined, and it applies only to discharge. 8. Battery discharge is highest after charging; then it begins to taper off.

Of all the rechargeable batteries that I have mentioned, only NiCd has the shortest charging time, but it delivers the highest current voltage. However, NiCd demands a very high maintenance value.

It is indeed tough to determine the correct charging procedure and care for these rechargeable batteries for our gadgets and devices. It is commonly used by almost everyone who owns a gadget and mobile phone.

Asking questions that concerns the charging capabilities of our batteries is but ordinary. Can you recharge batteries in the freezer? It is a simple question that raises a lot of inquiry about the rechargeable batteries we are using.


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