Content of the material
1. Why you should freeze batteries
Batteries don’t come cheap, and it’s both frustrating and costly when they run out.
Keep your toys, remotes and other battery-powered items going for longer by storing your batteries…in the freezer.
Most people don’t know, but batteries begin to discharge (even when not in use) at room temperature. Storing batteries in the freezer can reduce their loss of power by up to 90%, so it’s definitely worth doing.
How Does Temperature Affect Battery Life?
Colder temperatures can indeed slow down the chemical reaction in batteries. However, most household batteries are built to function in room temperature settings (somewhere between 60 and 78 degrees). It’s important to keep this in mind because cold temperatures can affect how a battery charges and sometimes even make them drain faster.
On the other hand, hot temperatures can cause your batteries to lose their charge quicker. A general rule of thumb is that the hotter it is, the faster your battery will drain–sometimes up to 4% faster. Because of this, always follow the battery manufacturer’s storage and charging recommendations.
Here at Battle Born Batteries, we have tested our lithium-ion batteries extensively in the cold and even wrote a whitepaper all about cold weather operations. Learn more about it here: Lead is Dead White Paper: Cold Charging Study
How Much Does Storing Batteries In Freezer Extend The Battery Life?
Storing batteries in the freezer or just near a freezing point can significantly improve and extend its lifespan. But this notion or idea is suitable only for some batteries and does not apply to all kinds of cells.
=> Alkaline batteries for one can help store its remaining charge when place in freezing point.
An alkaline battery which is placed in room temperature will eventually lose its charge through the self-discharge process. Self-discharge happens when the battery is in a warm place. It slowly loses its charge even when you are not using it.
=> NiMH and NiCd are the kind of batteries that discharge much faster compared to alkaline batteries. Fact says that when you stored these two batteries at room temperature, it will self-discharge at a few percents every day.
Once you stored it at lower temperatures, the self-discharge rate also lowers. When you freeze these type of batteries, you will be able to retain at least 90% of its charge. So, it makes sense to be storing these batteries in the freezer.
However, even when you don’t use the freezer, storing it in a cool, dry place will also help extend the battery life.
How to Store Battle Born Batteries for Winter
Yes, some lithium-based batteries can benefit from cold storage when done right. However, that doesn’t mean you should store your Battle Born Batteries in the freezer. On the contrary, we recommend fully charging your batteries to 14.4V. Then, completely disconnect them from any kind of power source.
You can do this by manually disconnecting the negative cable, or you can disengage the disconnect switch that leads to your electrical system. It’s important to ensure that your batteries are truly disconnected. Some C02 sensors and stereo backlights can bypass the disconnect switch.
When left fully charged and in the right storage conditions, you should be able to come back to a fully functional battery after even a year of storage, as it should only drain 2%-3% each month. Just make sure to keep the storage environment as dry as possible.
Consider investing in a battery guardian if you’re storing an entire system.
For more information on storing your Battle Born Batteries, check out How to Winterize and Store Your Batteries.
What Kind Of Battery Can We Recharge In The Freezer?
There are only three types of batteries that we can store in the freezer. Not all cells are capable of being recharged in the freezer. Other examples would be damaged or harmed when frozen.
● NiMH ● NiCD ● Alkaline batteries
More Details Of Each Battery
These are the list of rechargeable batteries and their characteristics when charging. Not all batteries can be recharged. There are what we call disposable batteries. Disposable batteries when discharged go straight to the trash.
● NiMH or Nickel-Metal Hydride. Compared to NiCd, it has a higher density of energy. It has no metal content which is considered toxic. ● NiCd or Nickel Cadmium. This battery type is low on energy density. It is cheaper and is used for an extended period. NiCd is typically used in video cameras, medical equipment, and two-way radios. ● Lead Acid. It is the most commonly used battery for medical equipment like wheelchairs, UPS system, and emergency lighting. It is considered to be the most economical. ● Lithium-ion. We used this battery for lightweight and high energy density. This battery is susceptible and fragile and requires a protection circuit to secure safety. It is widely used for laptops, netbook, and mobile phones. ● Lithium-Ion Polymer. It is almost similar to a Li-ion battery only that it has a slimmer in geometry. The packaging of this battery is also a lot simpler. Most commonly used for mobile phones.
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