Maintaining a long battery life is perhaps the most important thing that comes to mind when purchasing a new device. Yet, the question is: how? Whether you’re using rechargeable lithium-ion batteries or single-use alkaline ones, knowing how to make batteries last longer can save you a lot of resources.

In this guide, we’ll go through the key factors that affect battery life, proven tips to extend battery life, and essential battery storage tips to keep your devices running smoothly.

What Affects Battery Life?

Before diving into tips to improve battery life, we need to know the factors that actually affect it. 

1. Temperature Extremes

High temperatures encourage chemical processes within a battery that result in its weakening. Very low temperatures, however, decrease the efficiency of a battery and reduce its capacity for a certain period. 

2. Charge Cycles

Each battery has a limited number of charge cycles, complete charges and discharges, before its capacity starts to degrade. The more often you cycle through a full charge, the shorter the battery’s lifespan becomes.

3. Overcharging or Deep Discharging

Charging a battery to 100% and letting it drain to 0% regularly can damage its internal chemistry, especially for lithium-ion batteries.

4. Poor Storage Conditions

Poor storage, such as in hot environments, can significantly reduce a battery’s shelf life, even when it’s not in use.

How to Make Batteries Last Longer: Usage Tips

When it comes to everyday use, implementing a few smart habits can improve your battery life. Here are some tips that you can do:

1. Avoid 100% and 0% Whenever Possible

Try to keep your rechargeable devices between 20% and 80% charged. This minimizes stress on the battery and helps preserve its capacity.

2. Use Battery Saver Modes

Most smartphones and laptops now come with built-in battery-saving modes. Use them to limit background processes, lower brightness, and extend usage time.

3. Reduce Background Activity

Close unnecessary apps, disable Bluetooth and location services when not needed, and reduce push notifications. These small steps help conserve energy and reduce battery wear.

4. Use Original Chargers

Third-party or low-quality chargers may deliver inconsistent voltage or current, potentially damaging the battery. Use only manufacturer-recommended charging equipment.

5. Avoid Use While Charging

Using your device for gaming or video streaming while it's plugged in causes heat buildup and may reduce battery efficiency over time.

Battery Storage Tips: Best Practices

Here are some battery storage tips that can help maintain battery health:

1. Store in a Cool, Dry Place

The ideal storage temperature is around 15°C (59°F). Avoid leaving batteries in hot cars or damp environments.

2. Keep Batteries at Partial Charge

When storing rechargeable batteries, charge them to around 40–60% before putting them away. Storing at full or empty charge can damage battery chemistry over time.

3. Use Airtight Containers for Long-Term Storage

For non-rechargeable batteries (like AA or AAA), store them in their original packaging or an airtight container to prevent moisture and corrosion.

4. Avoid Mixing Battery Types

Do not mix new and old batteries, or mix chemistries (e.g., lithium and alkaline). This will result in leakage or discharge issues.

Specialized Tips for Different Battery Types

Lithium-Ion Batteries (smartphones, laptops, EVs)

• Perform shallow charges (20–80%)
• Avoid overheating
• Use devices regularly to keep current flowing

Nickel-Metal Hydride (NiMH) Batteries (rechargeable AAs)

• Charge fully before use
• Store in a cool place
• Avoid deep discharges

Alkaline Batteries (single-use)

• Keep in packaging until needed
• Store away from metal objects to prevent short-circuiting

FAQs

Q1: What shortens battery life the most?

Overcharging, deep discharging, exposure to high heat, and frequent full charge cycles are the top contributors to reduced battery life.

Q2: Is it bad to leave devices plugged in overnight?

While modern devices are smart enough to stop charging at 100%, the battery can still degrade over time due to heat buildup and maintaining a full charge for extended periods.

Q3: How long can batteries be stored before use?

Most batteries have a shelf life of 2–10 years, depending on type and storage conditions..

Q4: Does using a phone while charging damage the battery?

Using a device during charging can generate heat, which may contribute to battery wear if done frequently or under high-performance loads.

Q5: Should I fully drain my battery before charging?

No. Modern lithium-ion batteries perform best when charged frequently in smaller amounts. Avoid letting them drain to 0%.