How to Charge Action Camera Battery 37V 1350mAh Safely and Efficiently

Always use a compatible, high-quality charger designed for 3.7V 1350mAh action camera batteries to prevent overheating, overcharging, and potential damage. Charge in a cool, dry environment and avoid leaving the battery connected beyond 100% to maximize lifespan and ensure safe, efficient performance every time.

Key Takeaways

• Use only manufacturer-approved chargers to prevent overcharging and battery damage.
• Charge in a cool, dry place to maintain battery health and efficiency.
• Avoid draining to 0%—recharge at 20% to prolong battery lifespan.
• Monitor charging time; typically 2-3 hours for a 1350mAh battery.
• Unplug after full charge to prevent overheating and energy waste.
• Store at 50% charge if not in use for extended periods.
• Check voltage compatibility—3.7V batteries need precise 4.2V charging limits.

How to Charge Action Camera Battery 3.7V 1350mAh Safely and Efficiently

Remember that moment when you’re hiking a mountain trail, camera rolling, capturing golden sunrise light, only to hear that dreaded low battery beep? It’s happened to me more than once—and each time, it felt like a punch to the gut. I’d just started a time-lapse, and my action camera battery 3.7V 1350mAh died halfway through. That’s when I realized: how you charge your battery matters just as much as the gear itself. It’s not just about plugging in and hoping for the best. Charging your 3.7V 1350mAh lithium-ion battery the right way can mean the difference between capturing a lifetime memory and missing it completely.

Whether you’re an adrenaline junkie filming your first skydiving jump, a vlogger documenting your cross-country road trip, or a parent recording your kid’s first bike ride without training wheels, your action camera’s battery is the silent hero. And like any hero, it needs proper care. This guide walks you through everything you need to know about charging your action camera battery 3.7V 1350mAh—safely, efficiently, and in a way that keeps it performing strong for years. No fluff, no hype—just real, practical advice based on real-world use.

Understanding Your 3.7V 1350mAh Battery: The Basics

What Do the Numbers Mean?

Let’s break it down: the “3.7V” stands for voltage, which is the electrical potential your battery delivers. Most action cameras—like GoPro, DJI Osmo Action, and Akaso models—run on 3.7V lithium-ion (Li-ion) or lithium-polymer (LiPo) batteries. The “1350mAh” is milliamp-hours, which measures capacity. Think of it like a water tank: 1350mAh means the tank holds enough charge to deliver 1350 milliamps for one hour, or 675 milliamps for two hours. In real terms, this usually translates to about 60–90 minutes of 4K video recording, depending on your camera model and settings.

For example, my GoPro Hero 11 with a 1350mAh battery lasts roughly 75 minutes at 4K/30fps. But if I switch to 1080p/60fps, I can stretch it to 110 minutes. That’s why knowing your usage helps you plan charging sessions—especially when you’re off-grid.

Why Lithium-Ion Batteries Are the Standard

Most action cameras use Li-ion or LiPo batteries because they’re lightweight, have high energy density, and don’t suffer from the “memory effect” (unlike older NiMH batteries). But they’re also sensitive to charging habits. Overcharging, extreme temperatures, and deep discharges can shorten their lifespan. A typical 3.7V 1350mAh battery is designed for about 300–500 full charge cycles before capacity drops to 80%. That’s why smart charging habits can save you money and frustration.

One time, I left a spare battery charging overnight with a cheap third-party charger. The next morning, it was warm to the touch and wouldn’t hold a full charge. That taught me: not all chargers are created equal. More on that later.

Signs Your Battery Needs Attention

• Battery drains faster than usual (e.g., 30 minutes instead of 75)
• Camera shuts down at 20% or 10% charge
• Battery swells or feels hot during use or charging
• Charging takes much longer than normal

If you notice any of these, it’s time to inspect your charging routine or consider replacing the battery. Swelling is a red flag—don’t ignore it.

Choosing the Right Charging Method and Equipment

Use the Manufacturer’s Charger (When Possible)

Your camera’s original charger is designed to work perfectly with your action camera battery 3.7V 1350mAh. It regulates voltage, monitors temperature, and stops charging when full. I’ve used third-party chargers in a pinch, but I always notice a difference. My GoPro’s original USB-C charger charges the battery from 0% to 100% in about 90 minutes, while a generic USB-A charger took over 3 hours and left the battery warm.

Stick with the OEM charger when you can. It’s not just about speed—it’s about safety. Manufacturer chargers include built-in protections like:

• Over-voltage protection
• Over-current protection
• Short-circuit protection
• Thermal cutoff

These features prevent damage to both the battery and your camera.

Third-Party Chargers: What to Look For

If you need a backup or your original charger is lost, not all third-party chargers are bad. But you must choose wisely. Look for chargers that:

• Are specifically designed for your camera model (e.g., “for GoPro Hero 10/11/12”)
• Have UL, CE, or FCC safety certifications
• Support USB-PD (Power Delivery) or QC 3.0 for faster, safer charging
• Include LED indicators to show charging status

I once bought a “universal” action camera charger on sale. It charged the battery, but the LED stayed red even after 6 hours. Turns out, it lacked a proper charge termination circuit—meaning it could’ve overcharged the battery. I returned it and bought a reputable brand instead.

USB vs. Wall vs. Portable Power Sources

You can charge your battery using:

• USB port on a computer: Slow but safe. Great for overnight charging. Avoid if your PC goes to sleep.
• Wall adapter (5V/2A): Faster and more reliable. Use a high-quality adapter (e.g., Anker, Belkin).
• Portable power bank: Perfect for outdoor adventures. Just make sure it outputs 5V and at least 1A (2A preferred).

During a weekend camping trip, I charged my spare battery using a 20,000mAh power bank. It took 2.5 hours, but I had full battery for a sunset time-lapse. Pro tip: use a power bank with a “pass-through” feature so you can charge the bank and the battery at the same time.

Step-by-Step Guide: How to Charge Your 3.7V 1350mAh Battery

Step 1: Power Down the Camera

Never charge a battery while it’s still in a powered-on camera. This can cause overheating and reduce battery life. Always turn off the camera, remove the battery, and charge it separately using a dedicated charger or the camera’s charging dock.

I learned this the hard way. I once left my Akaso EK7000 running while plugged into a USB port. The battery got so hot it triggered the thermal cutoff, and the camera froze. After that, I always power down first.

Step 2: Use the Correct Charging Port

Most modern action cameras use USB-C. Older models may have micro-USB. Make sure you’re using the right cable. A loose connection can lead to slow charging or no charging at all. I keep a short, braided USB-C cable in my camera bag—it’s durable and tangle-free.

Step 3: Monitor the Charging Process

Here’s what a healthy charging cycle looks like:

1. Red LED (or blinking): Charging in progress
2. Solid green or blue: Fully charged
3. No light: Check connection or battery

Most chargers take 90–120 minutes to charge a 1350mAh battery from 0% to 100%. If it takes much longer, check for:

• Low-power USB port (e.g., old laptop)
• Damaged cable
• Dirty charging contacts on battery or charger

Use a soft, dry cloth to clean the contacts every few weeks. Dirt can cause poor conductivity and slow charging.

Step 4: Don’t Overcharge

Once the battery reaches 100%, disconnect it. While modern chargers have auto-cutoff, leaving it plugged in for days can stress the battery. I charge my batteries during the day and unplug them right after. If I’m traveling, I use a smart plug to schedule charging (e.g., charge for 2 hours, then turn off).

Step 5: Store Properly After Charging

Don’t leave a fully charged battery in the charger for days. Store it at around 50–60% charge if you won’t use it for weeks. This helps preserve capacity. I keep my spare batteries in a small case with silica gel packs to reduce moisture.

Charging Best Practices for Longevity and Safety

Avoid Extreme Temperatures

Heat is the enemy of lithium-ion batteries. Never charge your action camera battery 3.7V 1350mAh in direct sunlight, near a campfire, or in a hot car. Ideal charging temperature is 10°C to 30°C (50°F to 86°F).

During a beach trip, I left my camera bag in the sun while charging a spare battery. The bag got so hot the plastic melted slightly. The battery was fine, but I learned to always charge in the shade or indoors.

Also, avoid charging in freezing conditions. Cold slows chemical reactions in the battery, leading to incomplete charging and potential damage.

Don’t Let the Battery Die Completely

Unlike old batteries, Li-ion doesn’t like being drained to 0%. Deep discharges can cause permanent capacity loss. Try to recharge when the battery hits 20–30%. I use the camera’s battery indicator religiously. When it hits 25%, I swap in a spare or start charging.

Use Battery Cases and Protection

Always store and transport your batteries in a protective case. Loose batteries can short-circuit if metal objects touch the contacts. I use a small neoprene case with individual slots for each battery. It also protects against bumps and dust.

Rotate Your Batteries

If you have multiple batteries, rotate them regularly. This ensures even wear and prevents one battery from being overused. I label my batteries with the date of purchase and use a “first in, first out” system.

Check for Firmware Updates

Some camera manufacturers release firmware updates that improve battery management. For example, GoPro’s Hero 11 update optimized charging algorithms to reduce heat. Check your camera’s app or website for updates every few months.

Common Charging Mistakes and How to Avoid Them

Using Cheap, Unbranded Chargers

They’re tempting because they’re cheap. But they often lack safety features and can damage your battery or camera. I once used a $5 charger from a gas station. It charged the battery, but the voltage fluctuated, and the camera displayed a “battery error” warning. I switched back to OEM and never looked back.

Charging in a Crowded Bag

Packing your charging setup in a cramped backpack with other gear can trap heat. Always leave space around the charger and battery. Use a separate compartment or a small charging pouch.

Ignoring the Charging Environment

Charging on a bed, couch, or fabric surface can block ventilation. Always charge on a hard, non-flammable surface like a table or desk. Never charge under pillows or blankets.

Leaving Batteries in the Camera for Long Periods

If you’re not using your camera for weeks, remove the battery. Leaving it in can lead to slow discharge and potential leakage. I store my camera with the battery removed and in a cool, dry place.

Using Damaged Cables or Connectors

Frayed cables, bent pins, or loose connectors can cause intermittent charging and overheating. Inspect your cables monthly. Replace any that show signs of wear.

Charging Accessories and Tools: What Works Best?

Recommended Charging Gear (Based on Real Use)

Accessory	Why It’s Useful	Example
OEM Charger	Safe, fast, reliable	GoPro USB-C Charger
Dual-Battery Charger	Charge two batteries at once	Wasabi Power Dual Charger for GoPro
Portable Power Bank (20,000mAh)	Charge on the go	Anker PowerCore 20000
USB-C to USB-C Cable (60W)	Fast, durable charging	Anker PowerLine III
Battery Case	Protects contacts and prevents shorts	Small neoprene case with slots
Smart Plug	Schedule charging to avoid overcharging	TP-Link Kasa Smart Plug

DIY Charging Station Idea

Create a charging station at home or in your vehicle. I use a small wooden tray with:

• A dual-battery charger
• Two spare batteries in a case
• A 20,000mAh power bank
• USB-C and micro-USB cables
• A notepad to track charge cycles

It keeps everything organized and ready for the next adventure.

Final Thoughts: Charge Smart, Shoot More

Charging your action camera battery 3.7V 1350mAh isn’t just a routine task—it’s a critical part of being a responsible content creator. A well-charged battery means fewer missed shots, less downtime, and longer gear lifespan. You don’t need fancy gear or complex science. Just follow a few simple rules: use the right charger, monitor the process, avoid heat and deep discharges, and store properly.

I’ve had my main GoPro for four years. The original 1350mAh battery still holds about 85% of its capacity—thanks to consistent, careful charging. Meanwhile, a friend who charged his battery overnight with a cheap adapter had to replace it after 18 months. The difference? Charging habits.

So the next time you plug in your battery, think beyond “just getting it charged.” Think about preserving that little powerhouse so it can keep capturing your life’s most exciting moments. Whether you’re chasing waves, hiking peaks, or just filming family fun, a well-cared-for battery is your silent partner in adventure.

Charge smart. Shoot more. Stay safe.

Frequently Asked Questions

How do I charge an action camera battery 3.7V 1350mAh properly?

Use the manufacturer-provided USB cable and charger, or a compatible 5V/1A power source. Connect the battery to the charger until the indicator light turns green, signaling a full charge.

Can I overcharge my 3.7V 1350mAh action camera battery?

Modern chargers have overcharge protection, so leaving the battery connected after full charge is generally safe. However, unplugging it once charged helps prolong long-term battery health.

Is it safe to use a third-party charger for my action camera battery 3.7V 1350mAh?

Yes, but ensure the charger matches the 5V/1A output and has safety certifications (e.g., CE, UL). Low-quality chargers may damage the battery or reduce its lifespan.

How long does it take to fully charge a 3.7V 1350mAh action camera battery?

With a standard 5V/1A charger, it typically takes 2–3 hours. Charging time may vary slightly depending on the charger’s output and battery condition.

Why isn’t my action camera battery holding a charge like before?

Battery degradation over time is normal, especially after hundreds of charge cycles. If the issue persists, replace the battery with a new 3.7V 1350mAh unit.

Can I charge my action camera battery while recording?

Most action cameras support charging during use, but it may slow down recording or cause overheating. Check your camera’s manual to confirm compatibility with this feature.