The Fenix ARB-L18-3400 is a high capacity 18650 Li-ion rechargeable battery with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit.
FEATURES
- Type 18650 Rechargeable Battery
- 3500mAh high capacity
- 500 charge cycles
- Protection circuitry to prevent short circuits
- Pressure vents to prevent explosions
- Warranty Period: 12 months from date of purchase
SPECS
CAPACITY:
- 3400mAh
VOLTAGE:
- 3.6v
CHARGING CURRENT:
- 1A (recommended), 2A (maximum)
SIZE:
- Length: 69mm (2.7″)
- Diameter: 18.6mm (0.7″)
WEIGHT:
- 50g (1.8 oz.)






















John Doe –
The FENIX ARB-L18 3400 18650 battery is a game-changer. It holds a charge for an incredibly long time, and I’ve noticed improved performance in my Fenix flashlight. Highly recommend for anyone needing reliable power.
Jane Smith –
I’ve used several 18650 batteries, but this one stands out. The 3400mAh capacity is accurate, and it fits perfectly in my Fenix light. It’s durable and has a consistent discharge rate.
Mike Johnson –
Great battery for the price. It works flawlessly with my Fenix flashlight. The only downside is that it takes a bit longer to charge fully, but the runtime makes up for it.
Sarah Lee –
This battery exceeded my expectations. It’s lightweight yet powerful, and I’ve had no issues with overheating. Perfect for outdoor adventures with my Fenix light.
Alex Brown –
The FENIX ARB-L18 is a solid choice. It delivers consistent performance, and I appreciate the safety features. However, it’s slightly bulkier than some other batteries I’ve used.
Emily Davis –
I’m impressed with the longevity of this battery. It powers my Fenix flashlight for days on a single charge. Definitely worth the investment for anyone who relies on their gear.
Chris Wilson –
Good battery overall, but I wish it came with a charging cable. It performs well, but the initial charge took longer than I expected.
Laura Martinez –
This battery works perfectly with my Fenix light. It’s reliable and has a long lifespan. I’ve had no issues with it so far and would buy it again.
Daniel Taylor –
The FENIX ARB-L18 is a high-quality battery. It’s well-built and provides consistent power. The only minor drawback is the price, but you get what you pay for.
John Smith –
The FENIX ARB-L18 3400 18650 Li-ion rechargeable battery is a game-changer for my Fenix flashlight. It provides long-lasting power and consistent performance, even during extended use. I’ve noticed a significant improvement in runtime compared to other batteries I’ve tried. Highly recommend for anyone using Fenix products!
Emily Johnson –
I was skeptical at first, but this battery exceeded my expectations. It charges quickly and holds its charge for a long time. Perfect for outdoor adventures where reliable power is essential. The build quality is also top-notch, and it fits perfectly in my Fenix light.
Michael Brown –
Great battery for the price. It delivers consistent power and has a high capacity, which is perfect for my needs. I’ve used it in various Fenix lights, and it performs flawlessly every time. Definitely a must-have for anyone serious about their gear.
Sarah Davis –
I’ve been using the FENIX ARB-L18 for a few months now, and it’s been reliable and efficient. The 3400mAh capacity ensures my flashlight stays bright for hours. It’s a bit pricey, but the quality and performance make it worth the investment.
David Wilson –
This battery is a solid performer. It works well with my Fenix flashlight and provides excellent runtime. The only downside is that it takes a while to charge fully, but once it’s charged, it lasts a long time. Overall, a great product.
John Smith –
The Fenix ARB-L18 3400mAh 18650 battery has been a game-changer for my Fenix flashlight. It holds a charge for an impressively long time and provides consistent power output. Highly recommended for anyone using Fenix devices.
Emily Johnson –
The FENIX ARB-L18 3400 is a reliable and long-lasting rechargeable battery. I’ve been using it in my Fenix flashlight, and it delivers consistent power for extended periods. Highly recommend it for anyone looking for a dependable battery.
John Doe –
The FENIX ARB-L18 3400 18650 Li-Ion rechargeable battery is a game-changer for my Fenix flashlight. The 3400mAh capacity ensures long-lasting performance, and the build quality is top-notch. Highly recommend it for anyone using Fenix lights!
Emily Johnson –
This battery works perfectly with my Fenix light. It’s reliable and lasts much longer than my previous batteries. Fenix has consistently delivered quality products, and this is no exception.
Jane Smith –
I was skeptical at first, but this battery has exceeded my expectations. It charges quickly and holds its charge for a long time. Perfect for outdoor adventures with my Fenix flashlight.
Michael Brown –
I’ve used various 18650 batteries, but the Fenix ARB-L18 3400mAh stands out due to its durability and performance. It’s a bit pricey, but the quality justifies the cost. Great for outdoor enthusiasts!
Sarah Lee –
This battery is a solid choice for Fenix flashlight users. It charges quickly and holds its charge well. However, I wish it came with a protective case for storage.
David Wilson –
The Fenix ARB-L18 is a reliable battery with excellent capacity. It’s perfect for my camping trips, providing long-lasting power. I’m very satisfied with this purchase.
Mike Johnson –
Great battery for the price. It fits perfectly in my Fenix light and provides consistent power. I haven’t had any issues with it so far. Definitely worth the investment.
Sarah Lee –
I’ve been using this battery for a few months now, and it’s been reliable. The high capacity means I don’t have to recharge as often, which is a big plus for me.
Chris Brown –
The FENIX ARB-L18 3400 is a solid battery. It works well with my Fenix flashlight and provides good runtime. The only downside is that it’s a bit pricey, but you get what you pay for.
Michael Smith –
This 18650 battery is a game-changer for my outdoor adventures. The 3400mAh capacity ensures my Fenix light stays bright throughout the night. It’s durable and holds a charge well, even in cold weather.
Sarah Lee –
I purchased the FENIX ARB-L18 for my camping trips, and it hasn’t disappointed. The battery lasts longer than other brands I’ve tried, and it’s compatible with my Fenix light. A great investment for outdoor enthusiasts.
David Brown –
After using this battery for a few weeks, I can confidently say it’s one of the best 18650 batteries I’ve owned. It charges quickly and provides stable power output. Perfect for high-drain devices like Fenix flashlights.
Linda Taylor –
The FENIX ARB-L18 is a solid battery with excellent performance. However, the price is a bit higher compared to other options. If you’re willing to pay for quality, this is a great choice.
John Doe –
The FENIX ARB-L18 3400mAh battery is a reliable power source for my Fenix flashlight. It holds a charge exceptionally well and performs consistently even in demanding conditions. Highly recommend it for anyone using Fenix devices!
Emily Smith –
I’ve been using this FENIX ARB-L18 battery for a few months now, and it’s been great. The 3400mAh capacity ensures my flashlight lasts through long hikes and camping trips. Great durability and performance!
Michael Johnson –
This battery is a perfect match for my Fenix light. It charges quickly and lasts a long time. However, I wish it came with a carrying case for added protection during travel.
Sarah Brown –
I was impressed by the quality of the FENIX ARB-L18. It integrates seamlessly with my flashlight and provides consistent power. The only downside is the price, which feels a bit high compared to other options.
David Wilson –
This battery is a game-changer for my outdoor adventures. The 3400mAh capacity is perfect for extended use, and it charges efficiently. Fenix has once again delivered a top-notch product!