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- Built-in USB-C charge port offers quick, simple, versatile charging
- 4000mAh capacity retains power for long, creating reliable runtimes
- Built-in protection circuits prioritize safety in daily use
- 7A stable output current delivers efficiency to compatible flashlights
- Size: 18650
- Voltage: 3.6/3.7
- Rechargeable: Yes
- Chemistry: Li-Ion
- Capacity (mAh): 4000
- Terminal Type: Button Top
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Description
Fenix ARB-L18-4000U
USB-C Rechargeable 18650 Battery
If you're looking for simple recharging in an 18650 battery, look no further than the Fenix ARB-L18-4000U! The ARB-L18-4000U includes a built-in USB-C charge port for easy and fast recharging every single time. Choose to recharge via wall chargers, power banks, laptops, and more to conveniently charge at home, work, or while you're on the go.
High Capacity and Protected
This 18650 battery has a capacity of 4,000mAh to retain plenty of power and offer reliable runtimes every time. This battery has 3 sets of overheating protections internally; pressure relief valve protection, separate microporous protection, and PTC cathodal block protection. It sports over-discharge, overcharge, and short-circuit protections. This ensures your safety, as well as the battery and other electronics you pair with it. It has a maximum charging current of 7A and 3.6 Volts, delivering reliable power flow to many compatible flashlights or other electronics.
- Notable Features
- » Built lead and mercury-free, this is an environmentally-friendly battery
- » Choose to recharge via USB-C port, smart charger, or in compatible flashlights
- » Compatible with many Fenix Flashlights, from the Fenix TK11 TAC, HM62-T, PD32R, and much more
Item Details
| Brand | Fenix |
| SKU | FENIX-ARB-L18-4000U |
| Series | ARB |
| MPN | ARB-L18-4000U |
| UPC | 6942870311142 |
| Size | 18650 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 4000 |
| Chemistry | Li-Ion |
| QTY Per Package | 1 |
| California Residents | see Prop 65 WARNINGS |
Specifications
| Size | 18650 |
| Voltage | 3.6/3.7 |
| Battery Rechargeable | Yes |
| Capacity (mAh) | 4000 |
| Terminal Type | Button Top |
| Protected | true |
| Integrated Charge Port | Yes |
| Equivalent Types | 168A, 18650, 19670, Protected 18650, Unprotected 18650 |
Unit Dimensions
| Length | 2.83 in (72 mm) |
| Diameter | 0.74 in (19 mm) |
| Weight | 1.94 oz (55 g) |
Certifications & Transport
| Certifications/Standards | ANSI, CE, FCC, UKCA |
| Country Of Origin | China |
| HTS Code | 85076000 |
Packaging/Shipping Dimensions
| Length | 5.72 in |
| Width | 3.12 in |
| Height | 1.18 in |
| Shipping Weight | 0.195 lb |
Additional Details
| Warranty |
Fenix 1 Year Warranty Battery Junction Warranty |
| Return Policy | Return Policy |
Bright Buys
- Trusted and reliable; consistently rated as a top customer pick for LED flashlights
- Superior 1,600mAh capacity means longer runtimes and less frequent battery changes
- Optimized for both high and low drain devices
- State-of-the-art automated production lines ensure the highest quality and safety protections
- Ideal for low-drain applications that require a primary battery to provide constant power
- 10-year shelf life - stock up for emergencies!
- The best choice for consistent power, great in low-drain devices like remotes
- Safe and reliable - capable of performing in high or low temperatures
- 225mAh capacity drives long runtimes for watches and electronics
- CR2032 coin cells packed with 3V of power
- Convenient 6-piece retail card provides backup batteries
- Easily replaceable primary lithium cells
- Top recommended battery for Apple AirTags
- 11-in-1 card sized tool fits in your wallet or on a keychain!
- Packed with handy tools including a screwdriver & 7 wrench settings
- Serrated saw and straight-edge knife for quick cutting jobs
- Can + bottle openers for campsite meals or end-of-shift relaxation
- Independent 4-slot charging for different batteries
- Touch screen control provides user-friendly operation
- 4 working modes for charging, testing batteries, and more
- Compatible with Li-ion, Ni-Cd, & NiMH batteries
- Quick Charge 3.0 technology enables fast and efficient device charging
- USB compatibility supports a wide range of electronic devices
- Compact adapter design makes it ideal for travel and everyday use
- Intelligent charging management helps optimize power delivery
- Universal cable to consolidate chargers for work, home, or EDC use
- USB-C, Micro-USB, and Lightning plugs for various electronics
- USB-C input with USB-A adapter for use with any USB power source
- 3.93ft long cord, allowing you to use your phone during recharging!
- Premium materials for durability and fast charge speeds
- Fits flashlights w/ diameter of 24-32mm & length of 130mm-170mm
- Great for EDCs, tactical lights, slim lights, & more!
- Durable and flexible nylon material keeps lights secure
- 33g weight won't drag you down!
- Portable powerhouse - emits a 1148ft beam from a 3.4in light!
- Strobe and SOS modes accessible for emergencies
- Dual-fuel power - swap in a CR123A when needed
- Strong magnetic tailcap for hands-free repair jobs
- USB-C port offers seamless recharging from anywhere!
- 3,000 lumens and a 250-meter throw - fierce illumination to light up your backyard
- Multiple output modes are accessible via easy side switch operation
- Strobe, SOS, and beacon modes offer distinct signaling capability
- High-capacity battery supports the light with a maximum 227-hour runtime



