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Fenix E-Spark Keychain Flashlight Emergecny Powerbank
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$34.99
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SKU: ESPARKBK-6942870308975
Overview
Built for everyday carry, this compact keychain light adds a practical backup power option for moments when a phone needs a small boost before the next charge. Its four LEDs, USB Type-C charging capability, and battery level indication make it a straightforward tool for short-term use around camp, in the truck, or during unexpected downtime. The lockout function helps prevent accidental activation, while the tail protection cover can also serve as a diffuser tip on the light head. With an aluminum body and hard-anodized finish, it is aimed at users who want a simple, multi-purpose light without carrying a separate power bank.
Why Hunters Choose the Fenix
Keychain Flashlight
A compact backup power bank
Usb Type-c
Charging support adds convenient phone
Battery Level
Indication allows quick checking of
Lockout Function
Helps prevent accidental activation in
Tail Protection
Cover doubles as a diffuser
Key Features
- Keychain flashlight with everyday carry size and built-in backup power bank function.
- USB Type-C port supports mobile phone charging in emergency situations.
- Four LEDs with a stated lifespan of 50,000 hours.
- Built-in 800 mAh Li-Polymer battery.
- Lockout function helps prevent accidental activation.
- Battery level indication allows quick checking of remaining charge.
- Tail protection cover can be used as a diffuser tip on the light head.
Best Used For
- Emergency backup light and phone top-off for hunters waiting out long sits or late returns.
- Keychain carry for users who want a compact flashlight with built-in charging capability.
- Camp, truck, or pack backup for situations where a small amount of phone power matters.
- Everyday carry for outdoorsmen who prefer a simple light with battery level indication.
- Use by hunters needing a lightweight, grab-and-go light with accidental-activation lockout.
Specifications
| Battery Capacity | 800 mAh |
|---|---|
| Battery Level Indication | Yes |
| Battery Type | Li-Polymer |
| Blade Finish | HAIII hard-anodized anti-abrasive finish |
| Charging Port | USB Type-C |
| Diffuser Tip | Tail protection cover can be used as a diffuser tip fitted on the light head |
| Four Quality Leds | Four quality LEDs with a lifespan of 50,000 hours |
| Led Lifespan | 50,000 hours |
| Lockout Function | Yes |
| Material | A6061-T6 aluminum |
| Power Bank Function | Yes |
Pros
- Combines a keychain flashlight with a compact backup power bank.
- USB Type-C charging support adds convenient phone top-off capability.
- Battery level indication allows quick checking of remaining charge.
- Lockout function helps prevent accidental activation in storage or carry.
- Tail protection cover doubles as a diffuser tip for the light head.
- Made from A6061-T6 aluminum with HAIII hard-anodized finish.
Considerations & Trade-offs
- The power bank function is limited to emergency top-ups and is described as adding about 10% to a phone battery, so it is not a substitute for a dedicated charger or larger power bank.
- The built-in 800 mAh battery means runtime and charging reserve are necessarily compact, which suits carry convenience more than extended use.
- The USB Type-C charging and power-bank function add versatility, but they also make the light dependent on having the right cable and compatible device when you need the backup power.
- The tail protection cover can be used as a diffuser tip on the light head, which adds flexibility but is an extra step compared with a simpler fixed-beam keychain light.
Suggested Comparisons
- Keychain flashlight
- Everyday carry flashlight
- Compact power bank
- Emergency backup light
Suggested Accessories
- USB Type-C charging cable
- Portable power bank
- Keychain carabiner
- Battery storage case
Frequently Asked Questions
What is the Fenix E-SPARK designed to do besides provide light?
It is an everyday carry keychain flashlight that also functions as a small backup power bank for mobile phone charging.
How much phone charging can the power bank provide?
The product description says it can charge about 10% of a phone’s battery, which is presented as a small emergency top-up rather than a full recharge.
What battery does the E-SPARK use?
It has a built-in 800 mAh large-capacity Li-Polymer battery.
Does it have any features to help prevent accidental activation?
Yes. The listed lockout function is designed to avoid accidental activation.
What charging connection does it use for the power bank function?
The product lists a USB Type-C port for mobile phone charging.