Keychain flashlight Fenix ESPARKBK — LED, 4 LEDs, USB rechargeable, built-in LiPo battery, IP24, black

The Fenix E-SPARK keychain flashlight combines a compact LED torch and a small emergency power bank in one slim, portable unit. It features four LEDs with long service life and a built-in 800 mAh lithium‑polymer battery rechargeable via USB Type‑C. Designed for everyday carry, this black aluminum keychain light offers basic splash protection and practical functions for short-range illumination and emergency phone top-ups.

Advantages

The integrated 800 mAh Li‑Po cell doubles as a backup power bank to provide a quick battery boost to a mobile phone when needed, while the flashlight delivers three brightness levels plus a red light for preserving night vision. The tail cap protects the charging port and can be used as a diffuser. The aluminum body with HAIII hard‑anodized finish ensures good surface durability for a small everyday carry item.

Suitable for

• Everyday carry on a keyring for quick access to light
• Short-range tasks such as finding items in a bag or reading maps
• Emergency situations where a small phone top-up (around 10%) is helpful
• Activities that require a red light to preserve night vision

When it may not be suitable

This compact keychain lamp is not designed as a primary lighting source for prolonged outdoor use or work tasks that require high output or long runtimes. Its small 800 mAh battery only provides a limited charging capacity (approximately a 10% phone charge) and is intended for short emergency boosts rather than full charges.

Key specifications

• Light source: 4 LEDs, rated life up to 50,000 hours
• Built-in battery: 800 mAh Lithium‑Polymer (Li‑Po)
• Charging port: USB Type‑C (rechargeable)
• Number of output levels: 3 plus red light mode
• Body material: A6061‑T6 aluminium with HAIII hard‑anodized finish
• Ingress protection: IP24 (splash resistant)
• Colour: Black

How to use

Charge the flashlight using a USB Type‑C cable until the battery level indicator shows full. Press the control button to cycle through the three brightness levels and the red light mode as required. Use the tail cap to cover and protect the charging port when not charging; fitting the tail cap onto the head converts it into a diffuser for softer, close‑range illumination. Engage the lockout function to prevent accidental activation during transport.

What to consider before purchase

• If you need a long‑runtime or high‑output torch, consider a larger dedicated flashlight instead
• Expect only a small emergency phone charge (about 10%) due to the 800 mAh capacity
• IP24 provides splash protection but not full waterproofing — avoid submersion

Usage recommendations

Use the white LEDs for general short‑range tasks and switch to the red light when preserving night vision. Keep the charging port covered with the tail cap to protect it from dirt and moisture, and use the lockout function when carrying the light on a keyring to avoid accidental drain.