FirstPower EN-EL15C 2400mAh 2-Pack Replacement Batteries - USB-C Fast

In this review the FirstPower EN-EL15C 2400mAh 2-pack is evaluated as a practical power upgrade for photographers who need reliable on-camera power and flexible charging. The biggest reason to consider these batteries is the built-in USB-C fast charging, which removes the need to carry a dedicated charger and lets you top up from a power bank or wall charger. The pair provides a straightforward, fully decoded replacement for Nikon EN-EL15 variants and aims to extend shooting time without camera incompatibility warnings.

Key Features

• USB-C Portable Fast Charging: The integrated Type-C port and included 2-in-1 cable let you charge both batteries directly from USB output devices, reducing carry weight and simplifying workflows.
• High Charging Speed: With 5V/2A input the pack can fully charge two batteries in about 2.5 hours, useful for quick turnarounds between shooting sessions.
• Sufficient Capacity: Each 2400mAh, 7.2V battery gives a practical runtime extension over single cells, making them useful as on-location spares.
• Full Camera Decoding: FirstPower states these batteries are fully decoded for Nikon compatibility, preventing incompatible battery warnings in the camera.
• Multiple Safety Protection: A built-in intelligent chip offers over-voltage, over-current, short circuit, high temperature and over-charge protections to protect camera electronics.
• Portable Design: Compact and lightweight construction makes this two-battery set convenient for travel and outdoor shoots.

Who It's For

Photographers who shoot events, travel, or long sessions and want the convenience of charging from USB sources will find this 2-pack especially helpful; the USB-C port and included cable remove the need to pack a separate charger. Users of Nikon bodies that take EN-EL15 family batteries will appreciate the stated full decoding to avoid camera warnings.

Those who need factory OEM warranty coverage or the absolute longest factory-rated runtime per cell might prefer an original manufacturer battery, but for most enthusiast and prosumer users who value portability and flexible charging, this FirstPower kit is a practical, lower-cost alternative.

Pros & Cons

Pros

• USB-C fast charging lets you recharge from power banks and common USB chargers.
• 2400mAh capacity per cell provides useful extra runtime compared with a single battery.
• Fully decoded compatibility with many Nikon models prevents camera warnings and ensures normal functioning.
• Built-in safety features and CE/FCC/RoHS certifications add confidence in daily use.

Cons

• Some users report around 70 minutes of continuous shooting per battery in real use, so heavy shooters will still need multiple spares.
• Not an OEM battery, so users seeking original manufacturer support may prefer factory batteries.

Specifications

Model	EN-EL15C replacement (2-pack)
Capacity	2400mAh
Voltage	7.2V
Energy	17.28Wh
Charging	USB-C 5V/2A, included 2-in-1 cable
Compatibility	Decoded for Nikon EN-EL15 series and listed Nikon models
Certifications	CE / FCC / RoHS

Our Verdict

The FirstPower EN-EL15C 2400mAh 2-pack is a solid value for photographers who want flexible USB-C fast charging and reliable decoded compatibility with Nikon cameras. It is especially good for travelers and event shooters who need quick top-ups from power banks, though heavy continuous shooters should carry extra spares since runtime per cell is modest compared with carrying several batteries.

Frequently Asked Questions

Will these batteries work in my Nikon camera?
Yes, FirstPower lists full decoding for Nikon EN-EL15 family cameras including many Z and D series models, so the camera should accept them without compatibility warnings.

How long does it take to charge both batteries?
Using the included 2-in-1 USB-C cable and a 5V/2A USB source, both batteries can be fully charged in about 2.5 hours.

Can I use a power bank to charge these?
Yes, the batteries support USB-C charging from power banks or USB wall chargers, making them convenient for location work.