Synergy Digital Camera Batteries Compatible with Nikon EN-EL9 - Pack

In this review of the Synergy Digital replacement battery pack, the bottom line is simple: photographers who need reliable, affordable spare power for older Nikon bodies will find clear value here. The set of four 7.4V, 1400 mAh li-ion cells is aimed at users of Nikon D3000, D40 and similar models, and the main reason to buy is straightforward - dependable, high-capacity replacements that match the original form factor and keep a camera shooting through longer sessions without a major cost premium. The review covers compatibility, runtime expectations and build quality based on the product specs.

Key Features

• High capacity: The 1400 mAh rating delivers longer shooting time than many older OEM batteries, which helps when you cannot recharge during a shoot.
• Wide compatibility: Labeled compatible with Nikon EN-EL9, EN-EL9a and EN-EL9e and with many third-party codes, it works with D3000, D40 and several other Nikon models.
• Japanese cells: Made with high quality Japanese cells, which suggests stable voltage and reasonable cell longevity compared with generic pack assemblies.
• Set of four: Shipping as a four-pack reduces replacement frequency and gives flexibility to keep multiple spares for travel or multi-day shoots.
• Three year warranty: A multi-year warranty provides extra assurance against early failure or manufacturing defects.

Who It's For

This battery pack is best for hobbyists, student photographers and owners of entry-level Nikon DSLRs who want an economical way to extend shooting time without relying on a single OEM battery. It is also useful for anyone who travels or shoots events and needs multiple charged spares to avoid swapping out cameras to recharge.

Users who require the absolute longest possible battery life per charge, industrial-grade performance under extreme temperatures, or official manufacturer replacement parts for professional warranty reasons should look elsewhere; this pack is optimized for cost, compatibility and everyday reliability rather than official OEM branding.

Pros & Cons

Pros

• Good capacity at 1400 mAh provides longer runtime than many original-era batteries.
• Broad cross-compatibility with multiple third-party codes and Nikon EN-EL9 variants simplifies buying the correct pack.
• Four-pack format and three year warranty offer strong value and peace of mind for frequent shooters.
• Lightweight construction makes it easy to carry several spares without bulk.

Cons

• Not an official Nikon part, so some professionals preferring OEM branding may avoid it.
• Performance in extreme cold or after many charge cycles will depend on usage and is not individually documented here.

Specifications

Chemistry	li-ion
Voltage	7.4V
Capacity	1400 mAh
Dimensions	1.42 x 2.2 x 0.56 in
Weight	1.9 oz (per battery)
Compatibility	Nikon EN-EL9 / ENEL9 variants; compatible with D3000, D40, D40X, D40A, D5000, D60
Warranty	Three year warranty

Our Verdict

For owners of legacy Nikon entry-level DSLRs who need cost-effective spares, this Synergy Digital four-pack is a practical buy: it pairs a useful 1400 mAh capacity and broad compatibility with a reassuring three year warranty. It is not an OEM Nikon cell, but for most amateur and enthusiast use cases it represents good value and sensible backup power for shooting sessions and travel.

Frequently Asked Questions

Will these batteries fit my Nikon D3000?
Yes, the pack is listed as compatible with Nikon D3000 and other EN-EL9 compatible models.

How many batteries are included?
The product ships as a set of four li-ion batteries, allowing multiple spares for extended shoots.

Is there a warranty?
Yes, the batteries come with a three year warranty from the manufacturer.