AJC Battery Compatible with Honda TRX400 FA A 400CC ATV (2004-2007)

In this review of the AJC replacement battery for the Honda TRX400 FA A 400CC ATV (2004-2007), the bottom line is simple: this is a practical swap for riders who need dependable starting power and durable construction without premium brand markup. The reviewer found it best for owners replacing an old or failing battery who want a direct-fit option with an advertised 120 CCA and conventional terminal layout. It is not a high-capacity marine or automotive battery, but for everyday powersports use it delivers consistent cranking and rugged build quality you can rely on on the trail.

Key Features

• Direct replacement fit: Designed to replace the original YTX9-BS style batteries so installation is straightforward with the correct polarity and terminal B layout.
• Reliable starting power: Rated at 120 CCA, it provides adequate cranking power for the TRX400 engine in a variety of temperature conditions typical for trail riding.
• Rugged construction: Built for off-road use so the casing and internal design are intended to withstand vibration and routine powersports stress.
• Increased capacity: Delivers more cranking reserve than older weak batteries, helping users start more consistently after sitting or in cooler weather.
• Wide compatibility: Cross-referenced to many common YTX9-BS and 9-BS group numbers, making it useful for several small ATVs and motorcycles that use the same size.

Who It's For

This AJC unit suits riders who maintain a Honda TRX400 FA A from model years 2004-2007 and want a straightforward replacement battery with known fit and terminal orientation. It is especially appropriate for weekend trail riders, small farm use, or any owner who needs a reliable starter battery without special charging or handling requirements.

It is less suitable for owners looking for a sealed gel cell with very long shelf life or those who require very high cold-cranking performance beyond 120 CCA. Riders who need a maintenance-free AGM with extreme vibration isolation or who require a battery for larger engines should look for a higher-capacity or differently specified unit.

Pros & Cons

Pros

• Direct-fit replacement for many YTX9-BS and 9-BS designated batteries, simplifying installation.
• Solid 120 CCA rating that provides dependable starting in typical powersports conditions.
• Construction aimed at off-road durability so it tolerates vibration and regular use.

Cons

• Not a high-capacity automotive battery, so users who need extra reserve or extreme cold performance may want a different specification.

Specifications

Brand	AJC
Model fit	Honda TRX400 FA A 400CC ATV (2004-2007)
Cold Cranking Amps (CCA)	120
Polarity	+/ -
Terminal	Terminal B
Replaces	YTX9-BS and many equivalent 9-BS style numbers

Our Verdict

The AJC replacement battery is a practical, good-value option for TRX400 FA A owners who need a reliable, direct-fit starter battery with 120 CCA and rugged construction. It covers the typical needs of trail riders and small powersports users and represents sensible value for routine replacement without overpaying for unnecessary features.

Frequently Asked Questions

Will this battery fit my TRX400 FA A?
Yes, it is listed as a direct replacement for the Honda TRX400 FA A 400CC ATV from 2004-2007 and matches the common YTX9-BS form factor and terminal layout.

What is the cold cranking amp rating?
The battery is rated at 120 CCA, intended for normal powersports starting needs rather than extreme cold climates.

Is this a sealed AGM battery?
The listing emphasizes rugged construction and replacement compatibility; users should check the seller details for the exact sealed or maintenance specifications if AGM chemistry is required.