MARXON Auxiliary Battery 12V 14Ah AUX14 — Compact AGM, 200 CCA, BCI Group 400

MARXON AUX14 is a compact 12V AGM auxiliary battery delivering 14Ah capacity and 200 CCA in a maintenance-free, leak-resistant package designed for vehicles and portable power accessories.

If you need a reliable secondary power source for start-stop systems, backup electronics, or powering accessories when the main battery is reserved for cranking, the MARXON AUX14 offers a small-footprint solution. Its absorbed glass mat (AGM) design eliminates the need for topping up fluid, while a corrosion-resistant alloy and quality controls aim to extend service life in demanding conditions.

What equipment and vehicles work well with this auxiliary battery?

The AUX14 is sized for smaller auxiliary applications: motorcycle and ATV accessory systems, caravan electronics, alarm/telemetry modules, and marine or automotive accessory banks. It’s BCI Group 400 compatible where compact standby capacity is required.

• 12V output with 14Ah (20hr) usable capacity for sustained accessory power
• 200 CCA rating for supporting cold-start assist scenarios when needed
• Compact BCI Group 400 footprint fits tight battery trays and accessory bays
• Maintenance-free AGM design suited to upright or semi-upright installations

How durable is the AUX14 and what lifespan can I expect?

MARXON builds the AUX14 with a high-purity internal structure and a patented alloy that resists corrosion, helping the battery hold capacity longer under normal use. The manufacturer states an expected service life exceeding five years when used and charged appropriately.

• Corrosion-resistant micro-crystal internal structure for extended longevity
• Patented alloy reduces terminal and plate degradation
• AGM construction prevents electrolyte loss and improves vibration resistance
• Follow proper charging practices to maximize service life

What are the key specifications and installation notes?

The AUX14 is a 12V, 14Ah battery with top-mounted [+,-] polarity, measuring roughly 5.91 × 3.43 × 5.71 inches and weighing about 9.91 pounds. It’s sealed and rated as maintenance free, so you don’t add acid or water during normal operation.

• Voltage: 12V; Capacity: 14Ah (20‑hour rate)
• Cold cranking capability: 200 CCA
• Dimensions: 5.91L × 3.43W × 5.71H inches; Weight: ~9.91 lbs
• Polarity: [+,-] top terminals; sealed AGM — install upright unless specified otherwise

What warranty and support does MARXON provide?

MARXON supplies a 36-month warranty and maintains U.S.-based offices and warehouses to handle customer service and returns. The brand commits to responsive support with stated reply times to address problems locally.

• 36 months coverage from date of purchase for manufacturing defects
• U.S. offices and warehousing for faster replacements and service
• Manufacturer response commitment—customer contact within 12 hours
• CE-certified production in an ISO-certified facility for consistent quality

Who is this for: The MARXON AUX14 is for vehicle owners, RV and marine hobbyists, and equipment installers who need a compact, maintenance-free auxiliary battery with reliable standby power and corrosion resistance. Choose this unit if you want a sealed AGM battery with a small footprint, moderate cranking support, and manufacturer-backed warranty and U.S. support infrastructure.