ACDelco AGM Auxiliary Battery AUX14-200 (88866185) 200 CCA — 36-Month Warranty, Maintenance-Free

ACDelco Gold AUX14-200 (88866185) is a maintenance-free AGM auxiliary battery engineered for reliable starting and deep-cycle performance with a 36-month warranty.

Built to meet OE standards, the ACDelco Gold AUX14-200 is a sealed Absorbed Glass Mat (AGM) auxiliary battery designed as a premium replacement for many General Motors vehicles and a wide range of other makes and models. It combines AGM technology, robust construction, and heavy-duty connectors to deliver consistent power, vibration resistance, and longer service life compared with conventional flooded batteries. Backed by GM and covered by a 36-month warranty, this unit is aimed at drivers who need dependable auxiliary power for start-stop systems, accessories, or vehicles with higher electrical demands.

How does this AGM battery differ from a standard flooded battery?

The AGM design traps electrolyte in glass mats, creating a sealed, maintenance-free unit that resists spills and minimizes dry-out. Compared to conventional lead-acid batteries, AGM typically offers better charge acceptance, improved vibration tolerance, and longer cycle life under deep discharge conditions.

• Maintenance-free: no watering or acid handling required
• Spill-proof sealed construction for safe installation in confined spaces
• Higher charge acceptance for faster recovery after engine-off accessories
• Improved vibration resistance via heavy top lead and large through-partition connections

Will this battery fit my vehicle and replace the OEM unit?

The AUX14-200 is manufactured to meet fit, form, and function specifications for many GM models and is compatible with numerous other makes when the form factor and terminal layout match. Always verify group size, terminal orientation, and electrical requirements against your vehicle’s original battery or owner’s manual before purchasing.

• Designed as a premium aftermarket replacement for OE-style units
• Check physical dimensions and terminal placement for correct fit
• Compatible with vehicles requiring 200 CCA auxiliary performance
• Part number reference: 88866185 (AUX14-200)

What durability and safety features does the AUX14-200 include?

This ACDelco Gold unit includes a leak-proof pressurized valve and high density plate oxide to reduce capacity loss and extend usable life. Heavy top lead and robust through-partition connections increase mechanical strength, while the sealed AGM design lowers the risk of acid exposure and corrosion at terminals.

• Leak-proof pressurized valve system to prevent dry-out and terminal acid damage
• High density plate oxide for maximum power-to-weight and deep-cycle capability
• Heavy top lead and large connections improve vibration resistance
• Manufactured to OEM-level quality and backed by General Motors

How should I maintain and charge this AGM battery for best life?

The AUX14-200 is maintenance-free and does not require water, but appropriate charging and storage preserve its longevity. Use an AGM-compatible charger or a smart charger with an AGM setting, avoid prolonged deep discharges, and store in a cool, dry place if not in use for extended periods.

• Use an AGM-specific or smart charger to avoid under- or over-charging
• Avoid leaving battery in a discharged state for long periods
• Install in vehicles per manufacturer guidance to ensure proper ventilation and mounting
• Observe the 36-month warranty terms and keep purchase documentation

Who is this for? The ACDelco Gold AUX14-200 is ideal for vehicle owners seeking an OEM-quality, maintenance-free replacement battery with enhanced deep-cycle capability—especially those with start-stop systems, accessory-heavy setups, or vehicles exposed to vibration and harsh driving conditions. It's also a practical choice for technicians and fleet managers who prioritize durability, safety, and a 36-month backed warranty for dependable auxiliary power.