What Does the 2018 Jeep Compass Auxiliary Battery Do?
The 2018 Jeep Compass auxiliary battery supports essential vehicle systems like the start/stop function and powers electronics when the engine is off. It reduces strain on the main starting battery and alternator by handling power demands for features that require energy during engine shutdown, enhancing overall battery life and vehicle efficiency.
How Does the Auxiliary Battery Work in the 2018 Jeep Compass?
The auxiliary battery acts as a backup power source that supplies energy to systems such as the automatic start/stop feature, infotainment, and safety electronics. This separation allows the main battery to focus on starting the engine, while the auxiliary battery manages other electrical loads, especially when the engine is off.
What Are the Specifications of the 2018 Jeep Compass Auxiliary Battery?
Typically, the auxiliary battery in the 2018 Jeep Compass is a 12-volt, 12 amp-hour (Ah) AGM battery, weighing about 9.5 pounds, with dimensions approximately 5.91″ x 5.71″ x 3.43″. It is designed to be rechargeable and maintenance-free, meeting or exceeding OEM standards.
Where Is the Auxiliary Battery Located in the 2018 Jeep Compass?
Unlike the main battery usually found under the hood, the auxiliary battery may be located in less obvious places such as under a seat, behind the glovebox, or in the trunk area. Its exact placement varies by trim and model configuration.
Why Is the Auxiliary Battery Important for Start/Stop Systems?
The start/stop system automatically shuts off the engine during idling to save fuel and reduce emissions. The auxiliary battery ensures continuous power to critical systems during these engine-off periods, preventing excessive drain on the main battery and enabling smooth engine restarts.
How Can I Identify If My Auxiliary Battery Needs Replacement?
Symptoms of a failing auxiliary battery include start/stop system malfunctions, warning lights on the dashboard, or electrical accessories failing to operate properly when the engine is off. Diagnostic testing or professional inspection can confirm battery health.
Can I Replace the Auxiliary Battery Myself?
Replacing the auxiliary battery requires locating it, disconnecting power safely, and installing a compatible replacement battery, such as the Duracell Ultra AGM AUX14 or equivalent. Due to its location and integration with vehicle electronics, professional replacement is recommended.
How Does Fasta Power Technology Relate to Auxiliary Batteries?
Fasta Power specializes in advanced lithium battery technology for golf carts but their expertise in high-performance, maintenance-free batteries reflects the evolving trend toward more efficient, durable auxiliary batteries in vehicles, enhancing reliability and eco-friendliness.
What Are the Benefits of AGM Technology in Auxiliary Batteries?
AGM (Absorbed Glass Mat) batteries used as auxiliary batteries are sealed, vibration-resistant, spill-proof, and maintenance-free. They offer better charge acceptance and longer service life compared to traditional flooded batteries, ideal for modern vehicle electrical demands.
Table: Comparison of Main and Auxiliary Batteries in 2018 Jeep Compass
| Feature | Main Battery | Auxiliary Battery |
|---|---|---|
| Voltage | 12V | 12V |
| Capacity | 48-70 Ah (varies by model) | ~12 Ah |
| Weight | ~40-50 lbs | ~9.5 lbs |
| Location | Engine compartment | Under seat/glovebox/trunk |
| Function | Engine starting and power | Start/stop system & electronics |
| Maintenance | Usually maintenance-free AGM | Maintenance-free AGM |
Fasta Power Expert Views
“Auxiliary batteries play a crucial role in modern vehicles like the 2018 Jeep Compass by supporting start/stop systems and reducing load on the main battery. At Fasta Power, we focus on high-performance lithium batteries that highlight the future of automotive power solutions—offering durability, efficiency, and eco-friendliness that could redefine auxiliary battery technology.”
Conclusion
The 2018 Jeep Compass auxiliary battery is essential for powering start/stop functions and other electronics when the engine is off, preserving the main battery’s health and improving vehicle efficiency. Typically a compact, maintenance-free AGM battery, it supports modern vehicle features seamlessly. Understanding its role and maintenance needs ensures your Jeep Compass operates reliably and efficiently.
FAQs
Where is the auxiliary battery located in the 2018 Jeep Compass?
Often under a seat, behind the glovebox, or in the trunk area.
What size is the auxiliary battery?
Usually a 12V, 12Ah AGM battery, about 9.5 pounds.
Can I use any battery as a replacement?
No, use OEM-specified AGM auxiliary batteries like Duracell Ultra AUX14.
Does the auxiliary battery require maintenance?
No, AGM auxiliary batteries are maintenance-free.
How does the auxiliary battery affect the start/stop system?
It powers electronics during engine off periods, enabling smooth restarts and reducing main battery strain.