What Is Chrysler Pacifica ESS Battery?
The Chrysler Pacifica ESS (Energy Storage System) battery refers to the 16kWh lithium-ion battery pack powering the plug-in hybrid (PHEV) variant. This high-voltage battery enables an EPA-rated 50km pure electric range, supporting daily urban commutes without engine engagement. Integrated with a 3.6L V6 Atkinson-cycle engine and dual-motor e-CVT, the ESS prioritizes energy recuperation during braking while maintaining seamless transitions between EV and hybrid modes.
What defines the ESS battery’s technical specifications?
16kWh capacity and 50km EV range characterize this PHEV battery. Operating at ~300V nominal voltage, it utilizes prismatic lithium-ion cells optimized for thermal stability and rapid charge/discharge cycles.
Practically speaking, the ESS employs liquid cooling to maintain 25–35°C operational temperatures, crucial for preserving capacity in extreme climates. A 7.2kW onboard charger replenishes the battery in 2 hours via Level 2 stations. Pro Tip: Avoid frequent deep discharges below 20% SOC—shallow cycling between 30–80% extends lifespan beyond 150,000 miles. For example, the ESS powers climate control and acceleration assist even during hybrid operation, reducing fuel consumption by 30% compared to conventional minivans.
How does the ESS interact with Pacifica’s powertrain?
The battery feeds dual 90kW traction motors through a power control unit, enabling torque vectoring during acceleration and regenerative braking. Combined system output reaches 260hp, with instantaneous electric torque eliminating transmission shift lag.
Beyond propulsion, the ESS supports a 1.5kW 120V AC outlet for camping equipment. Transitional modes like “E-Save” reserve battery capacity for urban zones. Warning: Never jump-start other vehicles using ESS terminals—use the auxiliary 12V battery instead. Real-world testing shows 0–100km/h acceleration in 7.8 seconds using combined ICE-electric power, outperforming non-hybrid competitors by 1.2 seconds.
| Parameter | ESS Battery | Conventional 12V |
|---|---|---|
| Voltage | 300V DC | 12V DC |
| Energy Capacity | 16kWh | 0.7kWh |
| Primary Function | EV propulsion | Accessories/startup |
Battery Expert Insight
FAQs
Yes, but requires dealership diagnostics to reset battery management firmware—third-party replacements may void the 10-year/150,000-mile warranty.
Does towing affect ESS lifespan?
When towing 1,600kg+, the system automatically engages engine-driven charging, which increases charge cycles. Maintain monthly full-balance charges to prevent cell voltage drift.