215-660-3732
Souderton, PAExplore the 2026 Jayco Terrain
Compare the Terrain 19Y (Lithionics Lithium System) and the Terrain 19YG (Cummins Generator)—engineered for off-grid adventuring, rugged terrain, and modern tech.
Terrain 19Y: Powered by Lithionics Battery
- 51V, 165AH Lithionics Battery – UL 1973 tested and certified for crush/fire safety
- Safe, non-toxic iron phosphate cells
- NeverDie battery management system for longer battery life
- 48V DC A/C – draws directly from lithium for efficient cooling
- 3000W Inverter for appliance power
- 51V PowerFit Alternator:
- 2000W charge at idle (650 RPM)
- 6500W charge at cruise (1500+ RPM)
Terrain 19YG: LP Generator Performance
- Cummins Onan 2500i LP Generator
- 6-gallon fixed LP tank
- Variable RPM for better fuel economy:
- .18 gal/hr (no load)
- .31 gal/hr (half load)
- .55 gal/hr (full load)
- Quiet operation: 65 dBA at half load
- Up to 8 hours runtime (at full load, 80% tank)
- 2000W inverter
Compare Jayco Terrain 19Y vs 19YG
| Feature | Terrain 19Y (Lithium) | Terrain 19YG (Generator) |
|---|---|---|
| Power Source | 51V, 165AH Lithionics Lithium Battery | Cummins Onan 2500i LP Generator |
| Inverter | 3000W | 2000W |
| Air Conditioning | 48V DC A/C (runs directly from battery) | Runs from generator or inverter |
| Fuel Source | Battery charged by 51V PowerFit alternator | 6-gallon Liquid Propane tank |
| Charging While Driving | 2000W at idle, 6500W at cruise | Not applicable |
| Noise Level | Silent Operation | 65 dBA at half load |
| Run Time | Based on battery capacity and alternator charge | Up to 8 hours (at 80% LP, full load) |
Terrain Series Highlights
- 2-Year Limited Warranty – Double the industry standard
- JRide Handling Package – Reduces body roll for a smoother ride
- 17” All-Terrain Tires with black aluminum wheels
- Mercedes-Benz AWD Chassis – 2500 van with 2.0L turbo diesel (211 HP / 332 lb-ft torque)
- Driver-Focused Cabin – Heated seats, adaptive cruise, 360° cameras, Apple CarPlay, Android Auto
- Starlink Satellite Internet (Optional) – Stay connected off-grid
- Off-Grid Freedom – Choose the setup that fits your travel style: lithium for silent efficiency or generator for traditional power needs
Why Buy Your Jayco Terrain from Fretz RV?
- Family-Owned Since 1946 – With nearly 80 years of RV expertise, we offer personal service you won’t find at big-box dealerships.
- Jayco Experts – Our team is deeply familiar with Jayco products, including all Terrain configurations, and will help you choose the best fit.
- Trusted by RVers Nationwide – We regularly help out-of-state buyers with walk-throughs, paperwork, and delivery logistics.
- Service You Can Count On – In-house service department ready to assist before, during, and after your purchase.
- Competitive Pricing – We offer fair pricing with no high-pressure tactics.
2026 Jayco Terrain FAQ
What's the difference between the 19Y and 19YG?
The 19Y comes with a high-capacity lithium battery system, while the 19YG uses a Cummins LP generator. Your choice depends on your off-grid power preferences.
Can I run the A/C off the lithium system?
Yes! The 48V DC air conditioner in the 19Y runs directly off the lithium battery, making it more efficient and quieter than generator-powered models.
How long can the generator in the 19YG run?
With a full propane tank, the Onan generator can run up to 8 hours at full load, offering dependable power in remote locations.
Do you offer financing?
Yes, Fretz RV offers competitive financing options for qualified buyers. Contact us for a quick pre-approval.
Can I get Starlink with the Terrain?
Yes! Starlink satellite internet is available as an option, perfect for working or streaming while off-grid.
Ready to Explore the 2026 Jayco Terrain?
Whether you prefer the advanced Lithionics lithium system or the reliable Onan LP generator, the 2026 Jayco Terrain is built for freedom, comfort, and performance.
Contact Fretz RV today to learn more, get pricing, or schedule a tour!