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20kWh Off-Grid Cabin Lithium Solar Generator Kit - With 4000 Watts of Solar
Item Code: RS-20kWh48V
Ship Weight: 900 lbs.
Regular Price: $18,999.99
Sale Price: $16,999.99
You Save 11% ($2,000.00)
Product Details
The 20kWh Off-Grid Cabin Lithium Solar Generator Kit - With 4000 Watts of Solar is the perfect addition to your tiny home, RV, Cabin and many more off grid applications. Includes everything needed from installation to operation. Start your solar adventure today!
High Efficiency USA Manufactured 335 Watt Solar Panel:
6500 Watt (6.5kW) 48 Volt Off-grid Hybrid Solar Inverter:

Alpha 5 Powerwall Lithium Iron Phosphate Battery:

• | Perfect for powering Smartphones, Lights, Tablets, 12V Appliances, Laptops, CPAP machines, Display Monitors, Blenders, Speakers, Drills, Power Tools, TV/Electronics, Fridges, Microwaves, and much more! |
• | The Powerwall Lithium Iron Phosphate Battery is designed for 6000+ cycles, making it the most reliable, long lasting, light-weight battery on the market! |
• | Create and Store Off-grid Power using Solar Energy. No More Grid Reliance! |
• | Includes every component needed for installation, connection and power production. |
• | Note: Installation should be performed by professionals only. |
• | Proudly manufactured here in the USA! |
• | Our 335 Watt Solar Panels are designed with high Transmission, AR (anti-reflective) Coated Tempered Glass to maximize light absorption. |
• | Excellent low light performance on cloudy days, mornings and evenings. |
• | The solar panel comes with a 25 year limited power output warranty for guaranteed long lasting performance! |
• | Features a IP65 rated waterproof junction box & IP67 rated waterproof solar connectors. |
• | Easy installation capabilities with Pre-drilled holes compatible with ground mounts, Z brackets, pole mounts and tilt mounts. |
• | Built-in Wi-Fi for mobile monitoring (Android/iOS App is available). |
• | Supports USB On-the-Go function. |
• | Replaceable fan design for ease of maintenance. |
• | Configurable AC/PV output usage timer and prioritization. |
• | Optional DC output for DC fan, LED bulb, router and so on. |

• | The 48V lithium battery has a much longer cycle life capacity, and is easier to maintain compared to other battery technologies. The LiFePO4 technology has better thermal and chemical stability, which improves battery safety and packed with power in a small and lightweight footprint. |
• | 20 Year lifespan with proper maintenance. |
• | Built-in smart battery management system. |
• | Unsurpassed high temperature performance. |
• | Each cell is fused and if for some unlikely situation a cell fails, this design will isolate the cell stopping any other damage and allows the battery to function safely |
• | Lightweight Lithium technology with convenient removable carry handle. |

Specifications
335 Watt Solar Panel | |
Manufacturer Name: | Rich Solar |
Chainable: | Yes |
Dimensions: | 65.2" x 39.2" x 1.57" in |
Weight: | 40.5 lbs |
Rated Power: | 335W |
Maximum Power Voltage (Vmp): | 34.1V |
Maximum Power Current (Imp): | 9.85A |
Open Circuit Voltage (Voc): | 41.6V |
Short Circuit Current (Isc): | 10.4 A |
Maximum System Voltage (Vmax): | 1000 VDC |
Temperature Range: | -40 F - 194 F |
Max Series Fuse Rating: | 20A |
Waranty: | 25 year limited power output | 48 Volt Off-grid Hybrid Solar Inverter (input) |
Selectable Voltage Range: | 90-140 VAC (For Computers) |
AC Input: | 80-140 VAC (For Home Appliances) |
Frequency Range: | 50 Hz/60 Hz (Auto Sensing) |
Voltage: | 120 VAC | Output |
Output: | 6500 Watts |
AC Voltage Regulation (Batt. Mode): | 120VAC 5% |
Surge Power: | 15000VA |
Efficiency (Peak): | 90% ~ 93% |
Transfer Time: | 15 ms (For Personal Computers), 20 ms (For Home Appliances) |
Waveform: | Pure Sine Wave |
No Load Power Consumption: | <70W |
Optional DC Voltage: | 12 VDC ą 5%, 100W |
Dual Outputs: | Yes | Battery |
Battery Voltage: | 48 VDC |
Floating Charge Voltage: | 54 VDC |
Overcharge Protection: | 66 VDC | Solar Charger & AC Charger |
Solar Charger Type: | MPPT |
Maximum PV Array Power: | 8000W (4000W x 2) |
MPPT Operating Voltage Range: | 90 ~ 230 VDC |
Maximum PV Array Open Circuit Voltage: | 250 VDC |
Maximum Solar Charge Current: | 120A |
Maximum AC Charge Current: | 120A |
Maximum Charge Current: | 120A | Physical |
Dimension (D X W X H): | 5.8" x 17.0" x 21.8" in |
Net Weight: | 40.6 lb |
Communication Interface: | USB/RS232/RS485/WiFi/Dry-contact | Operating Environment |
Humidity: | 5% to 95% Relative Humidity (Non-condensing) |
Operating Temperature: | -10C to 50C |
Storage Temperature: | -15C to 60C |
Compliance Safety: | UL | Alpha 5 Powerwall Lithium Iron Phosphate Battery |
Nominal Voltage: | 48V |
Nominal Capacity (at .5C, 77F): | 100Ah |
Minimum Capacity (at .5C, 77F): | 95Ah |
Expected Cycle Life: | >6000 cycles w/1C charge and discharge rate, at 77F, 80% DOD | Operating Specifications |
Charge Method: | Smart charger, constant current, constant voltage |
Operating Voltage: | 48 V |
Capacity: | 100 Ah |
Energy: | 5000 Watt Hours |
Charge Voltage Range (Max 52.5V): | 52.0 -52.5V |
Continuous Charge Current: | 50A |
Continuous Discharge Current: | 100A |
Over Voltage Shutdown: | 52.5 +/-0.2V |
Discharge Cut-off Voltage: | 42V =/- 0.5V |
Self Discharge (stored at 50% SOC): | < 3%/month | Temperature Performance |
Charge Temperature: | 32 F to 140 F |
Discharge Temperature: | -4 F to 140 F |
Storage Temperature: | -4 F to 140 F |
BMS High Temperature Cut-off: | 149F |
BMS Low Temperature Cut-off: | 32F | Physical Specifications |
Battery Dimensions: | 23 1/4" L x 14 7/8" W x 6 1/8" H |
Weight: | 100 lb |
Group Size: | 15 |
Battery post size: | 5/16" | Over Charge Protection |
Over charge detection voltage: | 3.9 +/- 0.05V |
Over charge detection delay time: | 0.96 - 1.4s |
Over charge release voltage: | 3.80 +/-0.05V |
Maximum charge voltage: | 3.65 +/-0.05V | Over Discharge Protection |
Over discharge detection voltage: | 2.0V +/- 0.05V |
Over discharge detection delay time: | 115-173ms |
Over discharge release voltage: | 2.3V +/- 0.10V |
Over Current Protection Over current detection delay time: | 9 +/- 2ms |
Over current release condition: | Cut load |
Polarity Reverse Protection: | Yes |
Short Circuit Protection: | Yes |
Warranty: | 10 Year Manufacturer Defect |
What's Included
What's Included:
• (1) 6500W 48V Hybrid Inverter (RS-H6548)
• (12) 335W Monocrystalline Panel (RS-M335)
• (4) 5.0kWh 48V Alpha 5 Lithium Battery (RS-B48100)
• (4) 10 AWG 25FT Extension Cable (RS-325102)
• (24) Z Brackets (RS-ZB4C)
• (1) PV DC Quick Disconnect Switch
• (1) 150A 48V Battery Breaker
• (2) 8 Stud Bus Bar Set
• (1) 2/0 Gauge 10ft red + 10ft black + 10 pcs lugs
• (1) 125 Amp 8-Space 16-Circuit Combiner Box
• (1) 12 Terminal Ground Bar Kit
• (8) 20 Amp Single-Pole Circuit Breaker
• (1) 25 Foot 6/3 SOOW Outdoor Durable Cable
• (1) 6500W 48V Hybrid Inverter (RS-H6548)
• (12) 335W Monocrystalline Panel (RS-M335)
• (4) 5.0kWh 48V Alpha 5 Lithium Battery (RS-B48100)
• (4) 10 AWG 25FT Extension Cable (RS-325102)
• (24) Z Brackets (RS-ZB4C)
• (1) PV DC Quick Disconnect Switch
• (1) 150A 48V Battery Breaker
• (2) 8 Stud Bus Bar Set
• (1) 2/0 Gauge 10ft red + 10ft black + 10 pcs lugs
• (1) 125 Amp 8-Space 16-Circuit Combiner Box
• (1) 12 Terminal Ground Bar Kit
• (8) 20 Amp Single-Pole Circuit Breaker
• (1) 25 Foot 6/3 SOOW Outdoor Durable Cable
RANDY SIMMONS
from Port Angeles, Wa 98363 asked:
April 17, 2023
Does this package come with mounting brackets for the solar panels to attach panels to the roof?
1 Answer
Yes, this package comes with 24 Z Brackets. Thank you for your inquiry!
Submitted by:
Earthtech Products
on April 18, 2023
Glenn C Maddox
from 75951 asked:
December 31, 2022
does it come with set up instructions?
1 Answer
The kit will come with a wiring diagram to assist with the installation. Thank you for you inquiry!
Submitted by:
Earthtech Products
on January 3, 2023