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The RUiXU Lithi2-20 is a 51.2V, 392Ah lithium iron phosphate battery that stores 20kWh in a single floor-standing cabinet. It is the larger sibling of the RUiXU Lithi2-16, with about 25% more energy in one unit, and RUiXU builds it with new Grade A cells.
It is made for homeowners and light commercial users who pair a 48V battery with a hybrid or off-grid inverter for backup power, solar storage or off-grid living. An IP55 enclosure, built-in self-heating, Bluetooth app monitoring and an internal aerosol fire suppression module come standard.
One Lithi2-20 holds 20kWh at 51.2V. Fewer units mean fewer cables, fewer connections and less floor space than a bank of smaller modules.
RUiXU rates the enclosure IP55 for protection against dust and water jets and designs the Lithi2-20 for indoor and outdoor installation. That gives you more choices for placement, such as a garage or a sheltered spot outside the house.
The built-in heater turns on during charging when the battery is at 41°F (5°C) or below, so the cells can accept a charge in cold weather. RUiXU's data sheet lists a charge and discharge range of -22°F to 140°F (-30°C to 60°C).
An aerosol fire suppression module inside the pack adds protection for the wiring and cells. The battery management system watches every cell, a miniature circuit breaker protects the positive terminal, and RUiXU adds a fuse on the negative terminal.
Tool-free quick-connect terminals are rated for 200A continuous current. The RUiXU app connects over Bluetooth to show battery information and install over-the-air firmware updates, and CAN and RS485 ports handle communication with compatible inverters.
RUiXU supports up to 32 Lithi2-20 batteries in parallel, from 20kWh up to 640kWh, for larger homes and light commercial sites. Passive cell balancing at 150mA helps keep the cells evenly matched after charging.
RUiXU rates the Lithi2-20 for 9,500 or more cycles at 80% depth of discharge with a 15-year design life, and the battery carries a 10-year warranty from RUiXU.
Whole-Home and Critical-Load Backup. Paired with a compatible hybrid inverter, the Lithi2-20 keeps lights, the refrigerator, internet and other important circuits running through a grid outage.
Solar Self-Consumption. Store daytime solar production for the evening, or charge when utility rates are low and use stored energy when rates are high.
Off-Grid Homes and Cabins. With an off-grid inverter and solar array, one or more Lithi2-20 batteries become the main energy store for a property with no utility service.
Light Commercial Storage. RUiXU designed the Lithi2-20 for light commercial use too, and its parallel capacity lets a shop, farm or office grow storage as needs change.
Both are 51.2V lithium iron phosphate battery systems from RUiXU. The Lithi2-20 stores 20kWh (392Ah) against the Lithi2-16's 16kWh (314Ah), so a 40kWh system takes two Lithi2-20 batteries instead of three Lithi2-16 units.
A rack bank built from 5kWh or 6kWh modules lets you add capacity in small steps, but it needs a rack or cabinet and more cabling. The Lithi2-20 puts 20kWh in one floor-standing enclosure, which keeps the installation simpler.
A lead-acid bank needs venting and regular care, loses capacity when it is discharged deeply and wears out after far fewer cycles. A LiFePO4 battery like the Lithi2-20 needs no watering, communicates with the inverter and keeps a steady voltage through most of its charge.
Add up the kilowatt-hours your loads use over the outage or overnight period you want to cover, then divide by 20kWh to estimate how many batteries you need. Check that your inverter supports a 48V lithium battery with CAN or RS485 communication and that its battery current suits your bank.
The Lithi2-20 weighs 330.69 lb (150 kg) and stands 35.98 inches tall with wheels, so plan its route and final spot before delivery. A qualified installer should handle the wiring and commissioning, and any connection to your home's electrical panel should be done by a licensed electrician under local codes and permits.
Yes. RUiXU rates the enclosure IP55 and designs the Lithi2-20 for indoor and outdoor installation. Follow the installation clearances and local code requirements for your site.
RUiXU supports up to 32 Lithi2-20 batteries in parallel, for up to 640kWh of storage.
RUiXU's data sheet lists CE, CEC, SGIP, IEC 62619, IEC 61000 and UN 38.3, and lists UL 1973, UL 9540A and UL 9540 as pending. Check with your local authority if your installation requires a specific listing.
RUiXU backs the Lithi2-20 with a 10-year warranty.
The RUiXU Lithi2-20 Lithium Battery System gives you 20kWh of LiFePO4 storage in one IP55 cabinet, with self-heating, fire suppression and room to grow to 640kWh. If you need help sizing a battery system or matching it to your inverter, the Outbound Power team is ready to help.
RUiXU Lithi2-20 51.2V 392Ah Lithium Battery System Specifications |
|
|---|---|
| Battery | |
| Model | Lithi2-20 |
| Nominal Voltage | 51.2V |
| Nominal Capacity | 392Ah |
| Nominal Energy | 20kWh |
| Cell Type | Lithium iron phosphate (LiFePO4), 16S1P |
| Cycle Life | 9,500+ cycles at 80% DoD |
| Design Life | 15 years |
| Electrical | |
| Operating Voltage Range | 44.8V to 58.4V |
| Charge Voltage | 56.5V |
| Float Voltage | 54.6V |
| Charge Current | 150A recommended, 200A max |
| Discharge Current | 150A recommended, 200A max |
| Peak Discharge Current | 240A for 15 s, 300A for 1 s |
| Terminals | Quick-connect, 200A continuous |
| Protection | BMS, miniature circuit breaker (positive), fuse (negative) |
| Cell Balancing | 150mA passive |
| Communication and Control | |
| Communication | RS485, CAN, Bluetooth |
| App | RUiXU app (monitoring, OTA firmware updates) |
| Emergency Power Off | EPO input (Link-IN port) |
| Expansion | Up to 32 batteries in parallel (640kWh) |
| Environment | |
| Operating Temperature | -22°F to 140°F (-30°C to 60°C), charge and discharge |
| Self-Heating | Turns on during charging at 41°F (5°C) or below |
| Storage Temperature | 14°F to 113°F (-10°C to 45°C) |
| IP Rating | IP55 (indoor or outdoor) |
| Fire Suppression | Internal aerosol module |
| Size and Weight | |
| Dimensions (H x W x D) | 35.98 x 21.65 x 9.84 in (914 x 550 x 250 mm), height with wheels |
| Net Weight | 330.69 lb (150 kg) |
| Certifications and Warranty | |
| Certifications | CE, CEC, SGIP, IEC 62619, IEC 61000, UN 38.3, SATS 5398 |
| UL Listings | UL 1973, UL 9540A, UL 9540 (pending) |
| Warranty | 10 years |
I must say, I have never experienced such awesome customer service with this company. Jam my sales rep was awesome and answered all my questions. She also was able to ship my power station and it was delivered early by two days. Again, the service was the best to any other company I have dealt with. Thank you Bill for your commit to customer service with your employees. Ralph
I’m so happy I found this site! Outbound Power has so many great products and I was really excited to see the price. I’ve been waiting for Amazon prime days to buy something, a very expensive item, but I happen to see it on this site and I snatched it right up and saved over $500!!! a delivery was quick and actually a day earlier than what they thought it would be.
I can honestly say Outboundpower Company exceeds their mission statement. The word that defines this organization is "Outstanding". The the Quality of products they sell is Outstanding. Their recent price matching is Outstanding by exceeding my expectations and truly customer focused. They really make a difference; a refreshing find these days. Their customers are definitely the most important part and purpose of their work.
In closing, I seldom offer reviews even when asked. However, I was motivated to expend the time and effort to recommend OutBoundPower without reservation; because they truly earned my respect. R. Kaiser
I have purchased over $20,000 of solar equipment from Outbound Power over several purchases. They have the best pricing and the best hands-on customer service. I always shop other sites but always end up back at Outbound Power. They are awesome!
I wanted to leave a new review, as support reached out to me and clarified some things I was unclear about. This thing is amazing! It seamlessly switches over to backup power without me noticing, and makes being inconvenienced by power outages a thing of the past. I originally purchased it for just backup power, but I'm finding that I can really offset energy costs by attaching solar panels pretty easily, and building up my solar grid at my own pace.
Support confirmed that the unit can handle 50A when connected to the grid, accommodating a maximum of two F3800s at the same 50A when the power is out. That drops to 25A if you only have one F3800.
Support also took my feedback to enhance the app capabilities, and provide more visibility into the individual component's utilizations. I've been very impressed by their level of support, and am excited to see the improvements they continue to make.
I originally purchased this thinking I would just connect a manual transfer switch via the 30A plug and use it as a backup generator. However, once I discovered the Home Power Panel, and its ability to seamlessly switch over to backup power automatically, I was sold! It was easy to use and easy to install. I can confirm that it supports 6000W at 25A. It is a beast!! I am excited to buy a second one in the future, and it has already been amazing maintaining power when the grid goes down.
I am excited to see some improvements in the app though. It is a bit basic. I would like to see things like detailed monitoring of the different circuits, historical monitoring data, and the ability to configure alerts (like a circuit is consuming more power than you expect it to). Otherwise, it is pretty great!
Outbound Power's seamless ordering and rapid shipping has kept me a customer for many years. I have bought 5 different ECOFLOW products and always have been pleased with Outbounds customer service. Thanks Bill
The portable fridge came in about 5 days and was even cheaper than the manufacturers sale price. An employee even called me to make sure that I was satisfied with the product which doesn’t ever happen. As soon as I got it I unboxed it and immediately put it into use. It took about 25 minutes for the unit to get to 30 degrees when I had it set to its lowest setting. I went shopping and 30 minutes later it was at -4f. Even once I filled it up with some frozen and some slightly cool food items it got up to about 15f and dropped back down to -4f within about 60 minutes. Beats the heck out of ice for sure.
As for the company they went above and beyond to earn my future business. I thought something was missing from the box, so I sent an email and they responded within minutes, fortunately it was my mistake and I overlooked a part of the packaging and found the item. So I sent another email saying it was my fault and I had found the item. I really appreciate the service you all provide.
You can’t go wrong with Outbound Power and Anker. Just got my Extension Battery, as well I just order a 400w Anker Solar Panel, now I wil have total of 1000w to charge these two units
Hight Recommend Outbound and Anker Products top Quality.
Thank you Bill for the Great Service.
Just wanted to let you know that the Anker Solix F3800 plus, with an expansion battery, and the generator cable arrived promptly and in excellent condition. I want to mention that your company does the right thing, even though the customer may not know it. When I ordered the equipment, I did not know that there was a promotion for a free solar panel based on the amount of the order. I was happily surprised when the free solar panel was delivered.
Rest assured that I will recommend your company as it has the best prices around, and because it does the right thing for it's customers.
Thank you!
This website, its owner/employees, and products, came highly recommended . After careful researching, I purchased the Ankers 2600 and their 400W solar panels.
From the moment I pressed the enter key and completed the transaction, the clock was ticking. THIRTY, count ‘em! Thirty hours later, Fed Ex was delivering my purchase. Everything was of the highest quality packaging.
Definition of Customer Service?
When you EXCEED A CUSTOMERS EXPECTATION!
Bill, Emanuel, Ankers & Fed Ex exceeded WAY BEYOND my expectations!!!!!
What are YOU waiting for?!
I have now ordered over $6000 of solar components from Outbound Power and the customer support and interaction is second to none. Highly communicative, helpful, and speedy delivery’s have all added to several great experiences. Not to mention their prices beat everyone in the solar market. I’m still setting up my equipment but once it’s completed, I’ll provide a review on the Ecoflow products a well!
Good pricing. Good reputation. Fast service dealing with a real person if needed. Service availability after the sale.
The price was right and the delivery was fast. I can hardly wait till this item is on sale again, need a couple more. Thanks
The river 3 plus is a great power station. I’m very happy so far. It does what I want it to do. I like the app. It’s quiet. It’s very nice looking too.
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