The AIMS Power 5.04kWh LiFePO4 Extender Battery Adds 5040Wh of Stored Energy to Your AIO-5KWH4KW Portable Solar Generator
The AIMS Power 5.04kWh LiFePO4 Extender Battery is an expansion battery made only for the AIMS Power AIO-5KWH4KW Portable Solar Generator. It holds 5040Wh of rated energy at 51.2 Vdc in LiFePO4 prismatic cells, the same rated capacity as the generator's own battery, so you can run tools, appliances and essential equipment longer between charges.
It's for AIO-5KWH4KW owners who power job sites, emergency backup or off-grid setups and want more runtime without changing the core system. AIMS states the optional battery is compatible with the AIO-5KWH4KW only, so it isn't a match for the AIO-3KWH3600 or other models.
AIMS Power 5.04kWh LiFePO4 Extender Battery Features
5040Wh of LiFePO4 Storage
The extender uses LiFePO4 prismatic cells with a rated capacity of 5040Wh and a rated voltage of 51.2 Vdc. AIMS chose this chemistry for stable performance, improved safety and long cycle life compared with traditional battery chemistries, and it needs no routine battery maintenance.
Rated for 3500+ Cycles
AIMS lists a cycle life of 3500+ cycles for the extender battery, giving you dependable long-term energy storage for job sites and backup systems.
Connects to the Generator's Extended Power Pack Connector
The AIO-5KWH4KW has an extended power pack connector for this battery. You connect the two with the product-specific battery pack cable. The extender has two extra battery ports, and AIMS lists the port input at 48Vdc, 5040W max and the port output at 45 to 54Vdc, 5040W max.
Wheels, Handles and a Charge Display
The case has wheels at one end and handles along the top, so you can roll it into place next to the generator. The front has a power button and a display that shows the charge level. It measures 25.2 x 12 x 17.2 inches and weighs 97 lbs.
Made for the AIO-5KWH4KW Only
AIMS designed this battery specifically for the AIO-5KWH4KW portable solar generator, so the extender and generator are matched. Its modular design lets you expand storage without redesigning your core power setup.
Real-World Applications
Job sites. Keep drills, grinders, lights and battery chargers running longer on a remote work site.
Emergency backup. Stretch your generator's stored energy for essential equipment during an outage.
Off-grid power. Add storage for appliances and tools where there's no grid connection.
Mobile and portable setups. Roll the generator and extender to where the work is and run both from one system.
Practical Comparison
Extender Battery Versus a Second Solar Generator
The extender adds stored energy to the generator you already own. AC output, charging inputs and controls stay on the AIO-5KWH4KW, which AIMS rates at 4000W continuous and 7000W peak. You get more runtime without a second set of outlets and inputs to manage.
LiFePO4 Extender Versus a Lead-Acid Battery
Compared with traditional battery chemistries such as lead-acid, the extender's LiFePO4 prismatic cells offer stable performance and long cycle life with no routine maintenance.
Buyer Guidance
Connecting the Extender
Turn off both the generator and the battery pack before you connect them. Use the product-specific battery pack cable, then check that the generator's LCD shows input power before using it. Don't connect or remove the battery pack while it's charging or discharging, and don't touch the metal terminals in the connection port. If debris gets on them, wipe lightly with a dry cloth.
Size Your Loads to the Generator
Adding an extender increases stored energy, not output power. Keep the total load under the AIO-5KWH4KW's rated power and check each appliance's wattage first. AIMS's estimates include about 700W for a drill, 700 to 1000W for a refrigerator, 1000 to 1200W for a microwave and 1600W for a 15,000 BTU AC unit.
This May Be A Good Fit If
- You own an AIMS Power AIO-5KWH4KW generator
- You need more runtime for tools or backup loads
- You want to expand without a second generator
- You'll use it between 0°C and 40°C (32°F and 104°F)
Common Questions
Will It Work With the AIO-3KWH3600?
No. AIMS states the optional battery is compatible with the AIO-5KWH4KW only.
How Much Usable Energy Does It Add?
The rated capacity is 5040Wh. Like any battery system, actual output is lower than rated capacity because of efficiency losses, which AIMS puts at typically about 10% depending on load type, ambient temperature and other conditions.
What Temperatures Can It Work In?
AIMS lists a working temperature of 0°C to 40°C (32°F to 104°F), with 20°C to 30°C as the optimal range.
Can I Connect It While the Generator Is On?
No. Turn off the generator and the battery pack first. If you need to connect or remove the battery pack during use, AIMS says to turn off the power before you do.
What's Included
- 1 x AIMS Power 5.04kWh LiFePO4 Extender Battery
More Runtime for Your AIO-5KWH4KW
The AIMS Power 5.04kWh LiFePO4 Extender Battery adds 5040Wh of LiFePO4 storage to the AIO-5KWH4KW Portable Solar Generator in a rolling case built for job sites and backup power. If you'd like help planning your loads or setting up the connection, the Outbound Power team is happy to help.
AIMS Power 51.2V 5.04kWh LiFePO4 Extender Battery for AIO-5KWH4KW Portable Solar Generator Specifications
|
| Electrical |
| Rated Capacity |
5040Wh (5.04kWh) |
| Rated Voltage |
51.2 Vdc |
| Battery Type |
LiFePO4 prismatic |
| Cycle Life |
3500+ cycles |
| Efficiency Loss |
Typically about 10%, varies with load and temperature |
| Charge and Discharge |
| Extra Battery Port Input |
48Vdc, 5040W max |
| Extra Battery Port Output |
45~54Vdc, 5040W max |
| Extra Battery Ports |
2 |
| Connection |
Product-specific battery pack cable to the AIO's extended power pack connector |
| Temperature |
| Working Temperature |
0°C to 40°C (32°F to 104°F) |
| Optimal Temperature |
20°C to 30°C |
| Compatibility |
| Compatible Generator |
AIMS Power AIO-5KWH4KW only |
| Generator Output (AIO-5KWH4KW) |
4000W continuous, 7000W peak, 100~120Vac |
| Physical |
| Dimensions |
25.2 x 12 x 17.2 in |
| Net Weight |
97 lbs |
| Front Panel |
Power button and charge level display |
| Mobility |
Wheels and top handles |
AIMS Power 51.2V 5.04kWh LiFePO4 Extender Battery for AIO-5KWH4KW Portable Solar Generator Manual