EARLY BLACK FRIDAY SALE IS LIVE  |  SHOP NOW WITH OUR PRICE DROP GUARANTEE →
EARLY BLACK FRIDAY SALE IS LIVE  |  SHOP NOW →
Skip to content

AIMS Power Promethium Pro Solar Kit | 3960W Solar, 12000W 48V Inverter Charger, 21.2kWh LiFePO4 Battery

|
SKU: PCPROMETHIUM
$16,099.00

Early Black Friday Price Drop Guarantee

  • Buy now, and if our price drops by Black Friday, we'll refund the difference.
  • Found it lower elsewhere? We'll beat it.

We Beat Any Price

Found the same price or less? Just ask & we'll beat it.

Everything in the AIMS Power Promethium Pro Solar Kit laid out, from the twelve 330 watt panels to the two 48V lithium batteries and 12000 watt inverter charger

The AIMS Power Promethium Pro Solar Kit Delivers True 50 Amp Split-Phase Power From 3960 Watts of Solar, a 12000 Watt 48V Inverter Charger and 21.2 kWh of LiFePO4 Storage

The AIMS Power Promethium Pro Solar Kit is a complete 48 volt DC solar power system for large homes and properties. Twelve 330 watt monocrystalline panels feed a combiner box, a quick disconnect switch and an 80 amp charge controller, which charge two 48V lithium iron phosphate (LiFePO4) batteries for 21.2 kWh of storage. A 12000 watt, 100/50 amp low frequency inverter charger with an integrated transfer switch delivers 120/240V split-phase power.

AIMS designed the Promethium for do-it-yourself owners and installers who need high output off-grid power for whole properties, pumps, motors, HVAC systems and large appliances. It also suits advanced backup systems for sites where grid power is unstable.


AIMS Power Promethium Pro Solar Kit Features

A 12000 Watt Inverter Charger With True 50 Amp Service

The 12000 watt, 48V DC inverter charger provides consistent 120/240V split-phase output with true 50 amp service capability. AIMS designed it to handle demanding startup loads from motors, compressors and heavy duty equipment. It includes a transfer switch and 8 foot cables.

Controls and Connections Built Into the Inverter

The inverter charger has an LED status screen, circuit breakers, AC outlets and an AC hardwire terminal block, along with ports for auto generator start, a battery temperature sensor and an LCD remote. It measures 23.3 x 16.3 x 8.0 inches and weighs 154 lbs, so plan a sturdy mounting spot.

21.2 kWh of LiFePO4 Battery Storage

Two 48V LiFePO4 batteries, connected with the included jumpers, make up the 21.2 kWh bank. AIMS says the bank offers faster charging, improved efficiency, deeper usable capacity and extended cycle life compared with traditional battery technologies. Each battery has an on/off switch, state of charge lights, alarm and run lights, and CAN and RS485 communication ports.

3960 Watts of Monocrystalline Solar

Twelve 330 watt monocrystalline panels produce 3960 watts for steady battery replenishment and sustained off-grid operation. Each panel measures 65.35 x 39.25 x 1.37 inches and weighs 40 lbs, and the full array needs about 220 square feet.

An Efficient 48 Volt Design

The 48 volt DC configuration reduces current draw and supports more efficient inverter performance on a system of this scale. Combined with integrated transfer switching and matched components, it simplifies large off-grid installations.

A Combiner Box, Disconnect and Matched Fuses

The PV combiner box has six PV input pairs and comes with connectors. The quick disconnect switch, marked DC Disconnect PV Array, lets you isolate the array for servicing. The kit includes a 300A battery to inverter fuse and a 100A charge controller to battery fuse, and the 80 amp charge controller comes with 8 foot cables.


Real-World Applications

Whole-home backup. Back up 120V and 240V multi-zone heavy loads when the grid is down or unreliable.

Off-grid homes and homesteads. Supply complete off-grid living for residential homes, modern homesteads, tiny homes and container house communities.

Workshops and job sites. Run 240V machinery, welders and air compressors in off-grid workshops, or power construction jobsite trailers and remote basecamps.

Farms and ranches. Power agricultural well pumping and heavy farm equipment far from the grid.

Critical and hospitality sites. Support mobile medical units, disaster relief hubs and remote telecom sites, or glamping resorts and eco-lodges.


Practical Comparison

Promethium Split-Phase Inverter Versus a 120V-Only Inverter

A 120V-only inverter can't run equipment that needs 240V. The Promethium's 120/240V split-phase output with true 50 amp service covers standard household circuits and 240V pumps, motors and HVAC equipment from one inverter charger.

LiFePO4 Batteries Versus Traditional Batteries

Traditional lead-acid batteries are a familiar option, but AIMS chose LiFePO4 for the Promethium for faster charging, improved efficiency, deeper usable capacity and extended cycle life. Two batteries hold 21.2 kWh together.

48V System Versus a Lower Voltage System

A lower voltage system draws more current for the same power, which means heavier wiring and more losses. The Promethium's 48 volt design reduces current draw for its 12000 watt inverter charger and large battery bank.


Buyer Guidance

Size Your Loads to the Inverter and Battery Bank

List the equipment you plan to run at the same time, including motors and compressors that need extra power to start, and keep the total within the inverter charger's 12000 watt rating. The 21.2 kWh bank sets how much stored energy you have when the sun is down or the grid is out.

Plan for Space and Weight

The twelve panels need about 220 square feet, the inverter charger alone weighs 154 lbs, and the full kit weighs about 500 lbs. The kit includes 100 feet and 20 feet of PV wire plus 8 foot inverter and controller cables, so plan the equipment layout before installation.

This May Be A Good Fit If

  • You need true 50 amp 120/240V power
  • You run motors, compressors or HVAC
  • You want a 48V LiFePO4 battery bank
  • You have about 220 square feet for panels
  • Your grid power is unstable or absent

Common Questions

What Can the Promethium Power?

AIMS lists pumps, motors, large appliances, HVAC systems, 240V machinery, welders and air compressors among its uses. What you can run at once, and for how long, depends on your total load and the battery's charge.

Does the Inverter Charger Have a Transfer Switch?

Yes. The 12000 watt inverter charger has an integrated transfer switch for moving between incoming AC power and battery power.

What Batteries Come With the Kit?

You get two 48V lithium iron phosphate batteries with jumpers, for a 21.2 kWh bank.

Which Fuses Are Included?

The kit includes a 300A battery to inverter fuse and a 100A charge controller to battery fuse.


What's Included

  • 12 x 330 Watt Solar Panel
  • 1 x Combiner Box
  • 1 x 80 Amp Charge Controller With 8ft Cables
  • 2 x 48V Lithium Battery With Jumpers
  • 1 x Quick Disconnect Switch
  • 1 x Battery to Inverter Fuse 300A
  • 1 x Charge Controller to Battery Fuse 100A
  • 1 x Set of PV Wires 100Ft and 20Ft
  • 1 x 12000 Watt 100/50 Amp 120/240VAC 48V DC Inverter Charger With Transfer Switch and 8ft Cables

High Output Power for Large Properties

The AIMS Power Promethium Pro Solar Kit pairs 3960 watts of solar and 21.2 kWh of LiFePO4 storage with a 12000 watt split-phase inverter charger that offers true 50 amp service, all in one 48 volt system. If you'd like help sizing your loads or planning the install, the Outbound Power team is happy to help.


AIMS Power Promethium Pro Solar Kit | 3960W Solar, 12000W 48V Inverter Charger, 21.2kWh LiFePO4 Battery Specifications

Kit Contents
Solar Panels 12 x 330 Watt monocrystalline
Combiner Box 1
Charge Controller 1 x 80 Amp, with 8ft cables
Batteries 2 x 48V lithium, with jumpers
Battery Bank 21.2 kWh total
Inverter Charger 1 x 12000 Watt, 100/50 Amp, 120/240VAC, 48V DC, transfer switch, 8ft cables
Quick Disconnect Switch 1
Battery to Inverter Fuse 300A
Charge Controller to Battery Fuse 100A
PV Wires 100Ft and 20Ft
Mounting Space Needed About 220 sq ft
Kit Weight 500 lbs
Solar Panels
Model PV330MONO
Type Monocrystalline
Quantity 12
Rated Power (Each) 330 Watt
Total Solar Power 3960 Watt
Dimensions (Each) 65.35 x 39.25 x 1.37 in
Weight (Each) 40 lbs
Inverter Charger
Type LF (low frequency) inverter charger
Power Rating 12000 Watt
Amp Rating 100/50 Amp
DC Input 48V DC
AC Output 120/240VAC split phase
Service True 50 amp split phase
Transfer Switch Integrated
Display LED status screen
AC Connections AC outlets, AC hardwire terminal block, circuit breakers
Ports Auto generator start, battery temperature sensor, LCD remote
Cooling Intelligent cooling fans
Dimensions 23.3 x 16.3 x 8.0 in
Weight 154 lbs
Cables 8ft
Batteries
Chemistry Lithium iron phosphate (LiFePO4)
Quantity 2
Voltage (Each) 48V
Bank Energy 21.2 kWh
Connection Jumpers included
Controls and Indicators On/off switch, state of charge lights, alarm and run lights
Communication Ports CAN, RS485
Charge Controller
Rating 80 Amp
Cables 8ft
Cables and Hardware
Combiner Box PV combiner box, 6 PV input pairs, connectors included
Combiner Box Weight 35 lbs
Quick Disconnect Switch DC disconnect for PV array, rotary off and on handle
Disconnect Marking IP66NW
PV Wires 100Ft and 20Ft
Battery to Inverter Fuse 300A
Charge Controller to Battery Fuse 100A

Common Customer Questions

Get answers to the most frequently-asked questions customers ask before placing an order.

Is Outbound Power an Authorized Dealer?

Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.

How long will it take for my order to arrive?

Shipping times vary depending on your location and the product or products ordered.

Order Processing Time
Most products are processed within 1-3 business days. If there is a delay in processing your order, we will alert you with as much information as possible about what to expect.

After order processing is complete, you will receive tracking information to monitor your order while it is in transit.

Order Shipping Time
Following processing, it may take between 3 and 8 days to arrive, depending on your location.

Please refer to the product page for your item and reference the estimated delivery time frame for more details.

Additionally, you can see the estimated delivery time frame during checkout and receive a tracking number once your order ships.

What are your shipping rates? Do you offer free shipping?

Everything on our store ships for free. Really!

What is Outbound Power's return policy?

Most items may be returned within 30 days of delivery. Please refer to our Returns & Exchanges policy to determine what items are eligible. Returns are not accepted beyond 30 days following delivery.

Are Outbound Power products used/old/refurbished?

Everything sold on our website is brand-new.

Do you price match?

No — we price BEAT! Please refer to our Price Beat Promise for full details.