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BigBattery| 48V KONG ELITE MAX-LiFePO4(From 372Ah-19.0kWh To 744Ah-38kWh)+6K Inverter Kits

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Price: $7,990.00 USD
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BigBattery|48V KONG ELITE MAX-LiFePO4(From 372Ah-19.0kWh To 744Ah-38kWh)+6K Inverter Kits

MAXIMUM CAPACITY! BigBattery’s 48V 19kWh LiFePO4 KONG Elite Max battery is the largest-capacity unit we offer and if you’re looking to build a massive solar or off-grid power system, the KONG Elite Max has everything you need.

The 48V Off-Grid Home Elite Max System was designed to completely power all your electronics and heavy duty home appliances in a 4-6 bedroom home. This system can be used as a large-scale emergency power backup or a fully off-grid wind/solar home power system for larger homes. This is a powerhouse of a system, utilizing the newest inverter and battery technology at the best price in the USA! The 48V/19kWh KONG Elite Max Battery comes with a built-in color LCD Smart Display and new LFP cells guaranteed to last you 10-15 Years (depending on your usage). This battery is calibrated to the 6,000-Wh Growatt Inverter pumping enough AC power to keep everything in your home running smoothly. This complete system comes with all components and parts required to install on your house within a day! The 48V Off-Grid Home MAX System is compatible to work with all AC, wind, solar, generator power and/or any redundancy combination you require. This system connects to shore power so your battery will automatically charge when connected. The included low-frequency inverter eliminates power spikes within your home, allowing all your electronics in your home to last longer. This kit includes the safest LFP battery technology with our Built-In Triple-Safety Redundancy features. This system requires ZERO Maintenance and lasts 300% longer than lead-acid off-grid systems, and all battery packs come with a 10 Year Warranty!

What"s included:

Option#1 - 48V KONG ELITE MAX KIT - LiFePO4 - 372Ah - 19.0kWh

48V KONG LIFEPO4 233AH 12KWH Front View1 × 48V KONG ELITE MAX - LiFePO4 - 372Ah - 19.0kWh
1 × Growatt 6K Inverter
1 × GROWATT-ShineWiFi-F

Option#2 -  48V 2X KONG ELITE MAX 6K INVERTER KIT-LiFePO4-744Ah-38kWh

48V KONG LIFEPO4 233AH 12KWH Front View2 × 48V KONG ELITE MAX - LiFePO4 - 372Ah - 19.0kWh
1 × Growatt 6K Inverter
1 × Parallel Busbar
2 × 4AWG 4FT BB350 to Ring Terminal Cable
1 × GROWATT-ShineWiFi-F

Designed For 48V Applications

  • Massive Power Systems
  • Lead Acid Replacement
  • Intense Heat and Cold
  • Emergency Power
  • Off-Grid Power
  • Solar Systems
  • Mobile Power
  • Data Servers
  • Robotics
Tech Specs

Single 48V KONG ELITE MAX - LiFePO4 - 372Ah - 19.0kWh Specs

SKU: AKONG-48190-G1
System Voltage: 48V
Nominal Voltage: 51.2V
Chemistry: LiFePO4
kWh Capacity: 19kWh
Ah Capacity: 372Ah
Charging Voltage Range: 55.6 - 58.0V
Max Charge Voltage: 58.8V
Operating Voltage Range: 47.2 – 58.8V
Suggested Low Voltage Cutoff: 47.2 – 50.8V
BMS Cutoff Range: 42 – 47V
Cell Configuration: 16S 2P
Max Continuous Discharge Current: 150A
Max Continuous Power: 7500W
Max Discharge Peak Current: 350A (6 Seconds)
Max Charge Current: 90A
Charge Temperature Range: 0°C (32°F) / 55°C (131°F)
Discharge Temperature Range: -20°C (-4°F) / 55°C (131°F)
Optimal Discharge Temperature Range: 15°C (59°F) / 35°C (95°F)
Storage Temperature Range: -5°C (23°F) / 35°C (95°F) (Max 6 Months)
Weight: 600 lb (272.2 kg)
Depth: 15 in (38.1 cm)
Width: 25.5 in (64.8 cm)
Height: 46.5 in (118.1 cm)
Safety Features: Fuse (300A) & Battery Management System
(Over/Under Voltage, Over Current, &
Over/Under Temperature Protections)
Max Connections: Up To (8) Parallel


Growatt 6K Inverter Specs

Battery Voltage: 48VDC


Rated Power: 6000W
Surge Power: 18000W
Nominal Output Voltage RMS: 104-110-115-120VAC or 208-220-230-240VAC (optional)
Output Frequency: 50/60Hz (±0.5Hz)
Waveform: Pure Sine Wave
Waveform (Bypass Mode): Same as Input
Inverter Efficiency (Peak): 88%
Transfer Time: 10ms


Voltage: 240VAC
Selectable Voltage Range: 184~272VAC (UPS); 154~272VAC (APL)
Frequency Range (Auto-Sensing): 50/60Hz
Max. Charging Current: 60A


Max. PV Array Power: 5000W
Max. PV Charge Current: 80A
Max. PV Array Open Circuit Voltage: 250V
Max. Efficiency: 97%
No. of Independent MPP Trackers / Strings per MPP Tracker: 1/1
MPPT Range at Operating Voltage: 60~245VDC


Weight: 114.6 lbs
Depth: 8.6 in
Width: 14.2 in
Height: 21.3 in


Operating Temperature: 0ºC (32ºF) - 50ºC (122ºF)
Altitude: <6,562 ft
Protection Rating: IP20

BigBattery| 48V KONG ELITE MAX-LiFePO4-372Ah-19.0kWh Manual

BigBattery|48V KONG ELITE MAX-LiFePO4-372Ah-19.0kWh Specs Sheet


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Customer Reviews

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MAXIMUM CAPACITY! BigBattery’s 48V 19kWh LiFePO4 KONG Elite Max battery is the largest-capacity unit we offer and if you’re looking to build a massive solar or off-grid power system, the KONG Elite Max has everything you need. The KONG Elite Max comes equipped with our advanced BMS, which affords it a wide temperature operating range for all you winter warriors, brand new LiFePO4 cells, and sturdy, caster wheels so you can store your KONG Elite Max wherever you need. With more BMS protections than any battery in its class, you’ll be staying powered, and staying safe through it all. Plus, this unit includes an LED Smart Display so you can always monitor your battery’s health and status. Set your home up with a massive power system with the KONG Elite Max today!

  • 300%


  • 4X 


  •  1/3


  • 100%



Can your batteries be used in series?

We no longer offer our batteries for use in series.

Do your batteries have a thermal management system?

All of our batteries have a thermal management system that is controlled by the BMS (Battery Management System). This Thermal management system will not only prevent the battery from being used if the temperature is too high, but also if the temperature is also too low.

Can I use my OEM charger?

No. Lead acid battery chargers charge at different currents and voltages than our lithium batteries. Using your OEM charger can damage your battery cells and void your battery’s 10 year warranty. We have several chargers optimized for and calibrated to every battery we sell.

Why does the voltage drop when unplugging the charger?

The voltage drop that you experienced is called the “bubble voltage” and is perfectly normal for Lithium Batteries. LiFePO4 batteries behave differently than other battery chemistries. The Voltage vs Capacity is not linear. For example, if you have a voltage between (13.3 - 14.6) or (26.6 - 29.2) or (53.6 - 58.4)  you will have more than 99% of the capacity. This essentially means that “Bubble Voltage” contains less than 1% of the entire capacity and the drop when a load is placed is instant.

Can I leave my batteries outside?

No. Our batteries are not marine rated or weather proof, so leaving them out under the sun all day or in the rain can damage the batteries. (This type of damage is not covered under the 10 year warranty.

How many years will my battery last?

Lithium Iron Phosphate (LifePO4) batteries can be cycled from 3000 to 7000 times. If you cycle the battery daily with an 80% DoD (Depth of Discharge), then you can get even more than 10 years of use from your battery.

Is BigBattery compatible with all Inverters and Charger Controllers?

Our batteries work great with almost all inverter/charger controller brands. The only brand we are not compatible with is RENOGY. Please confirm that your inverter can be set to the operating parameters of the battery you’re interested in before purchasing. Parameters can be found as a downloadable PDF spec sheet on every battery product page.

How do I install my battery?

All of our batteries come with free ring terminals that can be used to connect your battery to your inverter, cart, or busbar system. We also sell a parallel busbar that can be used in tandem with the included ring terminals to parallel multiple batteries.

What is the difference between the 12 A and the Upgraded Charger?

Upgraded Charger:

  • Charging Current: 15A
  • Input Voltage: 110V / 220V
  • Output Voltage: 58.8v
  • Charging Time: 5 h (approx)
  • On-Board Charger: Yes
  • Protection: IP65

Does Big Battery sell used/surplus batteries?

In the past Big Battery sold refurbished batteries, such as solar batteries made from recertified Nissan Leaf modules. As of the year 2020, all batteries sold are new, never-previously-cycled batteries that come with a complimentary 10 year warranty.

How long before my order ships?

It can take anywhere from a week to no more than two weeks for shipment. This time allows us to assemble, test, and inspect each battery prior to shipping.

Why does shipment take so long?

We build every battery upon order, so shipment may take anywhere from a week to no more than two weeks.This is to allow us to assemble, test, and inspect every unit prior to shipment.

What does your 10 year warranty cover?


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