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BigBattery|12V SEAL- LiFePO4 - 228Ah - 3.0kWh

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Price: $1,290.00 USD
Regular price
List Price: $1,990.00 USD
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Price: $1,290.00 USD
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BigBattery|12V SEAL- LiFePO4 - 228Ah - 3.0kWh

MARINE GRADE! BigBattery’s 12V 3kWh LiFePO4 SEAL battery is our first marine grade lithium solution for your boats and marine applications.

The SEAL is a heavy-duty marine battery designed to handle even the toughest waters. The SEAL is equipped with a watertight double seal, both rubber and foam, and is constructed with 316 grade stainless steel, one of the most corrosion resistant stainless steels available, so whether you’re on the pond or in the ocean, the SEAL is prepared. Plus, the SEAL comes with an extendable LED voltmeter so you can install your display right there in your boat’s dashboard.

On top of all these features, the SEAL comes with everything you can expect from a BigBattery battery, including brand new LFP cells, a 300A Fuse, and our advanced BMS with Over/Under Voltage Protection, Over Current Protection, and a Thermal Management System that affords safe charging and discharging within a wide temperature range. When it comes to your marine applications, you need a battery you can rely on. Upgrade to the SEAL and get 3kWh of watertight, non-corrosive power!

Why Upgrade Your RV from Lead Acid to BigBattery?

BigBattery: Lasts 10+ Years with Zero Maintenance. (3,000-4,000/Cycles)
Lead-Acid: Lasts 2-3 Years with Annual Maintenance Required. (500-1000/Cycles)
BigBattery: Weighs ⅓ the weight @ 47/LBS for 2.17kWh of Capacity.
Lead-Acid: Battery Bank adds 700+lbs to your RV, lowering fuel efficiency.
BigBattery: Provides 2-3x More Power to more easily run heavy applications.
Lead-Acid: Relies on your generator using fuel to power heavy applications.
BigBattery: Charges 3x Faster through “Continuous Charge”.
Lead-Acid: Charges slower requiring wave charging.
BigBattery: Requires 1/3rd the space, providing extra storage capacity.
Lead-Acid: Requires 3x more space eliminating valuable storage for your tools and toys.
BigBattery: Includes Smart Safety Features in every pack. (BMS/FUSE/THERMAL)
Lead-Acid: Zero safety built in. Exposed leads & terminals. Requires additional fuses.

Check BigBattery|12V SEAL- LiFePO4 - 228Ah - 3.0kWh Complete Kits

Designed For 12V Applications

  • Tech Specs

    Single 12V SEAL- LiFePO4 - 228Ah - 3.0kWh Battery Specs

    SKU: ASEAL-12030-G1
    System Voltage: 12V
    Nominal Voltage: 12.8V
    Chemistry: LiFePO4
    Charging Voltage Range: 13.9 - 14.5V
    Max Charge Voltage: 14.7V
    Operating Voltage Range: 9.8 - 14.6V
    kWh Capacity: 3kWh
    Ah Capacity: 228Ah
    Cell Configuration: 4S
    Max Continuous Discharge Current: 175A
    Max Continuous Power: 2240W
    Max Discharge Peak Current: 350A (6 Seconds)
    Max Charge Current: 175A
    Charge Temperature Range: 0°C (32°F) / 55°C (131°F)
    Discharge Temperature Range: -30°C (-22°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: 50 lb (22.7 kg)
    Depth: 9.5 in (24.1 cm)
    Width: 7.5 in (19.1 cm)
    Height: 13 in (33 cm)
    Safety Features: Fuse (300A) & Battery Management System
    (Over/Under Voltage, Over Current, &
    Over/Under Temperature Protections)
    Max Connections: Up To (8) Parallel

    Aims 2000 Watt Pure Sine Inverter Charger with Transfer Switch Specs

    Battery Voltage: 12VDC


    Continuous Output Power: 2000W
    Surge Rating: 6000W (20 sec.)
    Output Waveform: Pure Sine Wave
    Output Waveform (Bypass Mode): Same as Input
    Output Frequency (Auto-Detecting): 50/60Hz (±0.3Hz)
    Nominal Efficiency (Peak): >88%
    Line Mode Efficiency: >95%
    Transfer Time: 10ms (Max.)
    Total Harmonic Distortion: <10% DC
    Ambient Operating Temperature: -10ºC (14ºF) - 50ºC (122ºF)


    Nominal Input Voltage: 12VDC
    Minimum Start Voltage: 10VDC
    High Battery Voltage Alarm: 16VDC
    Low Battery Voltage Alarm: 10.5 - 11VDC
    Low Battery Voltage Trip: 10 - 10.5VDC
    Low Battery Voltage Restart: 13.3VDC
    Idle Consumption: 28W
    Idle Consumption (Power Saver Mode): 12.7W


    Output Voltage: Adjustable
    Charge Rate: 70A
    Over Charge Protection Shutdown: 15.7V


    Weight: 41 lbs
    Depth: 16.5 in
    Width: 8.75 in
    Height: 7.1 in

    12V 110V AC 60A Lithium Charger (14.6V DC) Specs

    Safely and reliably charge your 12V batteries with this high-tech charger from BigBattery. With an easy Anderson-style connection for your battery, and a 110VAC cable for plugging directly into any standard wall outlet, you’ll be plugging in, charging up, and getting back to business in no time. Plus, with a compact, portable form factor, this charger ensures you always have power when and where you need it.

    SKU: PWS015
    Voltage: 12V
    Input Voltage: 110V AC
    Max. Output Voltage: 14.6
    Max. Output Current: 60A
    Output Frequency: 50/60Hz
    Connection Type: 175A Anderson


    Weight: 3.4 lbs
    Depth: 8 in
    Width: 5.2 in
    Height: 2.75 in
    DC Cable Length: 22.3 in
    AC Cable Length: 23.2 in

    Specs Sheet

    BigBattery|12V SEAL- LiFePO4 - 228Ah - 3.0kWh

    Inverter Datasheet Download


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    Customer Reviews

    Be the first to write a review

    BigBattery lithium-ion RV battery packs have a track record of being exceptionally reliable while guaranteeing a worry-free experience. Our advanced lithium RV & Van-life solutions reduce generator time and minimize charging periods. We also offer our RV batteries with inverters, so you have a one-stop shop for compatible accessories.

    • 300%


    • 4X 


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    • 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?