NUEPower™ Sealed Batteries

NUEPower™ Sealed Batteries: Powering Marine, Off-Grid & Business Back-up Power

Tired of being tethered to the grid? The NUEPower Sealed Batteries series is your key to reliable, independent power. Engineered with cutting-edge lithium-ion technology, these batteries deliver dependable energy storage for your home, cabin, or remote site. Imagine powering your essential appliances, lights, and even more demanding equipment with a consistent and long-lasting energy source, day and night. Invest in NUEPower Sealed Batteries for true energy independence. Enjoy the peace of mind that comes with a robust and safe power резерв, ready to handle power outages or complete off-grid living. With their long lifespan, high efficiency, and minimal maintenance, NUEPower batteries are a smart and sustainable choice for powering your life, your way. Cut the cord and embrace energy autonomy with NUEPower.

NUEPower™ Sealed Batteries

NUEPower 48V 100Ah with Battery Heating
$1,350.00
NUEPower™ 12V 400Ah Battery
$1,550.00
NUEPower™ 36V 100Ah
$1,000.00
NUEPower™ 24V 200Ah
$1,550.00
NUEPower™ 12V 100Ah UL Listed
$690.00
NUEPower 48V 100Ah with Battery Heating
$1,350.00
NUEPower™ 12V 400Ah Battery
$1,550.00
NUEPower™ 36V 100Ah
$1,000.00
NUEPower™ 24V 200Ah
$1,550.00
NUEPower™ 12V 100Ah UL Listed
$690.00

NUEPower™ Sealed Batteries · New Use Energy

Sealed LiFePO4 batteries for off-grid, marine & backup power.

12V, 24V, 36V and 48V lithium iron phosphate batteries with up to 5,120Wh each. A drop-in upgrade from lead-acid for cabins, boats, telecom sites and solar systems.

Shop batteries →Upgrade from lead-acid
5,120WhPer battery, up to
6,000+Cycles at 80% depth of discharge
95%+Charge efficiency
IP67Sealed ABS case

Shop · NUEPower™

LiFePO4 sealed batteries

Professional-grade lithium iron phosphate cells, a Battery Management System for protection, and Bluetooth monitoring on most models.

HeatedNUEPower 48V 100Ah heated LiFePO4 battery

NUEPower™ 48V 100Ah Heated

5,120Wh · self-heating, operates to −20°C · 6,000 cycles

$1,350

24VNUEPower 24V 200Ah LiFePO4 battery

NUEPower™ 24V 200Ah

5,120Wh · Bluetooth BMS · waterproof ABS case

$1,550

36VNUEPower 36V 100Ah LiFePO4 battery

NUEPower™ 36V 100Ah

3,840Wh · Bluetooth BMS · waterproof ABS case

$1,000

Out of stockNUEPower 12V 400Ah LiFePO4 battery

NUEPower™ 12V 400Ah

5,120Wh · Bluetooth BMS · waterproof ABS case

$1,550

Out of stockNUEPower 12V 100Ah UL Listed LiFePO4 battery

NUEPower™ 12V 100Ah UL Listed

1,280Wh · UL Listed · rugged ABS case

$690

Compare NUEPower™ batteries side by side
BatteryVoltageCapacityEnergyStand-out featurePrice
48V 100Ah Heated48V100Ah5,120WhSelf-heating for cold climates$1,350
24V 200Ah24V200Ah5,120WhBluetooth BMS$1,550
36V 100Ah36V100Ah3,840WhBluetooth BMS$1,000
12V 400Ah12V400Ah5,120WhBluetooth BMS$1,550
12V 100Ah UL12V100Ah1,280WhUL Listed$690
Two NUEPower 24V 200Ah LiFePO4 batteries installed in a customer's off-grid system
NUEPower™ 24V 200Ah batteries installed by a customer in Phoenix, Arizona.

Upgrade from lead-acid

The drop-in retrofit for off-grid systems.

  • Same footprint. Fits a standard Group 8D space and built-in L16 battery boxes. About 90 lb per 5kWh battery.
  • More of your solar, stored. Over 95% charge efficiency, versus up to 20% lost charging lead-acid.
  • No complex setup. Program it like a lead-acid battery. Tested with OutBack Power, Schneider Electric, MidNite Solar and Sol-Ark inverters.
  • Real power. 100A continuous (5kW) with a 250A surge on 5kWh models, for high-demand appliances.

“Got the battery installed and everything looks good. Will be heading out this weekend for a few weeks.”

John in Phoenix · NUEPower™ 24V 200Ah

Applications

One battery line, four jobs

Off-grid cabin powered by solar and LiFePO4 battery storage

Off-grid homes & cabins

Solar storage that runs lights, appliances and well pumps day and night.

Boat on a lake with lithium house bank battery

Marine

House banks and small electric propulsion. Sealed against moisture and salt.

Server room with LiFePO4 battery backup

Telecom & business backup

LiFePO4 is the global standard for safe stationary storage.

Snow-covered cabin using heated lithium batteries

Cold climates

The heated 48V keeps its cells at 1–5°C so it can charge and discharge in the cold.

Sizing guide

Which battery voltage do I need?

Match the battery to your inverter or system voltage. Higher voltage moves the same power with less current and thinner cable.

12VRVs, vans, small boats and 12V DC systems24VLarger vans, boats and mid-size off-grid systems36V36V equipment, trolling motors and utility vehicles48VHome solar and off-grid inverter systems

Runtime (hours) ≈ battery Wh × 0.9 ÷ load W  ·  5,120Wh running a 500W load ≈ 9 hours

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36V, 48V and 72V lithium packages with chargers

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ChargerNUEPower 48V 17A lithium battery charger

NUEPower™ chargers

36V, 48V and 72V chargers with LCD screen

from $329

PortableSunCase 3651 portable power station

Need it portable? SunCase™

Battery, inverter and solar charger in one hard case

from $890

Answers

LiFePO4 batteries, explained.

What is a LiFePO4 battery?
LiFePO4 (lithium iron phosphate) is a lithium battery chemistry known for safety, thermal stability and long life. It's the global standard for home solar storage. NUEPower™ LiFePO4 batteries deliver 6,000+ cycles at 80% depth of discharge, with a Battery Management System that protects against over- and under-voltage and heat.
Is LiFePO4 better than lead-acid?
For most off-grid, marine and backup systems, yes. LiFePO4 charges at over 95% efficiency versus up to 20% losses for lead-acid, weighs as much as 60% less, holds a steadier voltage, and lasts thousands more cycles. NUEPower™ 5kWh batteries fit Group 8D and L16 battery spaces as a drop-in upgrade.
How long will a 5kWh battery run my equipment?
Runtime (hours) ≈ battery watt-hours × 0.9 ÷ load watts. A 5,120Wh NUEPower™ battery running a 500W load lasts about 9 hours; a 100W load, about 46 hours. Use the power planning tool for your exact loads.
Which voltage battery should I choose: 12V, 24V, 36V or 48V?
Match your inverter or system voltage. 12V suits RVs, vans and small boats. 24V suits larger vans, boats and mid-size systems. 36V suits 36V equipment and utility vehicles. 48V is the standard for home solar and off-grid inverters, and moves the most power with the least current.
Can lithium batteries work in freezing temperatures?
Standard lithium batteries struggle to charge below freezing. The NUEPower™ 48V 100Ah Heated has built-in insulation and self-powered heaters that keep its cells between 1°C and 5°C, so it operates down to −20°C.
Which inverters are NUEPower™ batteries compatible with?
NUEPower™ batteries have been tested with major off-grid, transformer-based inverter systems including OutBack Power, Schneider Electric, MidNite Solar and Sol-Ark. They program like a standard lead-acid battery, with no complex communications setup.
Do you offer installation?
Yes. Email sales@newuseenergy.com or call +1 (844) 941-3476 for installation services. Our support team includes licensed installers and people from leading inverter companies.

Spec your battery bank.

Talk to our team about the right batteries for your system — from a single 12V house battery to a 15kWh+ off-grid bank that drops into your existing lead-acid setup.

Talk to a power specialist
Call+1 (844) 941-3476→Emailsales@newuseenergy.com→PlanPower planning tool→