Name: 12V 120AH Heated Lithium Cranking Battery - Norsk Lithium - Norsk Lithium
Brand: Norsk Lithium
SKU: 850042818701
Price: 999.99 USD
Availability: InStock
Rating: 5.00 (2 reviews)

12V 120AH HEATED LITHIUM CRANKING BATTERY - NORSK LITHIUM

FULL DESCRIPTION

Power your marine adventures with the 12V 120Ah Heated Lithium Cranking Battery from Norsk Lithium®. Expertly crafted to meet the demands of modern marine applications, this advanced lithium cranking battery delivers reliable power wherever your journey takes you.

Whether you’re navigating open waters, facing challenging marine conditions, or enjoying a day of fishing, this battery provides consistent, dependable performance when you need it most.

Designed for cold-weather reliability, the 12V 120Ah Heated Lithium Cranking Battery features Thermal Core Heating Technology™ to support charging in freezing temperatures. This built-in heating system helps maintain dependable performance in harsh conditions, giving you confidence in any weather.

With a substantial 120Ah capacity, this lithium cranking battery provides ample power for a wide range of marine applications. The innovative Emergency Start Reserve [ESR] feature adds an extra layer of security by giving you access to backup power in critical moments.

Deep Sleep™ mode helps conserve energy during periods of inactivity and significantly extends battery life. This feature can be easily managed and reactivated through the Norsk Guardian® App, allowing you to monitor battery status, control Deep Sleep™, and access Emergency Start Reserve from your smartphone.

Equipped with triple terminals, this lithium cranking battery makes rigging simple and flexible. The added connection options help streamline installation and support a variety of marine power setups.

Constructed with premium materials and advanced lithium technology, this battery is built for long-lasting durability. Compared to traditional lead-acid batteries, it offers a significantly longer lifespan and is designed to withstand harsh marine environments.

Enhance your marine power system with the 12V 120Ah Heated Lithium Cranking Battery from Norsk Lithium®. Engineered for reliability, durability, and convenience, it’s a powerful and dependable lithium cranking battery for life on the water.

Stay powered and in control with Norsk Lithium® – and make sure every marine adventure is fully charged.

PRODUCT VIDEO

CORE SPECIFICATIONS

Battery Type	Lithium Iron Phosphate (LiFePO4)
Product Model	B12120GHS
Product Name	12V 120Ah LiFePO4 Guardian Heated Starting Battery
Cell Configuration	4S8P
Nominal Capacity	120Ah
Nominal Voltage	12.8V
Weight	Approx. 16 kg / 35.3 lb
Dimensions	Group 31 - 13 x 6.81 x 9.25 in. / 330 x 173 x 235 mm

EMERGENCY START RESERVE

Never be stranded on the water again due to a dead starting battery! All Norsk Lithium® Starting batteries offer an Emergency Start Reserve that allocates 25% of the battery’s capacity as a reserve available on demand so you’ll always have the power you need to start your outboard motor at the end of a long day on the water. ESR can be activated with the push of the Power Management button on the battery or via the Norsk Guardian® App.

DEEP SLEEP™

Disconnect power to your battery’s terminals using this feature in the Norsk Guardian® app to eliminate fully-discharged batteries caused by phantom draw – storing your battery has never been easier!

THERMAL CORE HEATING TECHNOLOGY

Our proprietary Thermal Core Heating Technology™ checks the temperature of the cells inside the battery and reroutes the inbound current from the charger to warm the cells if the cell temperature is below 32F. / 0C. Once the internal cell temperature has been increased to a safe charging temperature, the current from the charger is routed to the cells so a safe charge can take place. With the addition of full potting with thermally conductive epoxy, custom heat pads, and our proprietary heating control algorithm, NOBODY does heated batteries better!

BCI-COMPLIANT CASES

Norsk Lithium 12V Deep Cycle batteries are constructed in BCI-compliant cases, ensuring they fit in the same space as a Group 31 lead-acid or AGM battery. This eliminates the need for an oversized proprietary battery tray.

TRIPLE SETS OF TERMINALS FOR FLEXIBLE RIGGING

All Norsk Lithium® Starting batteries offer 3-sets of terminals and the needed terminal hardware (M8 posts & M8 bolts) to make quick and organized work of the most complicated boat rigging jobs.

ONE-TOUCH POWER MANAGEMENT

The Power Management button, found on all Norsk Lithium® marine batteries, allows the user to quickly check State of Charge, and manage advanced features such as ESR and Deep Sleep™ or reset the BMS.

IP67 WATERPROOF

IP67 Waterproof ensures that your Norsk Lithium® Marine Battery is fully protected against dust ingress and capable of withstanding immersion in water up to 1 meter deep for 30 minutes. This high level of protection guarantees that your battery remains operational in the harshest marine environments, providing reliable performance and durability.

NORSK GUARDIAN APP INTEGRATION

Seamlessly manage your battery’s performance with the Norsk Guardian® App. Monitor battery status, control the Deep Sleep™ mode, and access Emergency Start Reserve [ESR] with ease, all from the convenience of your smartphone.

THE NORSK ADVANTAGE

Our batteries stem from the dedication of outdoor enthusiasts relentlessly pursuing advanced rechargeable lithium technology to power their passions. Recognizing the urgency of a robust power source, the Norsk 120AH HEATED Lithium Cranking Battery is designed to endure over 4,000 charge cycles, backed by an exceptional warranty. Enjoy a standard 10-year warranty, plus an additional 2 years when you register your battery through the Norsk Guardian® App, ensuring enduring performance. Whether you’re braving the cold on a fishing trip or embarking on an off-grid adventure, you can trust Norsk Lithium to deliver reliable power when you need it most.

CORE SPECIFICATIONS

Battery Type	Lithium Iron Phosphate (LiFePO4)
Product Model	B12120GHS
Product Name	12V 120Ah LiFePO4 Guardian Heated Starting Battery
Cell Configuration	4S8P
Nominal Capacity	120Ah
Nominal Voltage	12.8V
Weight	Approx. 16 kg / 35.3 lb
Dimensions	Group 31 – 13 x 6.81 x 9.25 in. / 330 x 173 x 235 mm

CHARGING & DISCHARGING

Standard Charging Voltage	14.2V ± 0.2V
Maximum Charge Voltage	15.4V ± 0.2V
Standard Charge Current	60A
Peak Charge Acceptance Rate	120A at 20°C to 45°C
Maximum Continuous Discharge Current	120A at 10°C to 60°C
Peak Discharge Current	800A for 8 seconds (-7°C to 55°C)
Discharge Cutoff Voltage	8.8V from -20°C to 0°C 10.0V from 0°C to 60°C
Operating Voltage Range	8.8V-15.4V from -20°C to 0°C 10.0V-15.4V from 0°C to 60°C

TEMPERATURE RATINGS

Charging Temperature Range	-20°C to 55°C
Discharging Temperature Range	-20°C to 60°C
Storage Temperature	Up to 7 days: -20°C to 60°C Up to 3 months: -20°C to 40°C Up to 1 year: -20°C to 25°C
Storage Humidity	≤ 85%

SMART FEATURES & PROTECTION

Emergency Starter Reserve	Reserves 25% of battery capacity for starting support when ESR mode is activated.
Battery Indicator	LED state-of-charge display: 25%, 50%, 75%, 100%
Power Management Button	Quick press: Check state of charge / disable Deep Sleep Long press, 2 lights: Access Emergency Starter Reserve Long press, 3 lights: Enable Deep Sleep Long press, 4 lights: Reset BMS
BMS Protection	Overcharge Over-Discharge Overcurrent Short Circuit High Temp Shutoff Low Temp Shutoff Deep Sleep™ Bluetooth Communication Thermal Core Heating Technology™
Short Circuit Protection	1200A nominal protection current with automatic recovery after protection delay.

CYCLE LIFE & CERTIFICATIONS

Cycle Life	4,000+ cycles at ≥70% state of health
Certifications	FCC, CE, RoHS, UN38.3, MSDS

Marine Product Manual – English

Marine Product Manual – French

ALTERNATOR COMPATIBILITY GUIDE

Alternator Gross Output	Approx. Net to Battery*	120Ah Starting Battery	180Ah Starting Battery
<70A	<55A	✓ Acceptable	✓ Acceptable
85A	60-70A	■Parallel Connection Reqd.	✓ Acceptable
100-115A	70-85A	X Not Allowed	✓ Acceptable
150A	75-95A	X Not Allowed	■Verify ≤90A
>150A	>100A	X Not Allowed	■Parallel Connection Reqd.

Alternator Gross / Net*	120Ah Starting Battery	180Ah Starting Battery
<70A Approx. Net <55A	✓ Acceptable	✓ Acceptable
85A Approx. Net 60-70A	■ Parallel Reqd.	✓ Acceptable
100-115A Approx. Net 70-85A	X Not Allowed	✓ Acceptable
150A Approx. Net 75-95A	X Not Allowed	■ Verify ≤90A
>150A Approx. Net >100A	X Not Allowed	■ Parallel Reqd.

*Approximate net current to battery may vary by alternator, wiring, regulator behavior, and installation conditions.

■ Parallel Connection Required

Parallel connection is required in certain alternator applications. Using batteries in parallel distributes charging current, helping protect the battery and BMS from overcurrent and overheating.

Note: Mercury and other OEMs may require an isolator or ACR. These devices do not limit current; they only manage battery bank connection.

Maximum Charge Acceptance

Published recommended maximum charge current:
120Ah Starting Battery: ≤60A
180Ah Starting Battery: ≤90A

Peak charge acceptance:
120Ah Starting Battery: 120A at 20°C to 45°C
180Ah Starting Battery: 180A at 20°C to 45°C

Net Current = Alternator Output – Engine Draw – Vessel Loads
Always size using worst-case conditions: low SOC, high RPM, and minimal loads.