12V 120AH HEATED LITHIUM CRANKING BATTERY – NORSK LITHIUM
Power your marine adventures with the 12V 120AH Heated Lithium Cranking Battery from Norsk Lithium®. Expertly crafted to meet the high demands of modern marine applications, this advanced lithium cranking battery ensures you always have reliable power, no matter where your journey takes you. Whether navigating through open waters, facing challenging marine conditions, or enjoying a day of leisure fishing, this battery delivers consistent and dependable performance.
The 12V 120AH Heated Lithium Cranking Battery guarantees optimal functionality even in the coldest environments. The built-in Thermal Core Heating Technology™ ensures reliable charging in freezing temperatures, giving you confidence in any weather. With a substantial 120AH capacity, this battery provides ample power for various marine uses. The innovative Emergency Start Reserve [ESR] feature offers an additional layer of security, ensuring you have backup power in critical moments.
One of the key features of this battery is its Deep Sleep™ mode, which conserves energy during periods of inactivity and significantly extends battery life. The Deep Sleep™ mode 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. Additionally, the battery is equipped with triple terminals for easy rigging, simplifying the installation process and offering versatile connection options to suit various marine setups.
Constructed using top-quality materials and cutting-edge lithium technology, this battery is designed for longevity and durability. It boasts a much longer lifespan compared to traditional lead-acid batteries and is built to withstand the harsh conditions of marine environments. Enhance your marine power system with the 12V 120AH Heated Lithium Cranking Battery from Norsk Lithium®. Engineered for maximum reliability, durability, and convenience, it is the perfect choice for those seeking a powerful and dependable energy solution on the water. Stay powered and in control with Norsk Lithium®, ensuring your marine adventures are always fully charged.
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.
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 / Dual |
>100A |
X Not Allowed |
■ Parallel Connection 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 cell-level 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.
Dave Koonce –
This 12V 120AH Heated Lithium Cranking Battery has all the power to last all day and then some with the 12″ HB as well as the 9″ Bird i have in my boat. After a full day with both screens on full bright screen, livewells running I checked the battery status and i didn’t even loose one light bar.. I have fished longer days and have been caught with not enough power to fire up the 225 Pro XS and had to use alternate methods to get it to fire up. If this were to happen with the Norsk, the “ESR” Emergence Start Reserve will allow me to fire up the big motor and be on my way !! And one of the benefits is the 6 battery posts on top. 3 positive and 3 negative to clean that birds nest up real nice !!
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