7.5AH Lithium Ion Battery

(5 customer reviews)

From: $79.99

Best On The Market For Cutting Pounds.

This Ultra-Lightweight 7.5AH Lithium battery is the best on the market for cutting pounds while still offering up to 36 hour run time on mechanical flashers. This little powerhouse is the same dimensions as a standard flasher battery but weighs in at only 1.4 lbs. 1000+ charge cycles, 2-year limited warranty!


In stock


We know what you need to get the most out of your ice-fishing electronics and maximize your day on the ice: Power.  Reliability.  Light-weight efficiency. 

The Norsk 7.5Ah lithium battery delivers.  This little powerhouse pummels the competition.  On its watch, mechanical flashers thrive with up to 36 hours of runtime.    

And that, without any degradation.  The first 10% of our lithium battery’s discharge will be just as potent as the last 10% – for the entire life of the lithium battery. 

Weighing in at merely 1.4lbs, Norsk’s 7.5Ah lithium battery is three times lighter than a lead-acid battery equivalent.  With Norsk powering your passion, you can be mobile on the ice.  

When your flasher tells you the best bites are waiting across the lake, you don’t want to be stuck hauling acid across the frozen water.  You need to pack up and move.  Quickly.   

The Norsk Lithium 7.5 Ah battery’s compact size (5.94 X 2.56 X 3.66 In) is expertly designed to be the perfect drop-in replacement to upgrade your ice-fishing electronics to give you the performance you deserve.  


Norsk Lithium batteries are engineered by outdoor fishing enthusiasts.  We make the best lithium batteries – because we want the best technology to power our passion.  

We don’t have time or money to waste on cheap, unreliable, ancient batteries.  Not when there are fish to be caught and memories to be made!

The Norsk 7.5Ah lithium battery will run for more than 1,000 charge cycles and comes with a two-year limited warranty.  


Protect your battery and prolong its life with the Norsk Lithium Battery Monitoring System!

The Norsk 7.5Ah lithium battery comes equipped with a BMS.  

Norsk Lithium Batteries aren’t afraid of freezing temperatures.  They can handle as much – and often more – cold weather better than you.  However, they can’t charge in the cold.

The Norsk 7.5Ah Lithium Battery comes equipped with a BMS system to ensure your battery won’t be damaged if you attempt to charge it incorrectly.  

The BMS won’t allow the battery to receive a charge until its internal temperature has warmed to a safe 32F.  Once it’s safe, the BMS will allow the lithium battery to recharge, and you’ll be on your way!

Our advanced BMS technology also prevents your Norsk 7.5Ah lithium battery from overcharging.  When your lithium battery is fully recharged, the BMS will prevent it from receiving even a micro charge.  

Even if you completely hook up your lithium battery charger to the wrong terminals, the BMS will prevent it from receiving any charge.    

The BMS ensures cell balancing during discharge and charge cycles, low and high voltage cutoff, short circuit protection, and high-temperature protection. 

The Norsk 7.5Ah lithium battery BMS ensures your lithium battery is fool-proofed! 


Just because cavemen caught fish doesn’t mean you must fish like a caveman.  

The Norsk 7.5Ah Lithium battery’s patten-pending, dual USB ports allow you to enjoy the outdoors in the 21st century. 

These allow you to power your cell phone, go-pro, or nearly any USB-compatible device while your lithium battery powers your fish finder.  


With the enormous runtime provided by the Norsk 7.5Ah lithium battery, you’d be forgiven if you thought it would never run out of juice!

But like any energy source, it will.  With the LED power indicator, you can know when.  Just press the button, and the LED Power indicator will let you know how much power your lithium battery has left. 


Lithium-ion chemistry is the best choice for maximizing your ice-fishing experience.  Many lithium batteries will use LiFePO4 in their ice-fishing applications.  

We also use LiFePO4.  It’s excellent.  But it has a slight weight problem.  

Lithium-ion chemistry provides exceptional power while also offering a significant weight advantage.  Lithium-ion batteries have one of the highest energy densities of any battery technology currently available.  

The Norsk 7.5Ah lithium battery is remarkably potent – and so light – you’ll barely notice it when you charge across the ice to the best spot for feeding time! 


Requires 2A 12.6V Battery charger – not included 

NOT Compatible with other chargers! 


Bait Aerators – keep your bait kicking so you can catch that trophy! 

USB LED lights – light up your shanty and keep track of all your gear! 

The chart below shows estimated runtimes based on manufacturer specified power draws, available from their respective websites and/or publications. While NORSK has tested and verified the models listed in the summary chart, most models listed below are calculated.

How long does 7.5 Ah battery last?


Brand Model Draw 7.5AH 15AH
Humminbird Ice 35 0.21A 36 hrs 72hrs
Humminbird Ice 45 0.25A 30 hrs 60hrs
Humminbird Ice 55 0.30A 25 hrs 50hrs
Humminbird Piranha MAX 4/4DI 0.18A 42 hrs 84hrs
Humminbird Helix 5   (ALL Models) 0.65A 13 hrs 26hrs
Humminbird Helix 7   (ALL Models) 0.80A 9 hrs 18hrs
Humminbird Helix 8   (ALL Models) 1.00A 8 hrs 16hrs
Humminbird Helix 12 (ALL Models) 1.75A 4 hrs 8hrs
Humminbird Solix 10 (ALL Models) 2.40A 3 hrs 6hrs
Humminbird Solix 12 (ALL Models) 2.88A 3 hrs 6hrs
Humminbird Solix 15 (ALL Models) 4.56A 2 hrs 4hrs
Garmin Striker 1.00A 8 hrs 16hrs
Garmin Striker Plus 1.50A 5 hrs 10hrs
Garmin echoMAP 50s/dv 2.25A 3 hrs 6hrs
Garmin echoMAP 70s/dv 2.25A 3 hrs 6hrs
Garmin EchoMAP CHIRP 4x 0.41A 18 hrs 36hrs
Garmin EchoMAP CHIRP 5x 0.59A 13 hrs 26hrs
Garmin EchoMAP CHIRP 6x 1.41A 5 hrs 10hrs
Garmin EchoMAP CHIRP 7x 1.67A 4 hrs 8hrs
Garmin ECHOMAP Plus 4x 0.41A 18 hrs 36hrs
Garmin ECHOMAP Plus 6x 1.00A 8 hrs 16hrs
Garmin ECHOMAP Plus 7x 1.25A 6 hrs 12hrs
Garmin ECHOMAP Plus 9x 1.50A 5 hrs 10hrs
Garmin ECHOMAP Ultra 10x 2.16A 3 hrs 6hrs
Garmin ECHOMAP Ultra 12x 2.16A 3 hrs 6hrs
Garmin ECHOMAP UHD 6x 1.00A 8 hrs 16hrs
Garmin ECHOMAP UHD 7x 1.25A 6 hrs 12hrs
Garmin ECHOMAP UHD 9x 1.50A 5 hrs 10hrs
Garmin Livescope GLS10 4.83A 2 hrs 4hrs
Marcum M1 0.23A 33 hrs 66hrs
Marcum M3 0.20A 38 hrs 76hrs
Marcum M5 0.28A 27 hrs 54hrs
Marcum LX-6s 0.37A 20 hrs 40hrs
Marcum LX-7 0.55A 14 hrs 28hrs
Marcum LX-9 0.78A 10 hrs 20hrs
Marcum MX-7gps 0.33A 23 hrs 46hrs
Marcum VS485c 0.38A 20 hrs 40hrs
Marcum Mission SD 0.30A 25 hrs 50hrs
Marcum Quest HD 0.88A 9 hrs 18hrs
Lowrance Hook 5 0.90A 8 hrs 16hrs
Lowrance Hook 7 1.25A 6 hrs 12hrs
Lowrance Hook 9 1.50A 5 hrs 10hrs
Lowrance Elite-7Ti2 0.90A 8 hrs 16hrs
Lowrance Elite-9Ti2 0.90A 8 hrs 16hrs
Lowrance Elite-12Ti2 1.90A 4 hrs 8hrs
Lowrance HDS-7 1.70A 4 hrs 8hrs
Lowrance HDS-9 2.00A 4 hrs 8hrs
Lowrance HDS-12 2.30A 3 hrs 6hrs
Lowrance HDS-16 3.00A 3 hrs 6hrs
Vexilar FL-8SE 0.25A 30 hrs 60hrs
Vexilar FLX-12 0.24A 31 hrs 62hrs
Vexilar FL-18 0.20A 38 hrs 76hrs
Vexilar FLX-20 0.22A 34 hrs 68hrs
Vexilar FLX-28 0.26A 29 hrs 58hrs
Vexilar FLX-30BB 0.30A 25 hrs 50hrs
Aqua Vu 715c 0.70A 11 hrs 22hrs
Aqua Vu HD7i Gen2 1.00A 8 hrs 16hrs
Aqua Vu HD7i Pro Gen2 1.20A 6 hrs 12hrs
Aqua Vu HD10i Gen2 1.50A 5 hrs 10hrs
Aqua Vu HD10i Pro Gen2 1.50A 5 hrs 10hrs
Battery Type Lithium Ion
Rated Capacity 7.5AH
Working Voltage 8.4V – 12.6V
Size 5.94 x 2.56 x 3.66 In
Weight 1.4 lbs
Added Features Battery Status Indicator & Dual USB Ports

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