Designed to provide 15+ hours of runtime on the most common sonar units with screens up to 7″. This little powerhouse is the same dimensions as a standard flasher battery (5.94 X 2.56 X 3.66 In) but weighs only 2.6 lbs. 1000+ charge cycles, 2-year limited warranty!

Charger not included

BATTERY MONITORING SYSTEM (BMS)

The Norsk 15Ah Lithium Battery comes equipped with a BMS system that makes it fool-proofed and worry-free.  

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 prevents your Norsk 15Ah lithium ion battery from overcharging.  

Even if you completely hook up your lithium-ion 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. 

DUAL USB PORTS

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

The Norsk 15Ah 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.