Keep your important ice fishing electronics charged up and ready to go with the Norsk 7.5Ah Lithium Ion Battery. Lightweight yet incredibly powerful, the last 10% charge out of this Norsk Battery will be just as potent as the first 10%, all thanks to the rechargeable lithium ion technology. Weighing in at just over a pound, it delivers all the power at three times lighter weight than a typical lead acid battery...and never any concerns about hauling acid around. Plus, the Battery Monitoring System will protect your battery for all of its 1,000+ charge cycles, ensuring it's always at the right temp for charging, and protecting it against overcharging and short circuits. Offers up to 36 hours of runtime for mechanical flashers Lightweight at just 1.4 lbs. Battery Monitoring System protects battery against cold charging, overcharging, low and high-voltage cutoff and short circuit protection Over 1,000 charge cycles Dual USB ports Battery-power indicator 7.5Ah Requires a 12.6V charger (not included) 2-year limited warranty Order today!