MarCum® Lithium 12V 6AH LiFePO4 Impact Battery and 3amp Charger Kit


Get all the battery you need and none of the weight this winter with the MarCum Impact 12V6AH Lithium LiFeP04 battery.  At more than 60% lighter than even the lightest comparable sealed lead acid batteries, the MarCum Impact shaves serious pounds while improving run-times.  Even compared to other Lithium batteries, the LiFeP04 Impact hits a sweet spot of featherweight technology that does not sacrifice performance.  Spend more time fishing, and less energy lifting.  The MarCum Impact sports a form-factor that provides a direct replacement for any system previously equipped with a 12V7/8/9 AH sealed lead-acid battery.  Another advantage all MarCum Lithium LiFeP04 batteries offer is a significantly longer lifespan (2,000 full charge cycles), making them more affordable alternatives to other battery technology over their lifetimes.  The MarCum Impact is also equipped with a BMS circuit that protects the battery from overcharge, over dis-charge, and short circuiting.  The performance doesn’t stop there, as the MarCum Impact kit is equipped with a multi-stage charger for fast initial charge, reduced charge near full, and a maintain charge cycle to prevent overcharging.  The MarCum Impact kit comes complete with battery, 3 AH rapid charger, and fused charging cable.  As an angler, you rely on these power options to fuel your passion for the sport and can trust that all MarCum batteries are tested and certified to an international quality and safety standard.


  • Lithium LiFePO4 12V6AH battery and 3 AH rapid charger
  • Half the weight, twice the run-time
  • 1 lbs. 11 oz.
  • Complete Lithium Re-Power Kit – Direct replacement to all electronics operated by 12volt 7/8/9 AH hour SLA Sealed Lead Acid batteries
  • Same battery footprint – fits existing electronics and shuttles
  • LiFeP04 is the optimal lithium chemistry for cold-weather performance
  • On-board BMS Circuit for battery management protection
  • Offers 2,000 full charge cycles
  • Multi-stage charge types include fast, reduced-charge, and maintain cycles
  • Safety Tested and Certified to UL 62133 standards

In stock

Frequently Purchased Together
1 × 12v Universal USB Plug

In stock

SKU: 850013782482.


PHYSICAL DIMENSIONS  5-7/8″ x 2-1/2″ x 3-5/8″
WEIGHT  2 lbs. 11oz.


BATTERY TYPE Lithium Iron Phosphate (LiFePo4)
VOLTAGE 12.8 Vd.c.
TERMINALS Standard F2 Spade Terminals (6.4mm or 0.25” wide)
LIFECYCLES 2000 Full charge cycles
CHARGING TEMPERATURE 0°C to +45°C (Do not charge a frozen battery)
BMS PROTECTION Circuitry designed to prevent the battery from operating outside its safe operating levels. Includes: over-current & over-voltage protection, regulates operation during high & low temperatures, balanced charging, and short circuit protection.


BATTERY Rechargeable 12-volt 6-amp Lithium LiFePo4 Battery
CHARGER 3-amp Hour Rapid-Charge Battery Charger
WIRING HARNESS Wiring Harness with 5-amp Fuse Protection
BATTERY WARRANTY Warranted against manufacturer defects for 2,000 charge cycles to 80% full capacity with product registration.
CHARGER WARRANTY One Year Charging System Warranty


BMS Protection

Circuitry designed to prevent the battery from operating outside its safe operating levels. Includes: over-current & over-voltage protection, regulates operation during high & low temperatures, balanced charging, and short circuit protection.


  • Do not immerse the battery in water or sea water. Keep the battery in a cool dry place when not in use.
  • Do not use or leave the battery near a heat source (i.e. heater, furnace, fire).
  • Use the battery charger only as directed when recharging.
  • Do not reverse the positive and negative terminals on the battery connections.
  • Do not discard the battery in a fire, furnace, or other combustible space.
  • Do not connect the battery directly to an electrical outlet.
  • Do not short –circuit the battery by directly connecting the positive and negative terminals with metal objects.
  • Do not directly solder the battery or pierce the battery with a nail or other sharp objects.
  • If the battery gives off an odor, generates heat, becomes discolored or in any way appears abnormal during use, or while charging or discharging, immediately stop using it.
  • If the battery leaks and the battery contents (electrolyte) gets into an eye, do not rub the eye. Instead, flush the eye(s) with clean water and immediately seek medical attention or it may result in injury to the eye(s).
  • Do not use the battery in a location where static electricity or magnetic fields are great or it may result in damage to the battery safety devices.
  • Do not leave the battery in high temperatures (i.e. in direct sunlight or in a vehicle in extremely hot weather) or it may overheat, and its performance will be degraded, and service life decreased.
  • Tape the battery terminals prior to disposal to insulate them as discarded batteries may cause fire or explosion.
  • Operating Temperature: -20 Degrees to +60 Degrees Celsius
  • Follow manufacturers instructions.
  • Do not charge a frozen battery.
  • Charging Temperature: 0°C to +45°C.


Lithium Repower Comparison Chart 2021
Comparison Chart of MarCum Lithium Batteries and Run-times for common ice fishing sonar systems.