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BigBattery HUSKY 2 12V 400Ah (INV)

SKU FHSKY-12051-G2-INV

BigBattery
BigBattery's product page

The BigBattery HUSKY 2 12V 400Ah (INV) is a battery pack with a continuous discharge of 250 A, a peak of 500 A and an ingress rating of IP65 / NEMA 4X.

Last updated: 16 September 2026

Battery and charging

Charging voltage range
13.9V – 14V, as the maker suggests

Charging Voltage Range: 13.9V – 14V

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Maximum charge voltage
14.4V maximum

Max Charge Voltage: 14.4V

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Communications bus
CANBus / RS485

Protection Rating: IP65 / NEMA 4X Communications: CANBus / RS485 Self-Heating: Yes

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

How the cells are arranged
4S

Cell Configuration: 4S Max Continuous Discharge Current: 250A

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Highest charge current it will take
200A

Max Charge Current: 200A Charge Temperature Range: -4°F – 113°F (-20°C – 45°C)

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Maximum continuous discharge
250A

Max Continuous Discharge Current: 250A Max Continuous Power: 5120W

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Continuous output power
5120W

Unconfirmed

Max Continuous Discharge Current: 250A Max Continuous Power: 5120W

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Peak discharge
500A (Max 3 seconds)

Max Discharge Peak Current: 500A (Max 3 seconds) Max Charge Current: 200A

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Series and parallel limit
Up to (16) Parallel

Max Connections: Up to (16) Parallel Protection Rating: IP65 / NEMA 4X

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Working voltage range
12V – 14.4V

Operating Voltage Range: 12V – 14.4V

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Battery care and safety

Where its BMS cuts off
10.5V – 11.75V, where the pack's own protection acts

BMS Cutoff Range: 10.5V – 11.75V

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Low-voltage cut-off they suggest
12V – 12.7V, suggested for your equipment

Suggested Low Voltage Cutoff: 12V – 12.7V

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Ingress protection
IP65 / NEMA 4X

Protection Rating: IP65 / NEMA 4X Communications: CANBus / RS485

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Temperatures it may be charged in
-4°F – 113°F (-20°C – 45°C)

Charge Temperature Range: -4°F – 113°F (-20°C – 45°C) Discharge Temperature Range: -4°F – 131°F (-20°C – 55°C)

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

Temperatures it may be run in
-4°F – 131°F (-20°C – 55°C)

Discharge Temperature Range: -4°F – 131°F (-20°C – 55°C) Optimal Discharge Temperature Range: 59°F – 95°F (15°C – 35°C)

Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

United States — CPSC

We did not match this product to any recall in the data we hold from CPSC, last checked September 19, 2026. Check CPSC’s own search: cpsc.gov/Recalls

United States — NHTSA & Coast Guard

We did not match this product to any recall in the data we hold from NHTSA or the US Coast Guard, which we hold records from but do not yet check on a schedule. Check NHTSA’s own search: nhtsa.gov/recalls

European Union

We did not match this product to any recall in the data we hold from the European Union, last checked September 19, 2026. Check the European Union’s own search: ec.europa.eu/safety-gate-alerts/screen/search

United Kingdom

We did not match this product to any recall in the data we hold from the United Kingdom, last checked September 19, 2026. Check the United Kingdom’s own search: gov.uk/product-safety-alerts-reports-recalls

Australia

We did not match this product to any recall in the data we hold from Australia, last checked September 14, 2026. Check Australia’s own search: productsafety.gov.au/recalls

Canada

We did not match this product to any recall in the data we hold from Canada, last checked September 19, 2026. Check Canada’s own search: recalls-rappels.canada.ca/en/search

France

We did not match this product to any recall in the data we hold from France, last checked September 19, 2026. Check France’s own search: rappel.conso.gouv.fr

None of these is a statement that the product is safe or unrecalled — only that our searches found nothing. Each regulator’s own search is linked above.

Devices documented to run on this

The figures below line up. Neither manufacturer states that this pack runs this device — that is our reading of what each of them published separately, not a claim by either of them or a test by us. Even where every stated figure agrees, these can still decide it:

  • A motor’s published draw is usually a peak, not the load it holds — the two numbers are not the same kind of quantity
  • A maker’s amp-hour minimum and their reserve-capacity minimum can give different answers about the same battery
  • Conditions attached to the chemistry, such as a speed limit for running on lithium
  • Whether the pack may be wired in series at all, where the device needs 24 or 36 volts
  • The charger, which both makers put conditions on and neither supplies
  • Case size, hold-down and terminal type — fitting the space is not being secured in it

Worth confirming with the manufacturer or a dealer before buying.

  • One of these, on its own, at 12 V.

    Only at 12 volts, and on published figures — neither maker has named the other and nobody has tested this pairing — check yours before buying.

    The motor's maker asks for at least a 105 amp-hour rating. This pack is rated 400 Ah. Minn Kota attach a condition to the chemistry that no comparison of figures can settle: "speeds higher than 85% for a prolonged period could cause permanent damage to the motor".

Compatible platforms

The motors this pack is documented to run are listed above. No boat, rig or other platform in this catalogue is listed as carrying it — that is a separate question from what it will power, and nothing is listed until a source answers it.

Sources

  • BigBattery — HUSKY 2 12V 400Ah (INV)MANUFACTURER BATTERY PAGE

    BigBattery

    Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh

    Verified September 15, 2026