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
- Maximum charge voltage
- 14.4V maximum
- Communications bus
- CANBus / RS485
- How the cells are arranged
- 4S
- Highest charge current it will take
- 200A
- Maximum continuous discharge
- 250A
- Continuous output power
- 5120W
- Peak discharge
- 500A (Max 3 seconds)
- Series and parallel limit
- Up to (16) Parallel
- Working voltage range
- 12V – 14.4V
“Charging Voltage Range: 13.9V – 14V”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Max Charge Voltage: 14.4V”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Protection Rating: IP65 / NEMA 4X Communications: CANBus / RS485 Self-Heating: Yes”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Cell Configuration: 4S Max Continuous Discharge Current: 250A”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“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
“Max Continuous Discharge Current: 250A Max Continuous Power: 5120W”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
Unconfirmed
“Max Continuous Discharge Current: 250A Max Continuous Power: 5120W”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Max Discharge Peak Current: 500A (Max 3 seconds) Max Charge Current: 200A”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Max Connections: Up to (16) Parallel Protection Rating: IP65 / NEMA 4X”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“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
- Low-voltage cut-off they suggest
- 12V – 12.7V, suggested for your equipment
- Ingress protection
- IP65 / NEMA 4X
- Temperatures it may be charged in
- -4°F – 113°F (-20°C – 45°C)
- Temperatures it may be run in
- -4°F – 131°F (-20°C – 55°C)
“BMS Cutoff Range: 10.5V – 11.75V”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Suggested Low Voltage Cutoff: 12V – 12.7V”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“Protection Rating: IP65 / NEMA 4X Communications: CANBus / RS485”
Source: bigbattery.com/products/12v-husky-2-lifepo4-400ah-5-12kwh
“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
“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.
- Minn Kota Terrova 55 lb (54" shaft, wireless remote)Figures compared
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