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BigBattery HUSKY 2 12V 400Ah

SKU FHSKY-12051-G2

BigBattery
BigBattery's product page

The BigBattery HUSKY 2 12V 400Ah is a battery pack with a continuous discharge of 300 A, a peak of 350 A, 3840W of output and an ingress rating of IP65.

Last updated: 21 September 2026

Battery and charging

Charging voltage range
13.9V to 14.4V

Charging Voltage Range 27.8V - 28V 13.9V - 14.4V

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Maximum charge voltage
14.6V

Charging Voltage Range 27.8V - 28V 13.9V - 14.4V Max Charge Voltage 29.2V 14.6V

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Communications bus
CANBus and RS485, over RJ-45

Communications CANBus / RS485 CANBus / RS485

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Rated charge cycles
4000-6000 cycles at 80% DOD, measured at 0.5C

the HUSKY2 has a lifespan of over 10 years and is engineered to withstand more than 4000 - 6000 cycles at 80% Depth of Discharge (DOD) at a rate of 0.5 C.

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

How the cells are arranged
4S

BMS Cutoff Range 21V - 23.5V 10.5V - 11.75V Cell Configuration 8S 4S

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Charging voltage
14.25V bulk, absorb and charge

Charge Voltage 14.25V 28.5V 57V Bulk Voltage 14.25V 28.5V 57V Absorption Voltage 14.25V 28.5V 57V Absorption Time 0 minutes 0 minutes 0 minutes Float Voltage 13.75V 27.5V 55V Equalize Off Off Off

Source: bigbattery.com/wp-content/uploads/2024/10/HUSKY2-SpecSheet-1.5.pdf

Highest charge current it will take
200A

Max Discharge Peak Current 300A (Max 5 seconds) 350A (Max 5 seconds) Max Charge Current 150A 200A

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Maximum continuous discharge
300A continuous, 350A peak

Max Cont. Discharge Current 300A 200A 150A Max Continuous Power 5120W 5120W 7500W Max Discharge Peak Current 350A (Max 5 seconds) 300A (Max 5 seconds) 225A (Max 5 seconds) Max Charge Current 200A 150A 100A

Source: bigbattery.com/wp-content/uploads/2024/10/HUSKY2-SpecSheet-1.5.pdf

Continuous output power
3840W

Max Continuous Discharge Current 200A 300A Max Continuous Power 5120W 3840W

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Peak discharge
350A for 5 seconds

Max Discharge Peak Current 300A (Max 5 seconds) 350A (Max 5 seconds)

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Battery care and safety

Where its BMS cuts off
10.5V to 11.75V

BMS Cutoff Range 21V - 23.5V 10.5V - 11.75V

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Ingress protection
IP65

Max Connections Up to (16) Parallel Up to (16) Parallel Protection Rating IP65 IP65

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Temperatures it may be charged in
-20°C to 45°C

Charge Temperature Range -4°F - 113°F (-20°C - 45°C) -4°F - 113°F (-20°C - 45°C)

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Temperatures it may be run in
-20°C to 50°C

Discharge Temperature Range -4°F - 131°F (-20°C - 55°C) -4°F - 122°F (-20°C - 50°C)

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Temperatures it may be stored in
-20°C to 50°C for up to 6 months

Storage Temperature Range -4°F - 113°F (-20°C - 45°C) (Max 6 months) -4°F - 122°F (-20°C - 50°C) (Max 6 months)

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Other findings

Fire suppression system
Built-in fire suppression system

● Built-in heating system ● Built-in fire suppression system ● Impact Resistant ● Water resistant

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Inverter configuration
Bluetooth app sets ID and protocol; otherwise use the lead-acid profile

If the HUSKY2 battery is connected to an inverter and you want to communicate the battery with the inverter, the battery address and protocol need to be configured through the Apple or Android Bluetooth. If communication is not needed, it can be directly connected to the inverter and select the Lead-Acid configuration when setting the inverter.

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Maximum parallel units
Up to 16 in parallel

Max Connections Up to (16) Parallel Up to (16) Parallel

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Storage maintenance charge
3.5V per cell at 50A, stopping at 5A; every 9, 6 or 3 months

≤20 ℃ Once / 9M 14V 50A CC/CV Charging to 14V, cut-off current : 5A 12V HUSKY 2 20 ℃~ 30 ℃ Once / 6M 30 ℃~ 40 ℃ Once / 3M

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

Supported inverters
16 entries: 5 on RS485, 11 on CAN, 3 makers on both

7.2. Supported Inverters P0 RS485 P0 CAN 1 Growatt 1 Growatt 2 LuxPower 2 Sol-Ark 3 Schneider 3 Deye 4 Inhenergy 4 Megarevo 5 Voltronic 5 Victron 6 LuxPower 7 SMA 8 Inhenergy 9 Solis 10 Afore 11 Studer

Source: bigbattery.com/wp-content/uploads/2024/05/12V-24V-HUSKY-2-USER-MANUAL-Inverter-Compatible-1.pdf

United States — CPSC

We did not match this product to any recall in the data we hold from CPSC, last checked September 23, 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 23, 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 23, 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 23, 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 23, 2026. Check France’s own search: rappel.conso.gouv.fr

New Zealand

We did not match this product to any recall in the data we hold from New Zealand, last checked September 23, 2026. Check New Zealand’s own search: productsafety.govt.nz/recalls

Singapore

We did not match this product to any recall in the data we hold from Singapore, last checked September 23, 2026. Check Singapore’s own search: consumerproductsafety.gov.sg/consumers/safety-alerts-and-recalls

South Africa

We did not match this product to any recall in the data we hold from South Africa, last checked September 23, 2026. Check South Africa’s own search: thencc.org.za/product-recalls

Ireland

We did not match this product to any recall in the data we hold from Ireland, last checked September 23, 2026. Check Ireland’s own search: ccpc.ie/consumer-advice/product-safety/product-safety-notifications

South Korea

We did not match this product to any recall in the data we hold from South Korea, last checked September 23, 2026. Check South Korea’s own search: safetykorea.kr/recall/recallBoard

Norway

We did not match this product to any recall in the data we hold from Norway, last checked September 23, 2026. Check Norway’s own search: farligeprodukter.no/search

Netherlands

We did not match this product to any recall in the data we hold from the Netherlands, last checked September 23, 2026. Check the Netherlands’ own search: nvwa.nl/actueel/veiligheidswaarschuwingen/overzicht

Sweden

We did not match this product to any recall in the data we hold from Sweden, last checked September 23, 2026. Check Sweden’s own search: konsumentverket.se/artikellista/aterkallelser-och-varningar-for-sakerhetsbrister

Japan

We did not match this product to any recall in the data we hold from Japan, last checked September 23, 2026. Check Japan’s own search: recall.caa.go.jp

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.

Platforms — none listed

No sourced compatibility evidence is on file for this battery yet.