BigBattery HUSKY 2 48V 100Ah (INV)

SKU FHSKY-48051-G2-INV

The BigBattery HUSKY 2 48V 100Ah (INV) is a battery pack with a nominal voltage of 51.2V, a nominal capacity of 100 Ah, 5.12 kWh of energy, LiFePO4 cells, M8, a continuous discharge of 100 A and a peak of 150 A (Max 3 seconds).

Last updated: 25 October 2026

Battery and charging

Charging voltage range: 55.6V - 57V
Maximum charge voltage: 58.8V maximum
48V LiFePO4 Battery + Inverter Comms | Big Battery · retrieved 15 September 2026
“Max Charge Voltage: 58.8V Operating Voltage Range: 48 – 57V Suggested Low Voltage Cutoff: 48 – 50.8V”
Source: bigbattery.com/products/48v-husky-2-5-12kwh-lifepo4-battery-with-inverter-comms
57.6 V maximum, charging 55.6-57 V
5-1-26HUSKY2-INV-Inverter-Version-SpecSheet.pdf · retrieved 15 September 2026
“FHSKY-48051-G2-INV 48V 51.2V LiFePO4 5.12 kWh 100 Ah 55.6V - 57V 57.6V 48V - 57V 48V - 50.8V 42V - 47V 16S 100A 7500W 150A (Max 3 seconds) 100A -4ºF - 113ºF -4ºF - 122ºF 59ºF - 95ºF -4ºF - 122ºF (Max 6 months) 12.6 x 18.1 x 9.8 in (320 x 460 x 249 mm) 100 lbs (45.4 kg) Up to (16) Parallel IP65 / NEMA 4X CANBus / RS485 Yes”
Source: bigbattery.com/wp-content/uploads/2026/05/5-1-26HUSKY2-INV-Inverter-Version-SpecSheet.pdf
Maximum charge voltage per cell: 58.8V
Recommended continuous power: 4000 W recommended, against a 7500 W maximum
Communications bus: CANBus / RS485
Energy: 5.12kWh
Voltage: 51.2V
Chemistry: LiFePO4
Rated charge cycles: 3,500 to 5,000 cycles (stated for LiFePO4 generally)
Battery water resistance: IP65 / NEMA 4X
Cell arrangement: 16S
Nominal capacity: 100 Ah
Maximum continuous discharge: 100 A continuous, 150 A for 3 s
Peak discharge: 150A (Max 3 seconds)
Series and parallel limit: Up to (16) Parallel
Highest charge current it will take: 100A
Continuous output power: 7500W
Continuous discharge current: 100A
Stated energy: 5.12 kWh
Charging voltage: 57V
Float voltage: 55V
Working voltage range: 48V - 57V

Battery care and safety

Where its BMS cuts off: 42V - 47V
Suggested low-voltage cut-off: 48V - 50.8V
Ingress protection: IP65 / NEMA 4X
Temperatures it may be charged in: -4ºF - 113ºF
Temperatures it may be run in: -4ºF - 122ºF
Temperatures it may be stored in: -4°F – 122°F (-20°C – 50°C) (Max 6 months)
Heating built into the battery: Yes

Size and fit

Overall dimensions: 12.6 x 18.1 x 9.8 in (320 x 460 x 249 mm)
Stated weight: 100 lbs (45.4 kg)
Terminal thread: M8
Which way up it may be fitted: positioned on any of its sides except with the top side facing downward
Series and parallel connection: not series capable

Identity

Model code: FHSKY-48051-G2-INV
UPC: 850061252296

How this brand publishes

Which revision of the document these figures were read from: 05/01/2025

Other findings

Communication port pinout: Pins 1, 2, 7, 8 RS485; pins 4 and 5 CAN; 3 and 6 unused
Configuration app: "BigBattery Husky 2", iOS and Android
Enclosure rating: IP65 and NEMA 4X, with a heater
Inverter configuration: Bluetooth sets ID and protocol; otherwise a lead-acid profile
Maximum parallel units: Up to (16) Parallel
Module id addressing: Master is ID 1 and connects to the inverter; slaves ascend
Optimal discharge temperature range: 59ºF - 95ºF
Parallel matching condition: at the same voltage
Prohibited applications: not meant for mobility systems
Self heating behaviour: Heats to above 0°C first, then charges
Storage duration by temperature: 6 months, -20 to 50 °C, above 50% charge
Storage state of charge: At least 50%, and a full pack taken down to 80% first
Supported inverters: 12 inverter brands; Victron not listed

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:

The device’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 device's manufacturer or a dealer before buying.

Rhodan Marine 5th Generation GPS Anchor (24, 36 or 48 V)Figures comparedView device: Rhodan Marine 5th Generation GPS Anchor (24, 36 or 48 V) →
One of these.
Only on the 48 volt model, and on published figures — HUSKY 2 48V 100Ah (INV) is rated 100 A continuous and Rhodan rate this motor at up to 50 A — check yours before buying.
Rhodan state this system runs on 24, 36 or 48 volts depending on the model, and that its "system current draw will vary with thrust level up to a maximum of 50 amps at 100% thrust". This pack is 51.2 V nominal — what the industry sells as 48 volts — and its maker rate it at 100 A continuous, with a peak of 150A (Max 3 seconds), leaving 50 A of headroom at the motor's hardest moment. The two figures are different kinds of number: Rhodan's is a peak draw and the pack's is a continuous rating, so the comparison runs the cautious way round. Rhodan also ask for a 60 amp breaker. BigBattery sell this one for inverter and off-grid work rather than for a boat, and it is a 5.12 kWh bank rather than a trolling-motor pack. The electrical comparison holds regardless — the pack states what it can supply and the motor states what it draws — but what it is sold for is a fact about it a reader should have. Neither company has named the other and nobody has tested the pairing.
Source: bigbattery.com/products/48v-husky-2-5-12kwh-lifepo4-battery-with-inverter-comms

Sources

BigBattery — HUSKY 2 48V 100Ah (INV)Manufacturer battery page
BigBattery
Source: bigbattery.com/products/48v-husky-2-5-12kwh-lifepo4-battery-with-inverter-comms
Retrieved September 15, 2026
Archived document
Source: bigbattery.com/wp-content/uploads/2026/05/5-1-26HUSKY2-INV-Inverter-Version-SpecSheet.pdf
Retrieved September 15, 2026
Archived document
Source: bigbattery.com/wp-content/uploads/2025/06/HUSKY-2-USER-MANUAL-1.8-Inverter-Version.pdf
Retrieved September 15, 2026