Which specific tool is the Wheeler WH-FWATB battery compatible with?

This lithium-ion replacement battery is exclusively designed for the Wheeler F.A.T. Wrench AutoTorque motorized torque screwdriver (WH-FWAT). It is not compatible with manual Wheeler F.A.T. Wrenches, digital handheld F.A.T. wrenches, or any other non-Wheeler cordless tools.

How do I charge this battery, and is it compatible with Australian power setups?

The battery features an integrated USB-C charging port on the pack itself for convenient recharging. Because it charges via a standard 5V DC USB connection, it bypasses mains AC voltage issues and is fully compatible across Australia using any standard USB wall adapter, power bank, or 12V vehicle USB port.

What kind of operating runtime and performance can I expect from a full charge?

The 12V lithium-ion battery delivers up to 2 hours of continuous runtime per charge. It also features a built-in LED fuel gauge so you can quickly check the remaining charge status before starting high-volume scope mounting or firearm maintenance tasks.

Is this spare battery suitable for heavy-duty gunsmithing jobs beyond standard screw tightening?

This battery powers the AutoTorque tool up to its maximum limit of 85 in-lbs, which is ideal for scope rings, rail accessories, and action screws. For heavy-duty shop applications exceeding 85 in-lbs, such as barrel installations or large chassis actions, you will need to use dedicated mechanical foot-pound torque wrenches.

FAT Wrench Battery - Wheeler WH-FWATB

The Wheeler F.A.T. Wrench AutoTorque Spare Battery (Manufacturer MPN: 1223619) is a dedicated replacement and auxiliary power pack engineered specifically for the motorized Wheeler F.A.T. Wrench AutoTorque system. Built using a rechargeable lithium-ion chemistry, this 12V battery pack delivers up to 2 hours of continuous operational runtime on a full charge. Featuring a built-in USB-C direct charging port and an integrated LED battery fuel gauge, it enables armorers and firearm technicians to cycle through high-volume bench work without power interruptions by charging one pack while the other is in active use.

Key Features

Dedicated Power Source: Engineered exclusively to power the Wheeler F.A.T. Wrench AutoTorque motorized torque screwdriver.
Extended Runtime: Delivers up to 2 hours of continuous run per charge for prolonged scope mounting and firearm maintenance sessions.
Direct USB-C Charging: Integrated USB-C port allows standalone recharging from standard 5V USB wall adapters, power banks, or 12V vehicle ports without requiring proprietary AC docking stations.
LED Fuel Gauge: Built-in quick-check battery level indicator lights display active charge status at the bench.
Seamless Rotation: Minimises gunsmith bench downtime by serving as a hot-swappable backup battery pack.

Product Specifications

Product Type: Auxiliary / Replacement Cordless Screwdriver Battery
Battery Chemistry: Lithium-Ion (Li-ion)
Nominal Voltage: 12V
Runtime: Up to 2 hours continuous run
Charging Port: Integrated USB-C (cable not included)
Battery Indicator: Integrated LED fuel gauge
Compatibility: Wheeler F.A.T. Wrench AutoTorque (does not fit manual, digital handheld, or non-Wheeler tools)

Who is the Wheeler Fat Wrench Auto Torque Battery for?

Gunsmiths and armorers — requires an auxiliary 12V lithium-ion cordless torque wrench battery to sustain up to 2 hours of continuous runtime during high-volume scope mounting and action screw assembly without bench downtime.
Firearm enthusiasts — relies on a dedicated 12V spare battery to deliver continuous power across up to 2 hours of continuous runtime when conducting extensive rail assembly and accessory maintenance with the AutoTorque motorized system.

Less suitable for: low-volume users who mount optics infrequently and are better served by manual torque wrenches or preset mechanical torque sticks that eliminate battery charging, as well as heavy-duty shop tasks exceeding 85 in-lbs that require mechanical 3/8-inch or 1/2-inch foot-pound torque wrenches.

SKU	WE40241LP
Model #	WH-FWATB
Brand	Wheeler
Shipping Weight	1.0000kg

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Wheeler Wh-Fwatb Battery Replacement 12v Li-Ion

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