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Garmin Force Pro (20–45 V, 50" and 57" shafts, brushless)

Garmin

Garmin's product page

The Garmin Force Pro (20–45 V, 50" and 57" shafts, brushless) is a trolling motor with a peak draw of 60 A, a continuous draw of 60 A, a stated minimum of 100 Ah for lead-acid or AGM and a recommended capacity of 50–100 Ah.

Last updated: 21 September 2026

What we found

  • Battery models are matched as running it across several brands, by setting each maker's published figures against the other — neither names the pairing, 15 of them needing more than one pack in series.
  • Marine-grade deep-cycle; lithium generally preferred.
  • 3 batteries are compared as NOT suitable for it: Dakota Lithium 12V 46Ah Deep Cycle U1, Dakota Lithium 12V 54Ah, Renogy 12V 20Ah Deep Cycle, by setting each maker's published figures against the other — neither names the pairing.
  • Published as 60 A continuous, on 20–45 V · 114.7 lbs at speed 20.
  • Specifications are published for it, each with its source.

At a glance

System voltage 36 VContinuous draw 60 A continuousPeak draw 60 A continuous114.7 lb thrust

The maker’s own installation requirements: 42 VDC or greater, suitable for 60 A continuous (not to exceed 90 A). A battery that meets the draw does not make the wiring optional.

What this device draws

Max amp draw
60 A continuous, on 20–45 V

“Input voltage From 20 to 45 Vdc Input amperage 60 A continuous”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/Force_Pro_Trolling_Motor_OM_EN-US.pdf

Continuous draw the maker states
60 A continuous

“Input amperage 60 A continuous”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-7EE20A35-4E0F-4E6A-89E5-270C5C907E3F.html

Input voltage it accepts
20 to 45 V dc

“Input voltage From 20 to 45 Vdc”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-7EE20A35-4E0F-4E6A-89E5-270C5C907E3F.html

Power drawn at full throttle
Full power: 2160 W

“Main power usage at 36 Vdc 60 A Off: 72 mW Full power: 2160 W”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-7EE20A35-4E0F-4E6A-89E5-270C5C907E3F.html

Standard the figures were measured under
ISO 13342, ±22 N and ±5 A

“These values are gathered based on the ISO13342 test setup, using the Garmin ® high efficiency propeller, in relatively calm water, with the motor deployed deeply enough not to ventilate, and with tolerances of ±22 N (5 lbf) and ±5 A. Voltage levels have been measured at the trolling motor power cable terminals.”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-9BEB843E-2C2B-450E-B9B2-F4C9F29D0C2E.html

What it draws at half throttle
Speed 10 of 20 draws 10.8 A

“10 29.7 132.0 10.8 30.7 136.4 7.5”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-9BEB843E-2C2B-450E-B9B2-F4C9F29D0C2E.html

Max thrust
114.7 lbs at speed 20

“20 90.0 400.3 58.9 114.7 510.1 55.9”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-9BEB843E-2C2B-450E-B9B2-F4C9F29D0C2E.html

What battery it needs

Current the battery must be able to supply
At least 60 A continuous, whatever the chemistry

“Regardless of battery type, the battery must be capable of supplying at least 60 A of continuous current.”

Source: support.garmin.com/en-US/?faq=ZY96utROfo8AdOceNXevU8

Amp-hours the maker names for lead acid
100 Ah for lead-acid or AGM

“Lead-acid or AGM batteries: 100 Ah minimum”

Source: support.garmin.com/en-US/?faq=ZY96utROfo8AdOceNXevU8

Battery type the maker recommends
Marine-grade deep-cycle; lithium generally preferred

“For best results, use a marine-grade deep-cycle battery designed for trolling motor applications. Lithium batteries are generally preferred because of their weight, performance, and charging characteristics, but the ideal battery depends on the specific vessel and installation. Consult the boat manufacturer or dealer for recommendations suited to your setup.”

Source: support.garmin.com/en-US/?faq=ZY96utROfo8AdOceNXevU8

Amp-hours the maker recommends
50–100 Ah for lithium

“Lithium batteries: 50 Ah to 100 Ah”

Source: support.garmin.com/en-US/?faq=ZY96utROfo8AdOceNXevU8

Whether it can run on lithium
Supported, and preferred by the maker

“For best results, use a marine-grade deep-cycle battery designed for trolling motor applications. Lithium batteries are generally preferred because of their weight, performance, and charging characteristics, but the ideal battery depends on the specific vessel and installation.”

Source: support.garmin.com/en-US/?faq=ZY96utROfo8AdOceNXevU8

Circuit breaker it requires
42 V+, 60 A continuous — up to 90 A with conditions

“42 VDC or greater, suitable for 60 A continuous NOTE: You can protect the system by using a larger circuit breaker, not to exceed 90 A, if you are operating under high temperatures or if you are sharing the circuit with other devices. You should verify that your boat wiring meets marine wiring standards using a larger breaker before changing it.”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/Force_Pro_Trolling_Motor_OM_EN-US.pdf

Size and fit

Stated weight
50 in. model: 30.25 kg (66.7 lb.)

“Weight (motor, mount, and cables) 50 in. model: 30.25 kg (66.7 lb.) 57 in. model: 32.06 kg (70.7 lb.)”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-7EE20A35-4E0F-4E6A-89E5-270C5C907E3F.html

Cable Garmin supply
50 in. model: 1.2 m (4 ft.) 57 in. model: 1.1 m (3.5 ft.)

“Power cable length 50 in. model: 1.2 m (4 ft.) 57 in. model: 1.1 m (3.5 ft.)”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-7EE20A35-4E0F-4E6A-89E5-270C5C907E3F.html

Other findings

Battery gauge is wrong on lithium
The motor's own gauge misreads a lithium pack

“Battery level indicators are optimized for lead-acid batteries and may be inaccurate for other types of batteries such as lithium-ion.”

Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/Force_Pro_Trolling_Motor_OM_EN-US.pdf

Batteries documented to run this

Every row below is for this trolling motor wired at 36 V. It is also documented at 24 V, and a battery maker’s fitment rule is written per voltage. It turns on the thrust at the voltage the motor is actually wired for, and we hold one thrust figure for this trolling motor — the one at 36 V. So the other configurations are not answered here rather than answered no.

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.

“This product is suitable for 12V trolling motors up to 70lb thrust; 2*identical batteries in series for 24V trolling motors up to 100lb thrust; 3*identical batteries in series for 36V trolling motors up to 120lb thrust.”

Only at 36 volts, and on published figures — neither maker has named the other and nobody has tested this pairing — check yours before buying.

Only within LiTime's ceiling of 120 lb of thrust for a 36 volt motor on three packs in series, and this motor's 100 lb is within it — check yours before buying.

Only within Redodo's ceiling of 120 lb of thrust for a 36 volt motor on three packs in series, and this motor's 100 lb is within it — check yours before buying.

The packs must be identical to each other — the maker's rule says so, and mixing capacities or ages in series is how one cell group ends up carrying the bank.

The motor's maker asks for 100 Ah minimum for a lead-acid or AGM battery, and 50 Ah to 100 Ah where the battery is lithium, and the battery must be able to supply 60 A of continuous current.

Which of the two figures applies turns on what is inside this pack, and its chemistry is not published in anything we hold — so the stricter one is used.

The pack's maker permits the series wiring this needs: "Max.

This pack is rated 100 Ah and 100 A continuous.

The pack's maker permits the series wiring this needs: "In Series, and In Parallel (up to 4) — Renogy state series support without naming a limit".

The pack's maker permits the series wiring this needs: "Series & Parallel (4S8P)".

The pack's maker permits the series wiring this needs: "Series & Parallel (4S4P)".

This pack is rated 200 Ah and 200 A continuous.

The battery maker's thrust rule covers this motor, but the motor's own documentation asks for 60 A continuously and this pack is rated for 50 A.

Both statements are recorded; neither has been resolved in favour of the other.

Batteries documented as NOT sufficient

The motor's maker asks for 100 Ah minimum for a lead-acid or AGM battery, and 50 Ah to 100 Ah where the battery is lithium, and the battery must be able to supply 60 A of continuous current.

Which of the two figures applies turns on what is inside this pack, and its chemistry is not published in anything we hold — so the stricter one is used.

The pack's maker permits the series wiring this needs: "not intended or warrantied for serial wiring applications above 48V — three of these packs is 38.4 V, four would be 51.2 V".

Sources

  • Archived document

    Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/Force_Pro_Trolling_Motor_OM_EN-US.pdf

    Retrieved September 13, 2026

  • Battery Recommendations For the Force Trolling Motor | Garmin Customer SupportArchived document

    Source: support.garmin.com/en-US/?faq=ZY96utROfo8AdOceNXevU8

    Retrieved September 13, 2026

  • Force Pro Owner's Manual - Trolling MotorArchived document

    Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-7EE20A35-4E0F-4E6A-89E5-270C5C907E3F.html

    Retrieved September 13, 2026

  • Force Pro Owner's Manual - Motor Thrust and Current-Draw InformationArchived document

    Source: www8.garmin.com/manuals/webhelp/GUID-A7668193-255A-4F7A-AAEC-C153FB825CB4/EN-US/GUID-9BEB843E-2C2B-450E-B9B2-F4C9F29D0C2E.html

    Retrieved September 13, 2026