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The short answer. Pick 24 V (90 lb) or 36 V (115 lb). Either way Minn Kota rates the Terrova QUEST at 60 A max draw, calls for a 60 A manual-reset breaker, and starts its wire table at 6 AWG. The manual says the motor is optimized for LiFePO4, so a single 24 V or 36 V lithium pack with a 60 A continuous rating is the clean build.
First decide: 24 V or 36 V
The motor reads the voltage you give it when it powers up. Nothing to set. What changes is thrust: 90 lb on two batteries’ worth of volts, 115 lb on three.
If you’re moving up from an older 12 V or 24 V Terrova, the breaker and wire are probably too light. Check them against the table before you reuse anything.
Breaker and wire, straight from the manual
| Setup | Max draw | Breaker | 5 ft | 10 ft | 15 ft | 20 ft | 25 ft |
|---|---|---|---|---|---|---|---|
| QUEST 24V | 60 A | 60 A, 24 VDC min | 6 | 6 | 4 | 4 | 2 AWG |
| QUEST 36V | 60 A | 60 A, 36 VDC min | 6 | 6 | 6 | 6 | 4 AWG |
Minn Kota measures length from the batteries to the motor’s own leads, which are 8 AWG from the factory. Its table assumes 105 C wire, at most two conductors bundled, and 3% voltage drop at full power. Over 25 ft, the manual’s answer is a qualified marine technician, not a bigger wire.
The breaker Minn Kota names is its MKR-27, part 1865115. We don’t stock a 60 A breaker yet, so for now that’s a Minn Kota dealer part.
Where the battery goes, and what goes on it
Two pages of the manual decide most warranty claims:
- Keep the trolling bank to itself. No sonar, no radio, no accessories on it. Accessory negatives, if you must, land on the Low Side battery only.
- Don’t let a charger tie the trolling negative to the engine’s crank negative. Minn Kota says an alternator or DC charger wired that way can damage the motor and void the warranty.
With one 24 V or 36 V lithium pack there’s no Low Side or High Side to think about: red lead through the breaker to the pack’s positive, black to negative. With 12 V batteries in series, follow the series steps in Trolling motor battery: 12V, 24V or 36V, wired right.
Lithium packs that fit
Minn Kota gives lead-acid sizes only (Group 24 through 31). For lithium it gives a rule, not a number: US buyers use batteries that meet Coast Guard regulations and ABYC standards, E-13 in particular. Ask your battery maker for that.
Our fit rule is ours: right voltage, and a continuous discharge rating at or above 60 A.
| Pack | Volts | Ah | Continuous | Note |
|---|---|---|---|---|
| Pro-Guide 24VM90 24V 90Ah lithium | 24 | 90 | 90 A | Group 31 size |
| Pro-Guide 24VM115 24V 115Ah lithium | 24 | 115 | 100 A | Group 31 tall |
| Pro-Guide 36VM60 36V 60Ah lithium | 36 | 60 | 60 A | Meets the peak exactly |
| Pro-Guide 36VM75 36V 75Ah lithium | 36 | 75 | 75 A | Group 31 tall |
Charging the pack
Pro-Guide’s 24 V packs charge to 28.8 V and the 36 V packs to 43.2 V. You need a charger that puts out that voltage. We don’t list one yet (our shore charger is 12 V only). Minn Kota’s advice: a multi-stage charger, motor unplugged while charging, and for lithium, charge just before you go out rather than leaving it full all winter.
Example run times
Same math as the Run time calculator in trolling mode (80% of the amp hours, divided by amps, warm weather). Treat it as a worked example.
- 24VM90: 1 h 12 min at 60 A, 2 h 24 min at 30 A.
- 24VM115: 1 h 32 min at 60 A, 3 h 04 min at 30 A.
- 36VM60: 48 min at 60 A, 1 h 36 min at 30 A.
- 36VM75: 1 h 00 min at 60 A, 2 h 00 min at 30 A.
Sixty amps is the peak, and Minn Kota publishes no per-speed draw for QUEST, so a day of spot-locking and slow trolling lands well past the first column.
What the motor tells you
A low battery throws an error. If the SYSTEM LED flashes red, that’s a critical error and the prop locks until you clear it. Stowed and idle for 90 minutes, the motor shuts itself off, which saves the pack from a slow drain at the dock.
Quick answers
Is the Terrova QUEST lithium compatible? Minn Kota says it’s optimized for LiFePO4 cells. Lead-acid still works.
Which breaker does the Terrova QUEST need? A 60 A manual-reset breaker rated for your voltage. Minn Kota recommends the MKR-27 (1865115).
How big a wire for a 20 ft run? 4 AWG at 24 V, 6 AWG at 36 V, per Minn Kota’s table.
Can I run it on one 36 V battery? The manual only draws 12 V batteries in series, but it sets no rule against a single pack. A 36 V lithium pack with a 60 A continuous rating gives the same voltage the motor expects.
Sources
- Minn Kota Terrova QUEST owner’s manual 2327138 (Rev F, 08/25), pages 5, 14-19, 60, 97-98, 102, 107
- Minn Kota QUEST technology page: https://minnkota.johnsonoutdoors.com/us/learn/technology/quest
- Pro-Guide brochures and product pages (our 24VM90, 24VM115, 36VM60, 36VM75 pages)
- Trolling motor battery: 12V, 24V or 36V, wired right, Run time calculator, Wire gauge calculator
