Minn Kota is a trademark of its owner. Amp Hour Supply isn’t affiliated with Minn Kota.
The short answer. Every Endura C2 is a 12 V tiller motor, so it’s one battery. Minn Kota’s size is 105 Ah or more, lead-acid. Breaker: 50 A on the 30, 40 and 45 lb; 60 A on the 50 and 55 lb. The manual doesn’t mention lithium. One 100 Ah lithium at 12 V with a 100 A continuous rating runs any of them; the approval, if you want one, comes from the pack maker, not Minn Kota.
Pick your thrust
| Endura | Max draw | Breaker | Manual table (5%), 5 to 25 ft | Help-center table (3%), 5 to 25 ft |
|---|---|---|---|---|
| 30 lb | 30 A | 50 A, 12 VDC | 10 / 10 / 8 / 6 / 4 | same |
| 40 and 45 lb | 42 A | 50 A, 12 VDC | 10 / 8 / 6 / 4 / 4 | 8 / 6 / 4 / 2 / 2 |
| 50 and 55 lb | 50 A | 60 A, 12 VDC | 8 / 6 / 4 / 4 / 2 | 8 / 4 / 2 / 2 / 1 |
AWG, batteries to the motor leads. The manual prints the 5% column; Minn Kota’s current help-center table for the same thrusts is the heavier 3% column. We’d follow the heavier. On a transom motor the battery is usually a few feet away, so the 5 ft column is the one most owners need.
One oddity: the Endura 30’s own leadwire in the box is 14 gauge with spade terminals, thinner than the 10 AWG its table asks for at 5 ft. The 55 ships with 10 gauge. The manual doesn’t explain the difference, so keep the 30’s run short.
Battery
Minn Kota: “any lead acid, deep cycle marine 12 volt battery”, 105 Ah or more for best results. Lithium isn’t in the Endura manual; the word never appears.
What we’d fit: Pro-Guide 24M100 12V 100Ah Group 24 lithium, 100 A continuous, 23.8 lb in a Group 24 case. That’s less than half the weight of a 105 Ah lead-acid, which matters on a jon boat or a canoe where this motor usually ends up. Charge it with Victron Blue Smart IP22 12/30 on the lithium setting at Pro-Guide’s 14.6 V. Both are in the store.
The 30 lb motor pulls only 30 A, so 100 Ah is generous. We don’t list a smaller 12 V trolling pack yet.
Run time (example)
Run time calculator math, trolling mode: amp hours x 80% over the amps, warm day, on the 24M100.
| Endura | At max draw | At half |
|---|---|---|
| 30 lb (30 A) | 2 h 40 min | 5 h 20 min |
| 40 and 45 lb (42 A) | 1 h 54 min | 3 h 49 min |
| 50 and 55 lb (50 A) | 1 h 36 min | 3 h 12 min |
Tiller speeds are stepped (five forward, three reverse), and the lower steps pull far less than the max draw. The manual gives no amps per step.
Hooking it up
Red lead through the breaker to the battery’s positive, black to negative. That’s the whole diagram. Minn Kota’s 60 A breaker is the MKR-19; we don’t stock a breaker yet.
Lines from the manual that touch the warranty: – Alternator or DC chargers that tie the trolling battery’s negative to the crank battery’s negative “can damage” the motor and void the warranty. On a small boat with one battery for everything, that’s a real question: Minn Kota wants the trolling motor on its own battery. – Disconnect the motor while charging. – “The Endura is not intended to be a primary propulsion motor.” Heavy use raises motor temperature.
There’s no battery meter on an Endura. The pack’s own gauge, or a plug-in voltmeter, is how you’ll know where you stand.
Quick answers
What size battery for an Endura C2 55? Minn Kota says a 12 V deep-cycle marine battery, 105 Ah or more (lead-acid). Our lithium fit is a 12 V 100 Ah pack with a 100 A continuous rating.
Can I run an Endura on a lithium battery? The Endura manual doesn’t mention lithium. Electrically a 12 V lithium pack runs it; the approval is the pack maker’s.
What breaker for an Endura 30? 50 A, manual reset, rated 12 VDC. The 50 and 55 lb take 60 A.
Why does my Endura get hot? Minn Kota says it isn’t meant as a primary propulsion motor, and heavy use raises its temperature.
Sources
- Minn Kota Endura C2 30 and C2 55 owner’s manuals (2018), pages 5, 7, 10-12, 16, 22-24, 26
- Minn Kota Endura product page: https://minnkota.johnsonoutdoors.com/us/shop/freshwater-trolling-motors/endura
- Minn Kota help-center wire table (via our fit table): https://minnkota-help.johnsonoutdoors.com/hc/en-us/articles/24943541720471-Trolling-Motor-Amp-Draw-Circuit-Breakers-Fuses-and-Extending-the-Battery-Leads
- Pro-Guide product page for the 24M100; Victron Blue Smart IP22 manual (our product page)
- Trolling motor battery: 12V, 24V or 36V, wired right, Run time calculator, Wire gauge calculator
