Best trolling motor battery charger: match it to how your batteries are wired
Updated 2026-11-10 · Pick: NOCO GENPRO10X3 · Dealectric link: 43.8V 25A: $149.99 on redodopower.com (checked 2026-11-10): https://dealectric.com/go/redodo-43-8v-25a-lifepo4-charger
Short answer. The best trolling motor battery charger for separate 12V AGM or LiFePO4 batteries is the onboard NOCO GENPRO10X3: 3 banks × 10A, IP68. A single 36V lithium battery needs a 43.8V charger such as Redodo's 43.8V 25A; Minn Kota PCL and NOCO GENPRO banks charge 12V only.
Searched as: Minn Kota Precision PCL charger lithium AGM specs NOCO GENPRO10X3 ProMariner ProSport HD battery charger
How this table was made: each figure comes from the maker's own US product page or manual, or from the reviewer named next to it, checked 2026-11-10. Dealectric does not test units itself. Rows with a Buy link are products Dealectric lists: the links are affiliate links, and their codes are re-tested in the brand's own cart every day (last check 2026-11-13).
| Model | Battery setup it charges | Charge voltage | Output | Hours to refill 100 Ah (Ah ÷ A) | Price | Buy |
|---|---|---|---|---|---|---|
| NOCO GENPRO10X3 | Up to 3 separate 12V batteries, one per bank (12V, 24V or 36V boats); IP68 (BatteryStuff) | 14.6 V lithium, 14.8 V AGM per bank (NOCO guide) | 3 × 10 A | 10 h per 12V battery, all banks at once | $324.95 (BatteryStuff, 2026-11-10) | |
| Minn Kota MK 330 PCL | Up to 3 separate 12V batteries; not single 24V/36V lithium (Minn Kota) | 14.5 V max lithium (Minn Kota) | 3 × 10 A | 10 h per 12V battery, all banks at once | $399.99 (Vance Outdoors, 2026-11-10) | |
| 43.8V 25A | One 36V (38.4V) LiFePO4 pack; IP65 | 43.8 V (3 × 14.6 V) | 1 × 25 A | 4 h | $149.99 on redodopower.com, 2026-11-10 | Buy |
| Dakota Lithium 36V 8A LiFePO4 charger | One 36V LiFePO4 pack (Dakota) | 43.2 V (3 × 14.4 V) | 1 × 8 A | 12.5 h (Dakota: under 12 h) | $100 (maker, 2026-11-10) | |
| 29.2V 20A MINI | One 24V LiFePO4 pack | 29.2 V (2 × 14.6 V) | 1 × 20 A | 5 h (Redodo: 5 h for 24V 100Ah) | $109.99 on redodopower.com, 2026-11-10 | Buy |
| Dakota Lithium 24V 10A LiFePO4 charger | One 24V LiFePO4 pack (Dakota) | 28.8 V (2 × 14.4 V) | 1 × 10 A | 10 h | $60 (maker, 2026-11-10) | |
| 14.6V 20A | One 12V LiFePO4 battery | 14.6 V | 1 × 20 A | 5 h (Redodo: 5 h on its 12V 100Ah) | $82.99 on redodopower.com, 2026-11-06 | Buy |
What the differences mean
- Refill time per 100 Ah: at 10 A per bank, 100 Ah ÷ 10 A = 10 h, with all three banks charging together (NOCO GENPRO10X3, Minn Kota MK 330 PCL). On a 36V 100Ah pack the Redodo 43.8V 25A takes 100 Ah ÷ 25 A = 4 h, and the Dakota 36V 8A takes 100 Ah ÷ 8 A = 12.5 h (Dakota quotes under 12 h). These figures cover only the constant-current stage. The final constant-voltage stage adds time.
- Same energy, different speed: three 12V 100Ah batteries and one 36V 100Ah pack hold the same energy (3 × 12.8 V × 100 Ah = 38.4 V × 100 Ah = 3,840 Wh). The GENPRO puts back 30 A × 12.8 V ≈ 384 W. The Redodo 43.8V 25A puts back 25 A × 38.4 V = 960 W, 2.5 times as fast.
- Onboard cost per amp: GENPRO10X3: $324.95 ÷ 30 A = $10.83 per amp. MK 330 PCL: $399.99 ÷ 30 A = $13.33 per amp. Both are 3 × 10 A. The NOCO costs $75.04 less and BatteryStuff lists it as IP68. Vance Outdoors' MK 330 PCL listing says only “waterproof”, with no IP number.
- Battery size per bank: BatteryStuff's GENPRO10X3 listing recommends about 130 Ah or smaller per bank for everyday charging. It treats 230 Ah per bank as maintenance only.
| Your batteries | Charger | Why |
|---|---|---|
| Two or three separate 12V batteries, charger mounted on the boat | NOCO GENPRO10X3 | 3 × 10 A, IP68, lithium or AGM mode set per bank |
| Same, on a boat already set up with Minn Kota gear | Minn Kota MK 330 PCL | 3 × 10 A; check its 14.5 V maximum against your lithium battery's spec |
| One 36V LiFePO4 pack | Redodo 43.8V 25A | 4 h per 100 Ah, IP65; owners of Dakota packs use Dakota's 43.2V charger |
| One 24V LiFePO4 pack | Redodo 29.2V 20A MINI | 5 h per 100 Ah; no water rating listed, so charge off the deck |
| One 12V LiFePO4 battery charged at home | Redodo 14.6V 20A | 5 h per 100 Ah |
Why one 24V or 36V lithium battery needs its own charger
A multi-bank onboard charger gives one 12V output per bank. Minn Kota says its chargers “are designed for 12 Volt battery systems only” and that the PCL line is “not compatible with single 24V and 36V Lithium Batteries”. NOCO's GENPRO guide lists only 12V modes for each bank: 14.6 V lithium, 14.8 V AGM, 14.5 V wet or gel. On a boat wired from separate 12V batteries, each bank charges one battery. A single 36V pack has just two terminals and needs the full 36V-class charge voltage across them, so no 12V bank can charge it.
A 36V (38.4V) LiFePO4 pack charges at three times a 12V pack's voltage: Redodo uses 3 × 14.6 V = 43.8 V and Dakota Lithium uses 3 × 14.4 V = 43.2 V. For 24V packs the figures are 29.2 V (Redodo) and 28.8 V (Dakota). Because the setpoints differ, buy the charger your battery maker specifies, or one whose voltage matches the battery's stated charge voltage. Redodo's 36V 50Ah trolling battery, built for 100–120 lb thrust motors, pairs with the $149.99: https://dealectric.com/go/redodo-43-8v-25a-lifepo4-charger. Check the pack's maximum charge current before you use a 25 A charger on it. For a 24V pack the match is the $109.99: https://dealectric.com/go/redodo-29-2v-20a-mini-lifepo4-charger, and for one 12V lithium battery charged at home it is the $82.99: https://dealectric.com/go/redodo-14-6v-20a-lifepo4-charger.
Water and cold: the Redodo 43.8V 25A is rated IP65 and has a sealed, capped output connector, so it can stay on the boat. Redodo lists no water rating for the 29.2V 20A or the 14.6V 20A, so use those as shore chargers. Minn Kota's PCL applies no temperature compensation in lithium mode. Redodo's trolling batteries stop taking charge below 32°F and resume above 41°F, so in cold weather the battery decides when charging starts, not the charger.
Not recommended
For a 100 Ah lithium battery that you run down hard, skip chargers with 5 or 6 A per bank. Minn Kota's MK 318 PCL gives 6 A per bank: 100 Ah ÷ 6 A = 16.7 h. NOCO's GEN5X3 gives 5 A per bank: 100 Ah ÷ 5 A = 20 h, and NOCO's guide limits each bank to batteries up to 120 Ah. Neither refills a drained trolling battery overnight. Also, never connect a single 36V lithium pack to one bank of a multi-bank onboard charger: each bank supplies only a 12V charge.
Sources
- Minn Kota PCL: 14.5 V maximum lithium voltage; not compatible with single 24V and 36V lithium batteries — minnkota-help.johnsonoutdoors.com
- Minn Kota chargers are for 12V battery systems only; MK 318/330/345 PCL give 6/10/15 A per bank — minnkota-help.johnsonoutdoors.com
- Minn Kota PCL: battery type set per bank; no temperature compensation in lithium mode — minnkota-help.johnsonoutdoors.com
- NOCO GENPRO series: 12V modes only, 14.6 V lithium, 14.8 V AGM, 10 A per bank — manualslib.mx
- NOCO GEN5X3: 5 A per bank, batteries up to 120 Ah — manualslib.mx
- NOCO GENPRO10X3: $324.95, IP68, 3 × 10 A, about 130 Ah per bank for everyday charging — www.batterystuff.com
- Minn Kota MK 330 PCL: $399.99, 3 banks × 10 A — vanceoutdoors.com
- Redodo 43.8V 25A: for 36V (38.4V) LiFePO4, IP65, $149.99 — www.redodopower.com
- Redodo 29.2V 20A MINI: for 24V LiFePO4, 5 h for 24V 100Ah, $109.99 — www.redodopower.com
- Redodo 14.6V 20A: for 12V LiFePO4, $82.99, 2-year warranty on lithium chargers — www.redodopower.com
- Redodo return and refund policy (linked from redodopower.com/policies/refund-policy): 30-day return window; Redodo pays return shipping for defective products, delayed shipping or damaged packages, otherwise return shipping is deducted from the refund; chargers 2-year warranty (read 2026-11-10) — cdn.shopify.com
- Dakota Lithium 36V 8A: 43.2 V, $100, under 12 h for 36V 100Ah — dakotalithium.com
- Dakota Lithium 24V 10A: 28.8 V, $60 — dakotalithium.com
- Redodo 36V 50Ah trolling battery: 100–120 lb thrust, stops charging below 32°F and resumes above 41°F — www.redodopower.com
Published 2026-11-10; updated 2026-11-10. The buy links are affiliate links; see the disclosure. Corrections welcome at [email protected] or /feedback.