Your trolling motor is only as good as the battery running it — undersized or ageing batteries are the most common reason anglers lose power halfway through a day on the water. Here’s how to size a battery correctly and which options we’d recommend.
| Battery | Capacity | Price |
|---|---|---|
| Nocqua 10Ah 12V Lithium Power Pack | 10Ah | £252.99 |
| Dakota Lithium 54Ah 12V LiFePO4 Deep Cycle Battery | 54Ah | £402.99 |
| Amped Outdoors 50Ah Slim LiFePO4 12V Battery | 50Ah | £459.99 |
| Dakota Lithium 100Ah 12V LiFePO4 Marine Battery | 100Ah | £678.99 |
| Relion RB100-LT 12V 100Ah LiFePO4 Lithium Battery | 100Ah | £804.99 |
Why Lithium Beats AGM for Trolling Motors
Trolling motors draw sustained, heavy current, and that’s exactly where lithium (LiFePO4) batteries pull ahead of AGM — they hold voltage steadier under load, meaning your motor keeps consistent thrust as the battery drains rather than gradually weakening. Lithium batteries also weigh roughly half as much for the same capacity, a genuine benefit on smaller boats and kayaks.
Sizing Your Battery
- Small trolling motors / kayaks: a compact pack like the Nocqua 10Ah 12V Lithium Power Pack (£252.99) suits light-draw motors for a half-day out.
- Mid-size bow mounts: the Dakota Lithium 54Ah 12V LiFePO4 Deep Cycle Battery (£402.99) or Amped Outdoors 50Ah Slim LiFePO4 12V Battery (£459.99) give a full day of use for most 12V trolling motors.
- Larger 24V/36V systems or full-day heavy use: the Dakota Lithium 100Ah 12V LiFePO4 Marine Battery (£678.99) or Relion RB100-LT 12V 100Ah LiFePO4 Lithium Battery (£804.99) give the deepest reserve, particularly useful running Spot-Lock or GPS features that draw extra current.
Frequently Asked Questions
Can I just replace my AGM with lithium directly?
In most cases yes, but check your trolling motor and any onboard chargers are lithium-compatible first — some older chargers are set up specifically for lead-acid charging profiles.
How long does a lithium trolling motor battery last?
Quality LiFePO4 batteries like Dakota Lithium and Relion are typically rated for thousands of charge cycles — many times the lifespan of an equivalent AGM battery.
Do I need a special charger for lithium?
Yes, a lithium-compatible charger is recommended — see our full marine battery guide for more on lithium vs AGM.
Not sure what capacity your trolling motor needs? Our team can help you size the right battery — browse the full range in our online shop.
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