Summary of "Lead-Acid to Lithium Trolling Motor Upgrade? Power Queen 24V 50Ah"

Product overview

Power Queen 24V 50Ah LiFePO4 trolling-motor battery — a single-voltage 24 V lithium iron phosphate battery, nominal 50 Ah (≈1,280 Wh). It’s a Group 24 physical size, much smaller and lighter than typical lead-acid Group 27/31 batteries commonly used in 24 V trolling-motor setups.

Key features

Capacity: 50 Ah nominal; independent test measured ~53 Ah (106.6% of rating).
Energy: ~1,280 Wh (roughly equivalent usable energy to two 12 V lead-acid batteries in series).
Weight: ~21 lb (vs ~50 lb per typical lead-acid battery — saves ~70+ lb when replacing two).
Bluetooth-enabled BMS: state-of-charge, cell balancing, temperature, cycle count, fault alerts; app can monitor multiple batteries.
Protections: low-temperature charge cutoff, overvoltage, undervoltage, short-circuit protection.
Low-temperature behavior: will not accept charge below ~32–36°F (protects from lithium plating); can discharge down to about -4°F. No self-heating.
Charging requirement: charger must supply ~29.2 V. Power Queen’s 20 A charger charges in ≈2.5 hours; 5–10 A chargers acceptable for overnight charging. Charger uses an Anderson quick-connect (supplied charger is not waterproof).
Manufacturer/support: budget-oriented brand; support typically via email.

Performance and user experience

Typical runtime: roughly 8 hours of average trolling/fishing on a properly matched 24 V trolling motor in a 17–18 ft light/medium boat (application-dependent).
Reviewer anecdote: after 7 hours of active fishing the battery still had ~60% charge; reviewer believes a 10-hour day is often feasible, while 12 hours could be borderline depending on load and conditions.
Cycle life: LiFePO4 chemistry offers thousands of cycles and much longer service life than lead-acid; owners often move batteries between boats.
Physical fit: smaller footprint than Group 27/31 — may need minor battery-tray or foam-block adjustments but can free up space.

Pros

Large weight and size reduction compared with two 12 V lead-acid batteries.
Usable energy roughly equivalent to two 12 V lead-acid batteries but with higher usable percentage and cycle life.
Fast-charge capable with an appropriate charger (20 A example).
Bluetooth monitoring and robust BMS protections.
Long service life and durability.
Easy to add batteries in parallel for more capacity and redundancy.

Cons and caveats

Requires a 29.2 V charger — most multi-bank lead-acid chargers will NOT work.
Supplied charger is not waterproof; must be removed after charging unless you buy a waterproof solution.
No self-heating — will not accept charge in freezing conditions until the battery warms.
Manufacturer support is typically email only (common for budget brands).
May require minor modifications to battery tray when replacing larger lead-acid group sizes.

Comparisons

Versus two 12 V lead-acid batteries (in series): same usable energy for many use cases but at much lower weight, greater usable capacity (lead-acid “100 Ah” often only ~50% usable), and longer cycle life.
Versus larger/36 V setups: tournament anglers sometimes build more complex parallel/series systems for redundancy and higher power; recommendation here is to start with one 24 V 50 Ah and add a second identical battery in parallel if more runtime or redundancy is needed.
In capacity testing among many batteries, this Power Queen 24 V ranked mid-pack but still exceeded its rated capacity (106.6%).

Practical recommendations / setup advice

Start with one Power Queen 24 V 50 Ah and monitor real-world runtime via Bluetooth.
If you need more runtime or redundancy, add a second identical battery in parallel — cost-effective and each battery can run the motor alone.
Purchase a proper 29.2 V charger (Power Queen 20 A charger is an example). If you need on-board charging, buy a waterproof charging solution because the supplied charger is not waterproof.
Check battery tray fit — plan small adjustments if replacing Group 27/31 batteries.

“Ease into” lithium: buy one, evaluate with Bluetooth monitoring, then add a second in parallel only if needed.

Numerical / test data

Rated: 24 V, 50 Ah, ≈1,280 Wh.
Measured capacity: ≈53 Ah (106.6% of rating).
Example runtime: ≈8 hours average fishing; reviewer had ~60% remaining after 7 hours.
Charger example: Power Queen 20 A charger — full charge in ≈2.5 hours.
Weight: ≈21 lb.

Unique points mentioned

24 V 50 Ah LiFePO4 ≈ usable energy of two 12 V lead-acid batteries.
Lead-acid rated capacities are often misleading due to limited usable depth-of-discharge (~50%).
Parallel addition of identical lithium batteries provides redundancy and modular scaling.
Group 24 size — smaller than Group 27/31 — enabling weight and space savings (~70+ lb reduction vs two lead-acid).
Low-temperature charging protection (no charge below ~32–36°F) and no self-heat.
Bluetooth monitoring is highly recommended for state-of-charge and diagnostics.
Supplied charger uses Anderson connector and is not waterproof.
Budget-brand support typically via email; reviewer reported no issues across several units.

Speakers

Single reviewer/presenter — all testing results and opinions come from one speaker.

Verdict

The Power Queen 24 V 50 Ah LiFePO4 is a solid, affordable upgrade for anglers using 24 V trolling motors on small-to-medium boats. It delivers comparable usable energy to two 12 V lead-acid batteries while saving significant weight, providing longer life and Bluetooth monitoring. Recommended as a starter lithium battery: buy one, evaluate real-world runtime, and add a second in parallel only if you need more capacity or redundancy. Ensure you purchase a proper 29.2 V charger and consider a waterproof charging solution for on-board charging.