24V LiFePO4 Battery Series (25.6V) — 100Ah to 314Ah for RV & Marine

The 24V LiFePO4 battery is the professional’s choice for mobile and marine power above ~3kW — the same energy as 12V at half the current, which means thinner cables, less voltage drop, and cooler running. LJY Energy’s 25.6V (8S) series covers 100Ah to 314Ah for RVs, yachts, trucks, and off-grid sites where 24V is the native system voltage. This series page maps the capacity ladder, the 24V engineering advantage, the feature options, and wholesale/OEM sourcing.

Series at a Glance: the 24V Capacity Ladder

All models share the 25.6V nominal platform (8S × 3.2V, 29.2V typical charge), the same enclosure family, and the same BMS option set. Capacity steps are clean doubles and a flagship step:

Model	Capacity	Energy	Cell config	Typical BMS	Best for
24V 100Ah	100Ah	2.56kWh	8S1P (100Ah cells)	100A	Truck auxiliary, small marine, 24V backup — the entry SKU
24V 200Ah	200Ah	5.12kWh	8S1P (200Ah cells)	200A	Mid-size RV, yachts, off-grid cabins — the sweet spot
24V 314Ah	314Ah	8.04kWh	8S1P (314Ah cells)	200–300A	Full off-grid living, large yachts — maximum single-battery energy

For the engineering detail on the flagship, see our 25.6V 314Ah battery page. For 12V systems, see the 12V series; for home storage at higher energy, see the 51.2V series.

The 24V Advantage: Current, Cable, and Heat

Power (watts) = voltage × current. At the same power, 24V carries half the current of 12V:

Load	Current at 12V	Current at 24V	Cable implication
3kW inverter	~250A	~125A	70mm²+ vs 35mm² — half the copper
5kW inverter	~420A	~210A	Impractical at 12V — standard at 24V

Thinner cables are cheaper, easier to route through RV walls and boat hulls, and run cooler. Voltage drop over long cable runs — the silent killer of 12V system performance — is halved. For any system above ~3kW of inverter load or ~5kWh of storage, 24V is the practical minimum. That is why 24V is native to trucks, larger RVs, and most marine electrical systems.

Capacity-by-Capacity: Who Buys What

24V 100Ah — the entry SKU

Who stocks it: truck parts distributors, marine suppliers, and backup-power dealers. It is the natural lithium replacement for 24V lead-acid pairs in commercial vehicles — two 12V batteries in series become one purpose-built 24V unit with a proper BMS.

Who installs it: truck owner-operators (sleeper-cab auxiliary power), small boat owners with 24V systems, and facilities replacing 24V UPS banks. The install is simple: same voltage, better battery.

Replenishment logic: fleet and commercial buyers reorder on schedule — predictable, repeatable volume. Stock depth matters more than breadth here.

24V 200Ah — the sweet spot

Who stocks it: RV and marine distributors in Australia, New Zealand, Europe, and North America — markets where 24V RV systems are common. At 5.12kWh it covers a full day of typical RV or off-grid cabin use.

Who installs it: mid-size motorhome owners, yacht owners with 24V house banks, and off-grid cabin builders pairing with 2–4kW solar arrays and 24V inverters.

Replenishment logic: the model customers graduate to when 12V systems hit current limits. Dealers who carry both 12V and 24V series capture the migration.

24V 314Ah — the flagship

Who stocks it: premium RV/marine distributors and OEMs. At 8.04kWh from an 8S1P pack of 314Ah prismatic cells (EVE MB31, REPT, Hithium, CATL, CALB, Gotion), it supports air conditioning, induction cooking, and full off-grid living from a single battery.

Who installs it: full-time off-grid RVers, large yacht owners, and expedition vehicle builders. The 8S1P structure — eight cells in series, no parallel strings — simplifies cell matching and long-term balance versus paralleled smaller batteries.

Replenishment logic: high value per unit, informed buyers. They ask about cell grade, BMS firmware, and communication protocols — documentation quality closes the sale.

Feature Options Matrix

Option	Choices	Notes
BMS current rating	100A / 200A / 300A continuous	Size to the inverter — see our BMS selection guide
Bluetooth monitoring	Standard / not fitted	SOC, voltage, current, cell temperatures via app
Communication BMS	CAN / RS485 optional	For Victron-compatible and Deye-compatible inverter integration
Low-temperature protection	Cut-off only / cut-off + self-heating	Essential for winter RV and cold-climate marine
Enclosure protection	Standard / IP65 / IP67	IP67 for bilge-adjacent and exposed installation
Parallel expansion	Per BMS limits	Two 314Ah units = 16kWh; four = 32kWh
OEM branding	Private label / neutral	Custom cases, labels, specification sheets

System Design Notes for Dealers and Installers

Cable sizing: size for the BMS continuous rating. A 200A BMS needs 50–70mm² on main runs; keep runs short.
Fusing: Class-T or ANL fuse within 20cm of the positive terminal.
Parallel wiring: equal-length cables to a common busbar — daisy-chaining causes uneven current sharing. See wiring guidance on our 25.6V 314Ah page.
Charging: 29.2V lithium profile from chargers, alternator DC-DC chargers, or MPPT controllers. Verify the profile — do not reuse lead-acid equalizing chargers.
When to step up to 48V: above ~15kWh of storage or ~8kW of inverter load, 48V halves current again. Our 51.2V 314Ah page covers the home-storage tier.

Wholesale and OEM/ODM

The 24V series serves a professional installer channel — buyers who specify by datasheet and reorder by part number. LJY Energy supplies all three capacity points wholesale with matched BMS options, waterproof enclosures for marine, and project documentation (UN38.3, MSDS). For OEMs: private-label cases, application-specific BMS firmware (RV, marine, truck), and specification sheets for the exact cells shipped.

Cell-level sourcing is available for pack builders — see LiFePO4 battery cells wholesale.

Specifications, pricing, MOQ, and lead times are confirmed per project. Contact us with your target models, BMS features, and volume for a series quotation.

Truck & Fleet Applications

The 24V series has a natural home in commercial vehicles — most heavy trucks run 24V electrical systems natively:

Sleeper-cab auxiliary power: a 24V 100Ah unit runs cab HVAC (with a 24V air conditioner), refrigeration, and electronics overnight without idling the engine. Anti-idling regulations in many jurisdictions make this a compliance purchase, not a luxury.
Fuel savings math: idling a Class 8 truck burns roughly 3–4 liters per hour. A battery + inverter setup that eliminates 8 hours of nightly idling pays for itself in fuel alone within 1–2 years — before counting reduced engine wear and DPF maintenance.
Alternator charging: DC-DC chargers (24V-to-24V lithium profile) recharge from the alternator while driving. Size the DC-DC charger to the alternator’s spare capacity — typically 40–60A for a 24V system.
Fleet standardization: one battery model across the fleet simplifies driver training, spares, and warranty administration. Fleet buyers reorder on schedule — the most predictable volume in the 24V channel.

Application Diversions: Trolling Motors, Aerial Work Platforms & 24V Trucks

The 24V series earns its keep in four channels beyond RV and marine house banks — each with its own buying logic:

Trolling motors (24V 50–100Ah): 24V trolling motors are the standard for mid-size bass and bay boats. A purpose-built 24V battery replaces two 12V units in series with one BMS, cleaner wiring, and single-point monitoring — see our trolling motor battery guide.
Aerial work platforms & scissor lifts: rental fleets are converting 24V lead-acid packs to lithium for the same reason forklift fleets do — opportunity charging between jobs, no watering, consistent lift speed through the discharge curve. Fleet buyers purchase on schedule; stock depth beats breadth.
European 24V truck systems: European commercial vehicles run 24V natively. Distributors serving the EU truck-parts channel stock 24V lithium as the auxiliary-power upgrade — same fitment logic as the North American market, different voltage baseline.
24V backup & UPS banks: facilities replacing 24V lead-acid UPS strings get drop-in voltage with a fraction of the footprint and no maintenance schedule.

Each channel reorders the same three SKUs — the series is the stocking system, the application is the sales conversation. Request a channel quotation with your target application and volume.

Mobility & Wheelchair: 24V Packs for Medical Mobility Dealers

Power wheelchairs and mobility scooters overwhelmingly run 24V — and their batteries are a medical-mobility dealer channel with its own buying logic:

Weight is the headline: a 24V 10–20Ah LiFePO4 pack weighs roughly one-third of the lead-acid pair it replaces. For elderly users and caregivers who lift the battery daily, that weight difference is the entire purchase decision.
Standard sizes: 24V 10Ah and 20Ah in compact flat enclosures are the channel standards — dealers stock the sizes, not custom builds.
Dealer replenishment: medical mobility dealers buy in volume and reorder on the replacement cycle — plus the aftermarket of users replacing aging packs years after the chair purchase.
Travel note: sub-300Wh packs may qualify for airline carry-on under IATA rules — a real differentiator for traveling users. Regulations change; advise customers to confirm with their airline before flying.

No medical-device certification is claimed — target-market certifications are confirmed per project. Request a mobility-pack quotation with target capacity and volume.

Alternator & Solar Charging Architecture

24V mobile systems typically charge from three sources. Getting the architecture right matters more than the battery brand:

Alternator (driving): DC-DC charger with lithium profile, ignition-triggered. Never connect lithium directly to the alternator — the low internal resistance can overload it.
Solar (parked): MPPT controller with 24V lithium profile; 400–1200W of roof or portable panels depending on the model.
Shore power (camped): 24V lithium-profile AC charger, 20–50A.
Priority logic: most systems charge from solar first, alternator second, shore third — configured in the chargers, not the battery.
Battery protect: a programmable disconnect between battery and DC loads prevents over-discharge when the BMS is not the last line of defense — belt and suspenders for expensive installations.

Dealers who sell the charging architecture — not just the battery — own the installation and the follow-on service revenue.

Warranty & Support Expectations

Professional buyers evaluate the warranty process, not just the warranty period:

Warranty basis: confirm whether coverage is cycle-count-based or calendar-based, and the depth of discharge the cycle rating assumes. A cycle rating at 80% DoD differs materially from one at 100% DoD.
Cross-border claims: agree in writing how defective units are handled across the China–buyer distance — advance replacement, BMS-only replacement, or return-to-factory — before volume orders.
DOA policy: dead-on-arrival handling and the post-delivery inspection window.
Technical support: response times for commissioning questions, BMS configuration help, and troubleshooting during installation season — when your installers need answers, not tickets.

LJY Energy confirms warranty terms, claim procedures, and support scope per project in the quotation — never as a vague website promise.

Frequently Asked Questions

Should I choose 24V or stay with 12V?

Above ~3kW of inverter load or ~5kWh of storage, 24V halves current, cable size, and voltage drop. If your RV, boat, or truck already runs 24V natively, the choice is made. For smaller systems, 12V remains simpler and cheaper.

Can I series-connect two 12V batteries instead?

Yes, but a purpose-built 24V battery has one BMS managing all 8 cells — better balance, single-point monitoring, and cleaner wiring than two 12V batteries in series with independent BMS units.

What inverter and solar controller voltages do I need?

24V nominal inverters and MPPT controllers accept the 25.6V nominal / 29.2V charge profile. Most 24V equipment is designed with this range in mind — confirm the input voltage window in the manual.

Do you support private-label orders?

Yes — OEM programs cover one model or the full series with consistent branding. Specifications and terms are confirmed per project — request a quotation.