The 5 Best 280Ah LiFePO4 Batteries of 2025 — Long Life, High Output, and Safe Power

We’ve tested dozens of 280Ah LiFePO4 options to find five that truly balance lifespan, output, and safety for off‑grid, marine, and RV power. From drop‑in 12V packs with 200A BMS to matched 3.2V cells for custom banks, our picks emphasize reliable cycle life, cold‑weather protection, and clean integration with inverters and MPPTs. We’ll outline what stands out, what to watch, and where each shines—so you can avoid costly missteps.

Key Takeaways

• LiTime 12V 300Ah LiFePO4: 3,840Wh, 200A BMS, 2,560W continuous, 4P4S to 61.44kWh; reliable UL-certified protection, 60.8 lb.
• LiTime 12V 280Ah: 3,584Wh, 200A BMS, 4,000+ cycles at 100% DoD, cold-charge protection, 59.2 lb; broad RV, marine, solar compatibility.
• OGRPHY 12V 280Ah: 3,584Wh, 200A continuous/600A peak, 100A charge, scalable to 57.34kWh; strong value with CE/FCC/RoHS certifications.
• QTQ 3.2V 280Ah Cells (4-pack): Grade A+ prismatic cells with busbars; 5,000-cycle life, flexible DIY 12V–48V builds; requires external BMS.
• Matched 280Ah cell kits: Tight voltage/IR matching, low self-discharge, robust aluminum cases; ideal for balanced, long-life custom banks.

LiTime 12V 300Ah LiFePO4 Battery with 200A BMS

If you need big off-grid capacity with stout protection in a manageable package, LiTime’s 12V 300Ah LiFePO4 with a UL‑certified 200A BMS stands out. We like its 3,840Wh energy, 2,560W load power, and 60.8 lb weight—about a third of comparable lead-acid. Expect 4,000+ deep cycles and up to a 10‑year life, with Grade A cells and UL/CE/FCC certifications.

It scales cleanly: up to 4P4S for 40.96kW and 61.44kWh. Installation’s straightforward with M8 terminals; pair with a quality inverter, MPPT, and shunt. Don’t use it as a starter battery. Mind cold‑charge limits, balance after series connections, and set proper charging profiles.

Best For: Off-grid homeowners, RV/van lifers, and solar backup users who need high-capacity 12V power with robust protection, long cycle life, and scalable configurations.

Pros:

• 3,840Wh capacity with 200A UL-certified BMS delivers strong 12V performance and 2,560W continuous load
• 4,000+ deep cycles, lightweight (60.8 lb), and Grade A LiFePO4 cells with UL/CE/FCC certifications
• Scales up to 4P4S for 40.96kW/61.44kWh; straightforward M8 terminal installation and broad system compatibility

Cons:

• Not suitable as a starter battery (cranking applications)
• Requires attention to cold-charge limits and proper charging profiles
• Initial balancing needed in series setups; may ship at a low state of charge

QTQ 3.2V 280Ah LiFePO4 Battery Cells (4 Pack)

QTQ’s 3.2V 280Ah LiFePO4 prismatic cells stand out for builders who want Grade A+ cells with verified safety and long life in a DIY pack. This 4-pack (model 4DX32280) includes four cells, four busbars, and four screws, letting us assemble compact banks thanks to rigid aluminum cases and flexible prismatic layout. Each 11.57 lb cell measures 8.03 x 2.8 x 6.81 inches and must run with a BMS. We like the built-in safety valve, low self-discharge, and testing against seven damage types. Expect 5,000 cycles and a 10-year lifespan. Ideal for solar, RVs, marine, off-grid, UPS, and backup systems.

Best For: DIY builders and off-grid enthusiasts who need Grade A+ LiFePO4 prismatic cells for reliable, long-life energy storage in solar, RV, marine, or backup power systems.

Pros:

• Grade A+ LiFePO4 prismatic cells with high energy density, 5,000 cycles, and ~10-year lifespan
• Built-in safety valve, rigid aluminum case, and testing against seven damage types for enhanced safety
• Flexible installation with included busbars/screws; low self-discharge for extended storage

Cons:

• Requires a BMS at all times, adding cost and setup complexity
• Four “nonstandard” cells may need custom wiring/assembly compared to drop-in 12V batteries
• Date first available is recent, so long-term real-world reviews and availability may be limited

Litime 12V 280Ah LiFePO4 Deep Cycle Battery with 200A BMS

Serious boaters and off‑grid RV owners who need sustained high output will appreciate Litime’s 12V 280Ah LiFePO4 with a robust 200A BMS and 3,584Wh of energy. We get 12V deep‑cycle power in a 59.2‑lb package using four EV‑grade cells and marine terminals. It supports 4P4S expansion to 48V 1120Ah for up to 57.34 kWh and 40.96 kW loads. Protections include low‑temp charge cutoff at 0°C, discharge cutoff at −20°C, plus dust, water, and salt‑spray defense. Expect 4,000+ cycles at 100% DOD, 10+ years, and just 3% monthly self‑discharge. It’s ideal for 30–70 lb trolling motors, RV, marine, solar, UPS.

Best For: Serious boaters, off-grid RV owners, and home backup/solar users needing high-output, long-life 12V power with low-temperature protection and scalable capacity.

Pros:

• 3,584 Wh capacity with 200A BMS supports heavy loads; expandable to 48V 1120Ah (up to 57.34 kWh, 40.96 kW).
• Long lifespan: EV-grade cells, 4000+ cycles at 100% DOD, 10+ years; low 3% monthly self-discharge.
• Lightweight for its class (59.2 lbs), marine terminals, wide compatibility (trolling motors 30–70 lb, RV, solar, UPS).

Cons:

• Charging disabled below 0°C (32°F) and discharging below −20°C (−4°F) may limit extreme-cold use.
• Higher upfront cost vs. lead-acid despite long-term value.
• Large physical size may require ample installation space and careful parallel/series planning.

LiFePO4 3584Wh 280Ah Lithium Battery with 200A BMS (Grade A)

Looking for a 12V workhorse that pushes 200A continuous with Grade A cells? We like this 3584Wh, 280Ah LiFePO4 pack (OGRPHY) with a robust 200A BMS and 600A peak for 5–10 seconds. It weighs 61.7 lbs, measures 20.5 x 9.5 x 8.6 in, and charges at up to 100A to 14.4±0.2V. Expect 2000–5000 cycles, CE/FCC/RoHS certifications, and a 5-year warranty.

It scales cleanly: up to 4P4S for 48V, 1120Ah, 57.34kWh. Balance in parallel first; keep series voltage within 30 mV. Safe, non-acid design; BMS shields over-discharge/current. Note cold limits—use external power for heating. Great value versus 200Ah/300Ah alternatives.

Best For: Off-grid systems, RVs, golf carts, and backup power users who need a 12V, 200A continuous LiFePO4 workhorse with scalable capacity and long cycle life.

Pros:

• 200A continuous (600A peak 5–10s) with Grade A cells and robust BMS for high-demand loads
• Scales up to 4P4S (48V, 1120Ah, 57.34kWh); lighter than lead-acid for easier installs
• Long 2000–5000 cycle life, CE/FCC/RoHS certified, 5-year warranty, and up to 100A charging

Cons:

• Cold-weather charging limits (0°C/32°F minimum) and heater requires external power
• Requires careful balancing: parallel first, series within 30 mV; may be complex for beginners
• Heavier and larger than smaller-capacity LiFePO4 options (61.7 lbs; 20.5 x 9.5 x 8.6 in)

4-Pack 3.2V 280Ah LiFePO4 Battery Cells with Nuts and Bus Bars

DIY builders who want flexibility without paying for extras will appreciate this 4-pack of 3.2V 280Ah LiFePO4 cells that ships with matched bus bars and M6 nuts. We like that TWV’s A+ grade cells pass tight voltage and IR matching for balanced packs and reliable performance. Each cell weighs 11.57 lbs and measures 2.8 x 6.81 x 8.03 inches, with a working range of 2.5–3.65V and cycle life rated ≥1000 at 25°C. Configure in series or parallel to build 12V–48V banks for solar, RV, marine, or backup use. Note there’s no BMS included—plan a proper LiFePO4 BMS. Amazon-backed returns add reassurance.

Best For: DIY builders and off-grid users who want flexible, high-capacity LiFePO4 cells for custom 12V–48V battery banks without paying for a prebuilt pack.

Pros:

• A+ grade cells with tight voltage/internal resistance matching for balanced performance
• Includes bus bars and M6 nuts for straightforward series/parallel assembly
• Wide applicability (solar, RV, marine, backup) with ≥1000 cycle life at 25°C

Cons:

• No BMS included; requires selecting and installing a suitable LiFePO4 BMS
• Individual cell format demands careful assembly and safety practices
• Cycle life spec is modest compared to some higher-rated LiFePO4 offerings

Factors to Consider When Choosing 280AH Lifepo4 Batteries

Before we pick a 280Ah LiFePO4 battery, we’ll check the cell chemistry quality and confirm the true usable capacity, not just the label. We’ll compare cycle life ratings and ensure the BMS includes robust protections like over/under-voltage, overcurrent, short-circuit, and temperature safeguards. If we plan to charge in the cold, we’ll also weigh low-temperature performance and any built-in heating.

Battery Chemistry Quality

Even with matching specs on paper, chemistry quality separates a solid 280Ah LiFePO4 pack from a headache. We look for Grade A cells because they deliver consistent cycle life—often 2,000–5,000+ cycles depending on depth of discharge and conditions. EV-grade cells go further, tightening tolerances for safety and lower failure rates over years of use.

A well-matched BMS matters just as much. For 280Ah packs, a robust 200A BMS protects against overcharge, over‑discharge, over‑current, and shorts, keeping the cells in their safe operating window. Cell format and resistance also tell us a lot: prismatic designs simplify interconnections, while low internal resistance (around 10–40 mΩ per pack) reduces heat and losses. Finally, temperature behavior and charge acceptance—especially around 0°C—directly affect reliability and longevity.

True Usable Capacity

Solid chemistry gets you longevity, but what we can actually use day to day comes down to true usable capacity. Nominal 280Ah isn’t what we’ll reliably pull; it’s the ceiling. Usable capacity depends on depth-of-discharge settings and the BMS. At a typical 80–90% DoD, we should expect about 224–252Ah. In a 12V setup, that’s roughly 2.8–3.2 kWh. Some listings quote 3584–3840Wh total; that reflects nominal voltage differences (about 12–12.8V) and still needs DoD applied to estimate what we’ll get.

BMS behavior matters. Aggressive current limits or conservative low/high-voltage cutoffs can reduce effective capacity, especially during heavy loads or cold charging. In series/parallel builds, total energy sums across cells, but usable output still hinges on system DoD and inverter/charger limits.

Cycle Life Rating

How long will a 280Ah LiFePO4 pack really last? Cycle life ratings give us the clearest window. Most reputable 280Ah cells land between about 2000 and 5000+ cycles, depending on depth of discharge (DOD) and how we operate them. Premium options often claim 4000+ cycles at 100% DOD, signaling strong durability even under full-depth cycling. Many manufacturers benchmark 2000–5000 cycles with a 10-year potential lifespan when we stay within recommended temperature and state-of-charge ranges.

BMS Protection Features

Two things separate a great 280Ah LiFePO4 battery from an average one: its BMS depth and execution. We look for a robust built‑in BMS—typically around 200A—that enforces overcharge, over‑discharge, over‑current, and short‑circuit protections. That’s what keeps a big pack safe and healthy. High-output users should verify continuous current ratings and transient headroom; some packs deliver 200A continuous with peaks to 600A without tripping protections.

We also value BMSs with environmental defenses—conformal coating, sealed enclosures, and resistance to dust, water, and salt spray—for marine, off‑grid, or vehicle installs. If you’ll wire multiple packs (say, 4P4S), insist on smart cell balancing. A well-tuned balancing strategy preserves uniform cell voltages, prevents drift, and extends service life across the entire bank.

Low-Temperature Performance

When cold creeps in, low‑temperature behavior can make or break a 280Ah LiFePO4 pick. We need a pack that protects itself without stranding us. Most 280Ah units halt charging below 0°C (32°F) to safeguard the chemistry, and they shut down discharge around -20°C (-4°F). That’s good for longevity, but it limits usable capacity in deep cold.

Look for a BMS with explicit low‑temperature protection and reliable thermal monitoring. These safeguards prevent damage and extend cycle life when paired with proper cold‑weather practices. If we operate in sub‑freezing climates, consider models with integrated heaters or plan for external heat or shore power to enable safe charging. We should match our environment to the battery’s temperature specs to ensure dependable winter performance and lifespan.

Scalability and Configuration

Curiously, scalability can turn a single 12V 280Ah LiFePO4 pack into a backbone for 24V, 36V, or 48V systems without complexity. We scale voltage by wiring packs in series and boost capacity by wiring them in parallel—classic 4S for 12V blocks and up to 4P4S for large banks. A 4P4S configuration reaches 48V and 1120Ah, delivering about 57.34 kWh.

Before paralleling, we balance each pack and confirm voltages match closely; keep differences under roughly 30 mV. Then we connect series links, ensuring balanced state of charge across strings. We prefer modular packs with M8 terminals and bus bars for clean expansion. Just match the BMS to the total current—200A or higher for bigger arrays—and coordinate BMS units to maintain safe operation.

Weight and Dimensions

After planning how packs scale in series and parallel, we have to account for the physical reality: a typical 12V 280Ah LiFePO4 module weighs around 59–62 pounds and measures roughly 20.5 x 9.5 x 8.5 inches. That’s the baseline for cabinet layouts, slide-outs, or under-seat installs.

Most 280Ah units use prismatic cells, so footprints are similar and weights cluster near 60 pounds. When we stack modules—say a 4P4S bank—we should map total length, airflow gaps, and service clearance. Mounting rails and cable routes can add inches, especially at the ends.

Don’t forget terminal hardware. Marine-style M8 posts and bus bars can raise effective height and change wrench access. We’ll verify lid clearance, strain relief, and lift paths before committing the enclosure.

Certifications and Warranty

So how do we separate solid 280Ah LiFePO4 batteries from risky bets? We start by confirming third‑party certifications. UL is the gold standard for safety; CE and FCC indicate compliance for the EU and electromagnetic emissions. If a pack lacks these, we move on.

Next, we scrutinize the warranty. A clear 5‑year term that names covered components—cells, BMS, and accessories—beats vague promises. We also check cycle life claims in real‑use terms: 2000–5000 cycles at the stated depth of discharge, not idealized lab numbers.

Because protection electronics matter, we verify whether a BMS is included or if an external unit is required. Finally, we review the seller’s return window (ideally 30 days) and test their after‑sales support for responsive warranty handling.

Conclusion

We’ve surveyed standout 280Ah LiFePO4 options that deliver lasting life, hearty headroom, and steadfast safety. Whether we’re powering cabins, cruising in campers, or sailing seas, these batteries bring cool-running chemistry, crisp current, and confident control. Pair solid BMS protection with proper inverters and MPPTs, and we’ll see smooth starts, strong cycles, and smart scalability. Choose durable enclosures, trusted cells, and proven thermal management. Do that, and we’ll enjoy dependable, dense, and drama-free power for years to come.