Qidianfy 12V 300Ah LiFePO4 Lithium Battery

$339.00 USD

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Large Energy Storage: 3840Wh high-capacity power for RVs, solar systems, marine use, cabins, and home backup.
Advanced Battery Protection: Built-in 200A Smart BMS safeguards against overcharge, overheating, short circuit, and over-discharge.
EV-Grade LiFePO4 Cells: Delivers stable deep-cycle performance with longer lifespan and better reliability than lead-acid batteries.

Expandable Power System: Supports 4P4S expansion to build up to a 51.2V 1200Ah energy storage setup.
Compact & Lightweight: Higher energy density design makes installation easier while saving valuable space.
Fast & Flexible Charging: Recharge quickly via solar panels, LiFePO4 chargers, generators, or alternators.
Durable Outdoor Housing: Tough ABS casing delivers reliable performance in outdoor and harsh environments.
Ready for Any Adventure: Perfect for RVs, campers, boats, off-grid systems, cabins, and emergency backup power.

5 Years Warranty at Qidianfy.com

5 Years Warranty

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TOP EV-GRADE LiFePO4 CELLS

Qidianfy's EV-grade LiFePO4 battery cells offers significant advantages over pouch cells. These cells are designed to handle surge currents without overheating, ensuring safety and reliability. With over 4000 deep cycles at 100% depth of discharge, they maintain high performance and longevity, making them an ideal choice for marine fishing electronics (fish finder, electric fishing reels, etc. ), and RVs applications.

Low-Temp Cut-off Protection

Qidianfy 12V 300Ah Group 24 Smart LiFePO4 battery with low-temp charging cut-off protection can intelligently cut off charging at ＜0℃ and stop discharging at ＜ -20℃, effortlessly protecting your battery.

Mighty Energy, Minimal Size

Sizing L10.24 * W6.61 * H8.30 inch, it is equivalent to group 24 battery size and saves up to 25% space than 12V 300Ah lead-acid battery, but releases 200% energy.

Self-Developed BMS

The reinforced 200A BMS safeguards the battery from overcharging, over-discharging, over-current, overheating, low-temperature and short circuits. Plus, the all-round upgraded self-developed BMS offer more 20+ protections and functions that include moisture-proof, salt spray resistance, low-temp cut-off protection, 30s self-recovery after overload protection, and pre-charge function.

Keep all your gear charged, so the outdoor fun never stops.

Power your cabin, workshop, and more – quietly and efficiently.

Ensure uninterrupted convenience at just a moment's notice.

Why Choose Our Batteries?

We deliver full peace of mind with certified safety, cost-saving performance, and a 5-year warranty. Fast free shipping available via local warehouses in the US, Canada, Australia and Germany, covering most countries across North America and Europe.

SPECS

BATTERY

Cell Type：LiFePO4

Warranty：5 Years

Cycle Life：≥4000 Cycles at 100% DOD

Nominal Voltage：12.8V

Rated Capacity：300Ah

Energy：3840Wh

Max. Expansion：4P4S

Certifications：UN38.3, FCC, CE, RoHS, UL

Bluetooth：/

Self-Heating：/

BMS

BMS：200A

Max. Continuous Output Power：3840W

Max. Continuous Charge Current：100A

Max. Continuous Discharge Current：200A

Peak Discharge Current：240A

CHARGE

Charge Method：CC/CV

Charge Voltage：14.4V ± 0.2V

TEMPERATURE

Charge Temperature：32°F ~ 113°F / 0°C ~ 45°C

Discharge Temperature：14°F ~ 140°F / -10°C ~ 60°C

Storage Temperature：-4°F ~ 113°F / -20°C ~ 45°C

OTHERS

Product Size：L20.55*W9.45*H8.58 in / 52.20*24.00*21.79 cm

Approx. Weight：61.72 lbs / 28 kg

Terminals：M8 Brass

Housing Material：ABS

Protection：IP65 / Sealed Waterproof

FAQ

Yes. Our 12V 300Ah LiFePO4 batteries support up to 4 in series (4S) to build 24V, 36V, or 48V systems, or 4 in parallel (4P) to expand capacity up to 1200Ah. For best results, always use batteries of the same model, age, and state of charge.
Yes, it is compatible with solar charging systems for home backup, RV, van life, camping, and off-grid energy storage.
Yes. The battery has an IP65 waterproof rating and a built-in 200A BMS that protects against overcharge, over-discharge, overcurrent, short circuit, and extreme temperatures. It’s reliable for marine, RV, solar storage, and off-grid use.
The 12V 300Ah LiFePO4 battery delivers 4,000+ cycles at 100% DOD, depending on usage and conditions. This translates to a service life far longer than traditional lead-acid batteries.
With a dedicated 100A fast charger, this battery can be fully charged in approximately 3 hours (from 0% to 100% at room temperature). Actual time may vary slightly based on initial charge level and ambient conditions.
Store the battery at 30%-50% charge in a cool, dry place. We recommend charging it every 6 months when not in use to prevent over-discharge and maintain optimal performance.

Qidianfy 12V 300Ah LiFePO4 Lithium Battery