12V 400Ah LiFePO4 Battery, High-Capacity 5120Wh Deep Cycle Power, Advanced 200A BMS, for Reliable Solar, RV, and Off-Grid Energy Storage Solutions

Price: $299.99 - $607.73
(as of Feb 09, 2026 17:16:38 UTC – Details)

From the brand

About Dumfume

Dumfume: Iron-Clad Commitment. Green Energy. Wonderful Living.

In the tide of energy innovation, Dumfume Dumfume specializes in lithium iron phosphate (LiFePO4) batteries. “Improving Lives” is our ultimate vision. Dumfume believes technology’s value lies in serving humanity and creating a brighter life. Our efficient, safe, and long-lasting LiFePO4 batteries are quietly integrating into every facet of living.

LiFePO4 Battery 12V

LiFePO4 Battery

12V LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery

LiFePO4 Battery Charger

LiFePO4 Battery and Charger

About Dumfume

How safe are Dumfume LiFePO4 batteries?

Our batteries feature built-in BMS protection against overcharge/over-discharge, short circuits, and overheating. With flame-retardant casing and stable LiFePO4 chemistry, they meet certifications. Dumfume Support Team responds 24/7 if you have safety concerns.

What voltage options do you offer?

From 12V to 48V modular system，Consult Dumfume 24/7 for compatibility verification.

【Massive 5120Wh Energy Reserve】Experience unparalleled runtime with this high-capacity 12 volt lithium battery 400ah. It stores a massive 5120Wh of energy, providing sustained power for demanding applications like off-grid homes, and large RVs. This dumfume 400ah lithium battery is engineered for long-term, reliable performance where it matters most.Battery performance requires temperatures of 5°C or higher. Please verify suitability before purchase. Return shipping for low-temperature charging issues is not covered.
【Military-Grade Safety & 200A BMS】Engineered for absolute safety, this 400ah lifepo4 battery features a sophisticated 200A BMS with multi-layered protection against overcharge, over-discharge, and short circuits. Built with UL-certified components and a rugged, impact-resistant casing, the dumfume 400ah ensures secure operation in the most challenging environments, giving you complete peace of mind.
【Effortless Scalability for 48V Systems】This dumfume 12.8v 400ah lithium battery is designed for growth. Seamlessly connect up to 4 units to build a powerful 48V system, perfect for whole-home backup or large-scale solar installations. Its modular design makes the dumfume lithium battery an ideal, future-proof choice for expanding your energy independence.
【Rugged & Certified Reliability】Don’t compromise on build quality. This dumfume lithium battery 12v is constructed with high-grade, impact-resistant materials and meets stringent international standards. It’s built to withstand vibration, variable weather, and harsh conditions, making this 400ah lifepo4 a dependable cornerstone of your energy system for years to come.
【Optimized Physical Design & Support】Balancing immense power with manageable logistics, this 12v 400ah lithium iron phosphate battery features a thoughtfully designed form factor for easier installation and handling. As with all premium lithium ion rechargeable batteries 400ah, we recommend periodic maintenance charging during storage. Our support team is ready to assist you.