eFlex MAX 5.4 kWh LFP Battery – High-Performance Lithium Storage with Maximum Longevity
The eFlex MAX 5.4 kWh LFP Battery delivers exceptional energy storage with premium performance, safety, and flexibility. Engineered for residential, commercial, off-grid, and marine use, this next-generation lithium iron phosphate (LiFePO4) battery offers 8000+ cycles and 99% round-trip efficiency, all within a durable, saltwater-resistant aluminum enclosure. It's the ideal choice for anyone seeking long-lasting power and smart scalability.
Key Features:
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8000+ Cycles, 10-Year Warranty – Built to last over a decade with consistent deep-cycle performance.
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Premium Aluminum Enclosure – Patented ¾″ saltwater-resistant casing ensures rugged durability for indoor or outdoor installation.
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Industry-Leading Thermal Management – Up to 3X better thermal regulation than competitors for improved safety and lifespan.
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99% Efficiency & 2W Idle Power – Minimizes standby power loss, saving more energy in off-grid and backup systems.
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Seamless Scalability – Built-in busbars support parallel connections of multiple units, enabling higher capacity and fewer installation errors.
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Flexible Mounting Options – Install on walls or floors with included waterproof front panel, no external conduit required.
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Versatile Applications – Perfect for homes, condos, off-grid cabins, RVs, boats, and solar energy systems.
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Best-in-Class Value – Combining top-tier performance, long life, and affordability for the best total cost of ownership in its class.
What's Included
| Part | Description | Qty |
| 1 | eFlex MAX 5.4kWh | 1 |
| 2 | 1¼ -Inch Threaded Conduit Fitting | 1 |
| 3 | Busbar Top Cover | 1 |
| 4 | Top eFlex MAX Cover | 1 |
| 5 | Wall Mount Bracket | 1 Pair |
| 6 | Manual | 1 |
| 7 | Busbar (300A) | 1 Pair |
| 8 | Busbar Bottom Cover | 1 |
| 9 | Wall Mount template | 1 |
| 10 | Floor Mount Bracket | 1 Pair |
| 11 | Back Support | 1 |
| 12 | 2-Way RJ45 Splitter | 1 |
| 13 | ENVY & Sol-Ark Battery-Inverter COMM Cable (2 ft.) | 2 |
| 14 | IP65 Battery-Inverter Comm Cable (9.8ft.) | 1 |
| 15 | IP65 Battery-Battery Comm Cable (1.15ft.) | 1 |
| A | M4 * 8 Stainless Steel Cross Recessed Countersunk Head Screw | 2 |
| B | M4 * 6 Stainless Steel Cross Pan Head Screw | 5+1 |
| C | M8 * 16 Combination Cross Groove Recessed Hexagonal Head Bolt | 4 |
| D | M4*25 Hexagonal Socket Head Cap Screw | 3 |
| E | M6 * 20 European Standard 30, T-bolt & M6 Flange Nut | 6+1extra |
| f | M8*60 Expansion Screw | 4 |
| G | M6*50 Wood Screw | 4 |
Specification
| General | |
| Name | eFlex MAX 5.4 |
| Total Energy(kWh) | 5.4 |
| Max. Charge Current (Continuous) [A] | 100 |
| Max. Discharge Current (Continuous) [A] | 100 |
| Nominal Capacity [Ah] | 105 |
| Voltage Range [V] | 48-55 |
| Charging Temperature [F] | 32 ~ 114 |
| Discharging Temperature [F] | -4 ~ 131 |
| Storage Temperature [F] | 20 ~ 95 |
| Dimension [L x W x H, inch] | 17.5 x 24.2 x 7.2 |
| Weight [lbs] | 108 |
| Life Cycles | 8000 @ 80% DoD |
| Round Trip Efficiency | >98% |
Manuals and Downloads
eFlex MAX Owner / Installation Manual
Certification
Why Shop With Us?
Fast & Free Shipping
Enjoy free, fast delivery on all orders. Your products will be dispatched within 48 hours.
30-Day Guarantee
Not satisfied? We offer a hassle-free 30-day money-back guarantee on all our products.
Guaranteed Purity & Performance
We provide certified gas with 99.9% minimum purity, preventing system contamination and ensuring optimal HVAC function.