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We offer FREE shipping on all orders to most countries and regions.
Orders shipped from the EU warehouse: Free shipping is available to mainland EU countries (excluding remote islands).
Orders shipped from China: Free shipping is available to the EU, US, and other major regions (excluding remote islands).
Note: If your shipping address is in the UK, Switzerland, or Norway, and your order is shipped from our European warehouse, additional shipping fees will apply. Any customs duties or taxes incurred for these destinations must also be covered by the customer.
After you place an order, we will process it within 1-2 business days. Depending on your shipping address, we will ship from the nearest warehouse so you can receive your items as soon as possible.
Contact us at service@better-ess.com to check the stock level of your nearest warehouse.
We stand behind the quality and performance of our products through comprehensive warranty coverage.
All LiFePO4 Cells Batteries can receive a 5-year warranty, when used correctly according to the product manual instructions.
Mobile ESS and DIY Case Kit are also warranted for 5 years.
Battery chargers carry a 2-year warranty.
Accessories are covered by a 1-year warranty.
All warranties are effective from the date of purchase by the end user. Correct installation and usage as specified in the product manual are required to maintain warranty eligibility.
Please take time to carefully review the manual prior to setup and operation to ensure proper use and long-lasting performance from your BetterESS LiFePO4 System. We're here to support you throughout the warranty periods.
We provide lifetime customer support to ensure you enjoy a worry-free experience with our products.
Whether you have questions about installation, usage, or maintenance, our dedicated team is always here to help — anytime you need us.
Contact us (Email): service@better-ess.com
The price listed is the final price. Free shipping, Free customs duties and tax, you don't need to pay any other fees.
The Lithium battery LiFePO4 48V 51.2V 300Ah/280Ah 14KWh is Built-in 5KWh inverter, All-in-One Mobile ESS Battery with WIFI for solar system solutions. Long life is guaranteed with 6000+ deep cycles.
√ 100% New Grade A+ Cells
√ Supports up to 14 units in parallel
√ Built-in active balancer module + external physical switch
√ Integrated temperature-sensitive LiFePO4 fire extinguisher
√ Auto-trip protection to prevent electric shock
√ Deep cycle capable, 10+ years lifespan
The BetterEss 48V 280Ah 14kWh All-in-One Mobile ESS is built to grow with your energy demands. It supports parallel connection of up to 14 units of the same model, enabling you to expand capacity with ease. You can also connect it with 15kWh expansion batteries for scalable energy storage.
Note: For optimal performance and compatibility, all parallel-connected units must be of the same brand and purchased from the same supplier.
BetterESS 48V 51.2V 280Ah 14KWh All-in-One Energy Storage System combines a high-efficiency 5KW inverter, an advanced active balancer module, and a built-in LiFePO4 temperature-sensitive fire extinguisher for ultimate safety. Its streamlined integration eliminates complex wiring—simply plug and play for instant power.
Enjoy versatile charging options: harness solar energy, grid power, or both simultaneously for uninterrupted supply.
Equipped with an advanced MPPT charge controller, the BetterESS 14kWh All in One ESS maximizes solar energy efficiency, allowing you to harness the sun’s power like never before.
Whether you’re looking to reduce electricity bills, achieve energy independence, or prepare for power outages, this system offers a sustainable and cost-effective solution.
The BetterESS 14kWh All in On Solar Battery Mobile ESS features a user-friendly plug-and-play design, making installation quick and hassle-free.
Integrated safety mechanisms, including overcharge protection and temperature monitoring, ensure reliable operation and peace of mind. Its durable construction and compact size make it ideal for both indoor and outdoor use.
From home energy backup to off-grid living and outdoor exploration, the BetterESS 14kWh All-in-One ESS adapts to a wide range of scenarios.
With high energy density, long cycle life, and excellent mobility, it’s a reliable and flexible solution for solar storage and portable power needs.
• No matter what the charging model is, once the temperature of the cell is above the absolute charging temperature, charging should be stopped.
• Please check the orientation of the positive and negative terminals before packaging.
• Connect the terminal or wire to the battery module, and pay attention to insulation to prevent short circuits.
• When not in use for a long time, the battery should be stored in a cool and dry place (<35°C, 30%~50% SOC, charge and discharge once every 3 months).
• Do not place the battery in direct sunlight or a heat source.
• Do not wear metal jewelry (such as rings, watches, accessories, etc.) when handling the battery unit.
Do not charge beyond the maximum charging rate.
Do not disassemble or modify the battery.
Do not throw or hit the battery.
Do not pierce the battery with sharp objects (such as nails, knives, pens, or electric drills).
Do not mix with other types of batteries or modular units.
Do not excessively squeeze the battery during use.
Do not place the battery in a high temperature greater than 60°C.
Do not use conductive materials to connect the positive and negative terminals (such as metals, and wires).
| (EU Version) Specifications | 15kWh 48V 280Ah All-in-one | 15KWh 51.2V 280Ah All-in-one |
|---|---|---|
| Nominal voltage | 48V(15S) | 51.2V(16S) |
| Nominal capacity | 280Ah (Hithium 280Ah Cells) | 280AH (Hithium 280Ah Cells) |
| Battery power | 13440Wh | 14336Wh |
| Charge | Max 100A | Max 100A |
| Discharge | Max 100A | Max 100A |
| Rated Output Voltage (Vac) | 230Vac | 230Vac |
| Fast charging | 3.5 Hours | 3.5 Hours |
| Charging method | Solar panels, Utility grid(230Vac input) | Solar panels, Utility grid(230Vac input) |
| Auto-Balancing | Yes | Yes |
| Fire Extinguisher Function | Built-in | Built-in |
| Internal resistance | ≤100mΩ | ≤100mΩ |
| Cycle life | 6000+ Cycles @ 0.2C Charging/Discharging at 90%DOD, Until 70% Capacity. | 6000+ Cycles @ 0.2C Charging/Discharging at 90%DOD, Until 70% Capacity. |
| Self-discharge | ≤3.5%（every month@25°C） | ≤3.5%（every month@25°C） |
| Charging voltage | 48~54.75V | 51.2-58.4V |
| Charging cut-off voltage | 54.75V | 58.4V |
| Standard discharge current | 50A | 50A |
| Maximum sustained discharge | 100A | 100A |
| Maximum pulse current | 150A（＜30S） | 150A（＜30S） |
| Standard charging current | 50A | 50A |
| Maximum continuous charging current | 100A | 100A |
| Maximum discharge power | 5000W | 5000W |
| Charging temperature | 0°C to 45°C | 0°C to 45°C |
| Discharge temperature | -20°C to 60°C | -20°C to 60°C |
| Shell material | SPCC | SPCC |
| Dimension L×D×H | 1005×450×300mm | 1005×520×300mm |
| Weight | 169KG | 174KG |
| Communication Ports | RS485/CAN*1 | RS485/CAN*1 |
| Connection port | M8*9 | M8*9 |
| Dustproof and waterproof rating | IP45 | IP45 |
| Warranty | More than 10 years Life, 5 years Warranty | More than 10 years Life, 5 years Warranty |
| Battery Inverter Output | ||
| Rated Output Power | 5500W | 5500W |
| Rated Output Voltage | 230Vac | 230Vac |
| Frequency | 50Hz | 50Hz |
| PV Charge | ||
| Solar Charge Type | MPPT | MPPT |
| Max. Output Power | 6000W | 6000W |
| PV Charging Current Range | 0〜100A | 0〜100A |
| PV Operating Voltage Range | 120〜500V | 120〜500V |
| MPPT Voltage Range | 120〜450V | 120〜450V |
| AC Charge | ||
| Max. Charge Power | 3150W | 3150W |
| AC Charging Current Range | 0〜60A | 0〜60A |
| Rated Input Voltage | 220/230Vac | 220/230Vac |
| Input Voltage Range | (170Vac~280Vac) ±2%/(90Vac-280Vac)±2% | (170Vac~280Vac) ±2%/(90Vac-280Vac)±2% |
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Battery capacity is very large, can reach more than 295ah, after 15 days of transport received the battery is very good, no damage, I am very satisfied
Einfach perfekter Service Von der Bestellung bis zur sehr pünktlichen Auslieferung perfekt. Fragen per Mail werden schnell und höflich beantwortet. Die Qualität der mir gelieferten Zellen ist mehr als gut, wenn noch der wirklich gute Preis berücksichtigt wird, beinahe unglaublich
Happy with purchase and would recommend. Unit arrived a month early (ordered end of march, expected start of june, showed up start of may) though i didn't know it was coming until fedex showed up at my door.
All ok. Equal voltage on all. Batteries are all flat, none of battery is swolen even 1mm.
Schnelle Lieferung, sehr gut verpackt, Kapazität aller Zellen entsprechen den Angaben der mitgelieferten Zertifikate, qualitativ hochwertige Anmutung
