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.
BetterESS 48V 51.2V 300Ah 15kWh All-in-one battery built-in 5KW inverter with active balancer module and lifepo4 temperature-sensitive fire extinguisher; Battery and inverter integrated into one, easy to install, plug and play.
BetterESS 15Kwh All-in-one battery built-in 5KW inverter, it can connect all in one battery of the same model to form three phases system or just to expand capacity; It can also connect 15KWH battery (without inverter) to expand capacity,but the battery model must be the same.
BetterESS 15Kwh All-in-one ESS perfect for solar home systems, power outages, off-grid living.
• 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 circuit.
• 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.
1. Do not charge beyond the maximum charging rate.
2. Do not disassemble or modify the battery.
3. Do not throw or hit the battery.
4. Do not pierce the battery with sharp objects (such as nails, knives, pens, electric drills).
5. Do not mix with other types of batteries or modular units.
6. Do not excessively squeeze the battery during use.
7. Do not place the battery in a high temperature greater than 60°C.
8. Do not use conductive materials to connect the positive and negative terminals (such as metals, wires)
Specifications | BE-AO-MB-48300-5KW | BE-AO-MB-51300-5KW |
---|---|---|
Nominal voltage | 48V (15S) | 51.2V (16S) |
Nominal capacity | 300Ah | 300Ah |
Battery power | 14400Wh | 15360Wh |
Maximum Charging Current | 100A | |
Maximum Discharging Current | 100A | |
Internal resistance | ≤100mΩ | |
Cycle life | 6000+ Cycles @ 0.2C Charging/Discharging at 90%DOD, Until 70% Capacity. | |
Self-discharge | ≤3.5% (every month @ 25°C) | |
Battery Working Voltage Range | 44.8~57.6V | |
Charging temperature | 0°C to 45°C | |
Discharge temperature | -10°C to 45°C | |
Shell material | SPCC | |
Dimension L × D × H | 1005 × 450 × 300mm | |
Weight | 140KG | |
Communication Ports | RS485/CAN*1 | |
Dustproof and waterproof rating | IP20 | |
Warranty | 10 years Life, 5 years Warranty | |
Battery Inverter Output | ||
Rated Output Power | 5500VA | |
Maximum Peak Power | 11000VA | |
Rated Output Voltage | 230Vac | |
Frequency | 50Hz | |
PV Charge | ||
Solar Charge Type | MPPT | |
Max. Output Power | 5500W | |
PV Charging Current Range | 0〜100A | |
PV Operating Voltage Range | 120〜500V | |
MPPT Voltage Range | 120〜450V | |
AC Charge | ||
Max. Charge Power | 3150W | |
Maximum charge current (can be set) | 60A | |
Rated Input Voltage | 220/230Vac | |
Input Voltage Range | (170Vac~280Vac) ±2% / (90Vac-280Vac) ±2% |
Thanks for subscribing!
This email has been registered!
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