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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
| MODEL | SPI-10K-H3P | SPI-12K-H3P | Can Be Set |
| INVERTER OUTPUT | |||
| Rated Output Power | 10,000W | 12,000W | |
| Max.Peak Power | 20,000W | 24,000W | |
| Rated Output Voltage | 400Vac, three-phase | √ | |
| Capacity of Motor Load | 6HP | 6HP | |
| Rated Frequency | 60Hz | √ | |
| Output Waveform | pure sine wave | ||
| Switching Time | 10ms (typical) | ||
| BATTERY | |||
| Battery Types | Li-ion /Lead-Acid /User Defined | √ | |
| Rated Battery Voltage | 48Vdc | ||
| Voltage Range | 40~60Vdc |
√ |
|
| Max.PV Charging Current | 220A | 260A |
√ |
| Max.Utility /Generator Charging Current | 120A | 120A | √ |
| Max.Hybrid Charging Current | 220A | 260A | √ |
| PV INPUT | |||
| No.of MPPT | 2 | ||
| Max.Input Power | 7,500W/7,500W | 9,000W/9,000W | |
| Max.Input Current | 22A/22A | ||
| Max.Open-circuit Voltage | 800Vdc/800Vdc | ||
| MPPT Operating Voltage Range | 200~650Vdc/200~650Vdc | ||
| UTILITY /GENERATOR INPUT | |||
| Input Voltage Range | phase voltage 170~280V,line voltage 305~485V | ||
| Input Frequency Range | 50/60Hz | ||
| Bypass Overload Current | 63A | ||
| EFFICIENCY | |||
| MPPT Tracking Effciency | 99.9% | ||
| Max.Battery Inverter Effciency | ≥92% | ||
| European Efficiency | 97.5% | 97.5% | |
| GENERAL | |||
| Dimensions | 620*445*130mm | ||
| Weight | 27kg | ||
| Protection Degree | IP20,indoor only | ||
| Ambient Temp | -10~55℃,>45℃ derated | ||
| Noise | <60dB | ||
| Cooling Method | air cooling | ||
| Warranty | 18 months | ||
| COMMUNICATION | |||
| Internal Interface | RS485/CAN/USB /Dry contact | √ | |
| External Module (optional) | Wi-Fi/GPRS | √ | |
| CERTIFICATION | |||
| Safety | IEC62109-1,IEC62109-2,UL1741 | ||
| EMC | EN61000-6-1,EN61000-6-3,FCC15 classB | ||
| RoHS | Yes | ||




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⭐⭐⭐⭐⭐ Review Great supplier! Excellent support and very fast delivery from the EU warehouse. The battery cells arrived in perfect condition, well packed, and the quality is top-level (A-grade). Communication was clear and professional the whole time. Highly recommended!
hese are really excellent and of the highest quality, highly recommended, and do not become unbalanced even when charging if they exceed 120/130Ah.
Excellent batteries, all perfect in terms of weight and current capacity.
good service, i had a littble problem with the address, seller helped me to solve. finished the install 2 days ago, everything ok
swietne ogniwa pojemnosć zmiezona 685.55ah fajne busbary elastyczne ogniwa proste