1. Product Overview & Key Advantages The ESS 300W–1000W All-in-One Portable Energy Storage Series provides reliable, quiet, and eco-friendly off-grid electricity for indoor emergency backup, desktop workstations, outdoor camping, and field operations. Combining a pure sine wave AC inverter, smart MPPT solar charger, and premium prismatic LiFePO4 cells in a single compact desktop tower, it delivers true plug-and-play convenience.
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Intelligent Dual-Source Charging: Connects simultaneously to solar panels and grid power with automatic solar priority charging to maximize renewable energy use.
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Pure Sine Wave Inverter Output: Clean, stable 230Vac electricity (185V–230V, 50Hz) safe for sensitive electronics, CPAP machines, laptops, and small household appliances.
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Comprehensive BMS Safety Protections: Low capacity cutoff (at <10% SOC or <2.9V), automatic overload regulation, short-circuit recovery, and active thermal safeguards (-10°C to 60°C operating window).
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Energy-Saving Auto Shutdown: Automatically enters power-saving mode when no AC load or charge current is detected for 30 minutes.
2. Technical Specifications
| Specification Parameter | ESS 300W Model | ESS 500W Model | ESS 1000W Model |
| Rated AC Output Power | |||
|
300 W |
500 W |
1,000 W |
|
| Output Waveform |
Pure Sine Wave |
Pure Sine Wave |
Pure Sine Wave |
| AC Output Voltage & Frequency |
185 ~ 230 Vac, 50Hz |
185 ~ 230 Vac, 50Hz |
185 ~ 230 Vac, 50Hz |
| Nominal Battery Capacity |
896 Wh |
1,004.8 Wh (~1 kWh) |
2,009.6 Wh (~2 kWh) |
| Battery Chemistry & Spec |
3.2Vdc / 280Ah LiFePO4 |
3.2Vdc / 314Ah LiFePO4 |
3.2Vdc / 314Ah (2P) LiFePO4 |
| Battery Voltage Range |
2.8 Vdc ~ 3.6 Vdc |
2.8 Vdc ~ 3.6 Vdc |
2.8 Vdc ~ 3.6 Vdc |
| Max Continuous Charge/Discharge |
130 A |
130 A |
220 A |
| Max PV Input Power |
300 W |
400 W |
550 W |
| PV MPPT Operating Voltage |
10 ~ 50 Vdc (Start-up: 15Vdc, Max Voc: 55Vdc) |
10 ~ 50 Vdc (Start-up: 15Vdc, Max Voc: 55Vdc) |
10 ~ 50 Vdc (Start-up: 15Vdc, Max Voc: 55Vdc) |
| Max AC Charging Power |
300 W |
500 W |
1,000 W |
| DC Outputs |
USB 5V / 1.5A + DC 12V (5.5×2.1mm, Max 60W) |
USB 5V / 1.5A + DC 12V (5.5×2.1mm, Max 60W) |
USB 5V / 1.5A + DC 12V (5.5×2.1mm, Max 60W) |
| Operating Temperature |
-10°C ~ +50°C (Charging halts at >60°C or <-10°C) |
-10°C ~ +50°C (Charging halts at >60°C or <-10°C) |
-10°C ~ +50°C (Charging halts at >60°C or <-10°C) |
| Dimensions (W × H × D) |
210 × 360 × 156 mm |
210 × 360 × 156 mm |
240 × 360 × 225 mm |
| Net Weight |
10.0 kg |
12.0 kg |
21.0 kg |
| Protection Rating |
IP21 (Indoor / Desktop use) |
IP21 (Indoor / Desktop use) |
IP21 (Indoor / Desktop use) |
3. OEM / ODM & Commercial Customization
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Branding & Enclosure: Front panel logo silk screening, customized metal chassis paint schemes, and private-label packaging box design.
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AC Socket Variations: Universal socket, UK standard, EU Schuko, or US plug panel adaptations.
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Packaging & Export Logistics: Drop-tested reinforced export cartons with fitted EPE foam inserts for global sea, air, and courier shipping.
Need a Custom Quote or Technical Support?
Connect directly with our sales engineering team via WhatsApp for wholesale pricing and OEM/ODM options.
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