Sako 300W - Unofficial
The Sako Alpha ESS 300W All-In-One Energy Storage System is a compact and versatile power solution featuring pure sine wave output, built-in MPPT solar charger, and programmable supply priority for PV, battery, or grid. It supports mobile charging and DC lamp interface, and is compatible with utility mains or generator input. With integrated 1 kWh or 2 kWh LiFePO₄ battery options, it delivers reliable and efficient backup power for homes, offices, or small applications.
Key Facts
| Category | Portable Inverter |
|---|---|
| Brand | Sako |
| Capacity | 300W |
| Warranty | 12 months |
| Life Cycle | 5000 cycles |
| Backup | 2 hrs |
Features
- Rated AC Output Power: 300W
- Output Voltage Waveform: Pure Sine Wave
- Output Voltage: 185V ~ 230Vac, 50Hz
- Low DC Warning Point: ≤ 3.2Vdc
- Low DC Cut-off Voltage: 2.9Vdc
- Low DC Warning Return Voltage: > 20%
- Charging Power (Utility + Solar): Max. 400W
- Bulk Charging Voltage: 3.6Vdc
- Float Charging Voltage: 3.5Vdc
Product Details
AC Input
Nominal Input Voltage: 230Vac
Low Loss Voltage: 90Vac ±7
Low Loss Return Voltage: 100Vac ±7
High Loss Voltage: 280Vac ±7
High Loss Return Voltage: 270Vac ±7
Max. AC Input Voltage: 300Vac
Nominal Input Frequency: 45~65Hz
AC Charging Power: Max. 300W
Solar Input
Nominal PV Voltage: 30Vdc
PV Array MPPT Voltage Range: 10Vdc ~ 55Vdc
Max. PV Array Open Circuit Voltage: 56Vdc
Solar Charging Power: Max. 300W
Lithium Iron Battery (LiFePO4 – Built-in)
Battery Capacity: 896Wh
Nominal Battery Voltage: 3.2Vdc
Typical Capacity: 280Ah
Max. Charge Current: 130A
Max. Discharge Current: 130A
Operation Voltage Range: 2.9Vdc ~ 3.6Vdc
Operating Temperature: -10°C ~ +50°C
Pure sine wave output
Long Cycle Life – Over 6000+ cycles at 90% DOD 15+ years life design.
- Programmable supply priority for PV, battery or Grid
- Built-in MPPT trackers and enhanced AC & solar charger
- Support mobile phone charging and DC lamp interface
- Compatible to Utility Mains or generator input
- Bulit-in 1KWh and 2KWh LiFePO4 battery
