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-36% SaleCompact all-in-one energy storage system for reliable home and backup power.
SAKO 300W 314Ah ESS All-In-One Power System is a compact energy storage solution designed for convenient backup power and everyday energy needs. Its all-in-one design combines essential energy storage components into a single system, making installation and operation simple. Ideal for homes, small offices, shops, and backup applications where reliable and convenient power storage is required.
Zener Authenticity Promise: All sitemarks, models, and technical statistics are registered with the factory and verified in our physical laboratory before sale.
Uses 56 high-efficiency HPBC monocrystalline cells producing 21.6% efficiency[1]. Its 17.24V Vmp and 13.06A Imp push higher current into the battery, making daylight charging faster and more effective
Maintenance-free Lithium Iron Phosphate battery chemistry provides over 2,000 charge cycles—lasting 3 to 4 times longer than traditional acid/tubular IPS batteries.
Internal Maximum Power Point Tracking (MPPT) optimizes voltage and current matching, capturing up to 30% more solar energy than basic PWM controllers during hazy or morning hours.
Delivers clean electricity identical to grid power, protecting appliance motors from overheating, reducing fan noise, and ensuring zero interference on TVs or routers.
Charges automatically using sunshine via the 225W LONGi panel during the day, with automatic fallback to utility grid electricity during prolonged rain or monsoons.
Advanced Battery Management System guards against overcharging, deep discharge, high thermal conditions, and short circuits.
Mount the LONGi Horizon 225W panel facing due South at an angle of 20° to 25°. The 17.24V Vmp gives plenty of voltage headroom to push high current into the SAKO ESS even in Bangladesh's hot summer heat
For maximum backup duration (6–8+ hours), run 2 energy-efficient AC/DC fans, 3 LED bulbs, and a Wi-Fi router (total continuous consumption ~80W–110W).
Leave the ESS unit plugged into an AC outlet. The internal system automatically manages battery charging from solar energy when available, prioritizing clean solar power before drawing grid power.
The LONGi Horizon panel features an IP68 junction box and 3.2mm tempered glass built for monsoon rains, while the LiFePO4 battery requires zero fluid checking or maintenance.
A: LONGi is a global Tier-1 solar manufacturer. The Horizon LR5-28HTH-225M uses HPBC monocrystalline technology with 21.6% module efficiencyIts 13.06A operating current ensures much faster battery charging compared to generic unbranded panels.
A: The 1004.8Wh battery capacity provides around 6 to 8 continuous backup hours for 2 fans, 3-4 LED bulbs, and a Wi-Fi router. During daylight, real-time solar generation from the LONGi panel extends runtime significantly.
A: Yes. The SAKO 300W ESS functions automatically. It charges via the LONGi solar panel (or AC mains when solar is unavailable) and seamlessly provides backup power when load-shedding hits.
A: It is designed as a simple plug-and-play solution. Connect the positive and negative MC4 cables from the LONGi Horizon panel to the SAKO ESS solar input port, plug your household appliances into the AC output socket, and switch it ON.
A: The package includes a 2-Year Official Warranty for the SAKO 300W ESS unit and internal electronics, along with a 12-Year Product Warranty and 25-Year Linear Power Warranty on the LONGi Horizon Solar Panel.
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