Description

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ADVANTAGES

• SAFETY
  • Over voltage protections system 
  • Low voltage protection system 
  • High temperature protection 
  • Low temperature protection 
  • Short circuit protection 
  • Over current protection 

BATTERY MANAGEMENT SYSTEM (BMS) 

• Separate control and protection for the charge and discharge processes to maximize system availability 
• Real-time detection of voltage, current, temperature, SOH, SOC and a variety of protection 
• Support for parallel connection only 

CELL 

• Lithium Iron Phosphate (LFP) prismatic cells with high safety and reliability 
• Fully automated production following a mature and stable process, ensuring consistent charge / discharge performance and life span 
• IEC62133, UL and UN38.3 certifications 

 BENEFITS OF SOLAR BATTERIES 

• Source of clean energy 
• Reduced noise levels compared to generators 
• Cost savings 
• Uninterrupted electricity supply 

CONSIDERATIONS WHEN CHOOSING SOLAR BATTERIES 

Capacity and power ratings 

• A battery’s capacity is the total amount of energy it can store, measured in kilowatt-hours (kWh). The power rating is the amount of electricity that a battery can deliver at one time, measured in kilowatts (kW). A battery with high capacity and low power rating will deliver a low amount of electricity for a long time. A battery with a low capacity and high-power rating can run an entire home or larger operation, but only for a few hours. 

Depth of Discharge 

• Most solar batteries need to retail some charge at all time due to their chemical composition and to prolong their lifespan. The DoD refers to the maximum of a battery’s capacity that should be used. For example, sealed lead-acid solar batteries are usually operated at  £ 50% DOD to achieve a reasonable cycle life, while lithium-ion batteries can operate at 80% DOD, 8kWh from a 10kWh battery, and still provide 5 years or more cycle life. 

Round-trip efficiency 

• Round-trip efficiency represents the amount of energy that can be used as a percentage of the amount of energy required to fully charge a battery. For example, if a 5kWh capacity battery, which delivers 4 kWh electricity, would typically require 110% to 120% times the 4kWh to be fully recharged. The battery has 80% to 90% in round-trip efficiency. One should, however, remember that the battery is part of the total system, and the system also has inefficiencies and energy losses. 

 Battery life and warranty 

A battery’s ability to hold a charge gradually decreases the more it is used. For example, a battery might be warrantied for 5000 cycles or 10 years at 70% of its original capacity. This means that at the end of the warranty, the battery will have lost no more than 30% of its original ability to store energy. 

Solar batteries come with warranties that guarantee a certain number of cycles and/or years of useful life.