Rentech 51.2V 50 Ah Rack-Mounted Lithium-Ion Battery (2.56kWh)

This series of rack-mounted Lithium-ion batteries are designed for the solar / backup power market. This series combines safe and reliable LFP prismatic cells with dedicated BMS to guarantee high reliability, safety and scalability.

This product can be installed in a 19” or 21” standard cabinet or rack.

The expected cycle life for these batteries when installed, operated and maintained as per the manual are as follows:

• At 80% DoD, 6000 cycles
• At 90% DoD, 5000 cycles

It is very important to properly fully charge the battery after initial installation and leave it on charge without a load on for a couple of hours to ensure the BMS had a chance to balance the cells BEFORE you start using the battery.

It is also important to ensure that the battery is regularly fully charged and cells allowed to balance and not only operate it in partial state of charge mode for extended periods.

Model: BTESF48V50-R 

Voltage: 51.2V 

Rated Capacity: 50Ah 

Total Energy: 2,56 KWh 

Recharge Voltage: 55,2V 

Dimensions (mm): (d) 430 x (w) 400 (h) 133 

Weight: 28,0kg [/vc_column_text][/vc_tab][vc_tab gutter_size=”2″ column_padding=”2″ title=”Advantages” tab_id=”1622033747-2-9552f0-484f2134-2382″ product_from_builder=”yes”][vc_column_text]

• 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. 

  This product has a 5-year warranty with a 10-year warranty option (refer to Rentech Lithium Warranty form)