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How to choose the right lithium battery?

Views: 0     Author: Site Editor     Publish Time: 2021-12-10      Origin: Site


How to choose a suitable lithium battery for yourself?

With the high price of electricity and the global low carbon development today, a kind of future green solar energy system with low installation cost, short recovery cost time, easy installation, low maintenance cost and green environmental protection appears in the public's view. It is the home energy storage system. Excellent energy storage battery can provide a better working experience for home energy storage power plant. Today let us discuss how to select the right home lithium battery for yourself.

First. Battery type selection

Currently in the household storage project, lithium batteries have become the mainstream choice, and the market share of new chemical batteries is up to 95% or more. Compared with lead-acid batteries, lithium batteries have the advantages such as high efficiency, long cycle life, accurate battery data and high consistency. In recent years, lithium battery manufacturing costs have been declining year by year.And according to the U.S, Bloomberg New Energy Finance (BNEF), the cost of lithium batteries in 2019 is about $156 per kilowatt-hour, down 85% from the same period in 2010. And according to the current trend, the cost of lithium batteries will drop to less than $100 per kWh in 2024.

Second, the principle of battery selection

The energy storage of storage battery is controlled automatically in photovoltaic system.When the battery terminal voltage reaches its maximum value, the system automatically cuts off the solar panel supply battery circuit.When the battery terminal voltage reaches the lowest value, the system automatically cuts off the battery supply load circuit.

As a storage power plant with photovoltaic power generation access, to achieve peak shaving, load compensation, and improve power quality applications, energy storage battery is a very important component that must meet the following requirements.

1. Easy to realize multi-mode combination to meet the demand of high-power electricity load.

2. Battery performance and capacity with diagnosability, so that the control system can realize the scheduling control of the power plant load in anticipation of the battery capacity and performance.

3. High safety and reliability: under normal use, the normal service life of the battery is not less than 15 years.

4. In the limit, even if a failure occurs, it is within the controlled range and should not explode, burn and other failures that endanger the safe operation of the power station.

5. Have good fast response and large multiplier charge/discharge capability, generally requiring 5-10 times the charge/discharge capability.

6. With high charge/discharge conversion efficiency.

7. Easy to install and maintain.

8. With good environmental adaptability, a wide range of operating temperatures.

9. Meet the requirements of environmental protection, in the battery production, use, recycling process does not cause pollution and damage to the surrounding environment.

Third, the choice of battery brands in different contexts  

In order to make it more convenient for you to choose the energy storage battery, the author selected a more affordable battery brands according to different use scenarios.

1. Home energy storage

 Scope of application: home roof photovoltaic energy storage system, small commercial areas, remote areas without electricity, uninterrupted power supply field.  

Product selection: TERLI corresponding products - Helios series

This series of energy storage battery belongs to lithium iron phosphate energy storage battery compared to other products of the same type, it has a higher security, more intelligent design, peak shaving and valley filling, battery operation status at a glance. Optimized operating procedures, plug and play, with complete online protection, grid-connected off-grid situations can be used.

Home battery

2. Communication, commercial energy storage

Scope of application: off-grid solar system storage, central data center, telecommunications backup, military / medical / industrial / power / security / transportation / logistics / backup power UPS and other fields.

Product selection: TERLI corresponding products-Pack X series

 Letter energy storage using lithium iron phosphate batteries, maintenance-free, modular design, easy to install and expand capacity, can be connected in parallel with multiple battery packs. Suitable for high energy storage applications, wide operating temperature range, long cycle life and high reliability. Built-in intelligent BMS with multiple protection and communication functions.

communication battery

3.12V, 24V, 48V lithium battery

Scope of application: solar/sound equipment, forklift/golf cart, sweeper/RV, mountain power generation/electric propulsion

Product selection: TERLI corresponding products - LFP BATTERY series

LFP BATTERY series are available in 12V, 24V and 48V respectively, and use lithium iron phosphate battery, which is a lithium-ion battery with LiFePO4 as the positive electrode material and carbon as the negative electrode material.

Lithium iron phosphate battery has the advantages of high operating voltage, high energy density, long cycle life, good safety performance, small self-discharge rate and no memory effect.


4. Mobile emergency power

Scope of application: outdoor camping/solar and wind energy storage system, EPS and UPS backup battery/signal system/emergency lighting system, security system/telecommunication equipment/power plant and transmission system, various new energy projects and power engineering projects.

Product selection: TERLI corresponding products-LFP BATTERY series

This series of products is the best solution to replace diesel (gasoline) generator applications, rapid deployment, direct plug and play, convenient and fast.It is a safe and rapid emergency power supply system which can ensure rapid emergency power supply when there is no market power or power supply difficulty in the field.

portable battery



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