Guangzhou Anern Energy Technology Co., Ltd.

How to Choose the Right Battery for Your Off-Grid Solar System?

Apr 08, 2023
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    We should not overemphasize the need for batteries in off-grid solar systems. For our solar system, we should charge your battery during the day through solar panels and discharge deeply after sunset. But the question is: how do we choose a battery? Here are some tips that may help you choose a battery.


    Understanding a complete off-grid solar system


    An off-grid solar system, also known as an independent photovoltaic system, is a standalone power generation system that does not rely on the power grid. The off-grid solar system is mainly composed of components such as solar panels, batteries, solar controllers, and inverters. The DC generated by the solar panel directly flows into the battery and is stored. When DC power is needed to supply AC loads, the DC power in the battery is converted into AC output by the inverter, which is a repeated charge and discharge cycle. Commercial off-grid solar systems can be installed and used where there is sunlight, so off-grid solar systems are very suitable for home use, areas without power grids, fishing boats, outdoor breeding bases, etc. In addition, it can also be used in areas where there is frequent power outages as emergency power generation equipment.


    The selection of batteries for a complete off-grid solar system


    Rated voltage


    When selecting batteries, it is important to match the rated voltage with the battery charger and off-grid inverter.


    Capacity


    Pay attention to the capacity in Ah (ampere-hour).


    Efficiency


    You should choose the highest possible efficiency. If you don't get a battery that is very efficient, you may have to compensate for its inefficiency with a larger solar panel. Therefore, this feature is very important.


    Life span


    The lifespan of a good complete off-grid solar system battery is usually about 3-4 years. Anything below this value may put you at a disadvantage of incurring additional costs, so it is important to use the equipment correctly.


    Off-grid solar power generation systems actually convert solar energy into electrical energy through solar panels under lighting conditions, supply loads with DC power through solar charge and discharge controllers, and charge the battery group. In rainy weather or in the absence of sunlight, the DC load is supplied by the battery group through the solar charge and discharge controller, and the battery group also directly supplies the independent inverter with power, which is inverted into AC power and supplied to AC loads.


    The design of Anern products is based on customer needs and industry development, guided by product technology research, and integrated with advanced design concepts.


    Andy Cao
    Andy Cao

    I’m Andy Cao, an energy engineer with over 16 years of hands-on experience in solar inverters, lithium battery energy storage, photovoltaic systems, and solar street lighting. I focus on real-world system performance and write to share practical, experience-based insights for professionals working in the solar energy industry.

    FAQ

    What type of lamp is used in street lights?

    We use SMD5730, EPISTAR and LG 3030 LED chips, with high light efficiency, low power consumption, wide luminous Angle and other characteristics.

    What payment methods do you accept?

    For samples, full by T/T in advance;  for bulk order, 30% deposit by TT in advance, balance by TT before shipment. The L/C is acceptable for big order. It can be negotiable.

    What types of solar energy systems does Anern provide?

    Anern provides on-grid solar systems, off-grid solar systems, hybrid solar systems, and integrated solar energy storage systems that combine solar panels, inverters, lithium batteries, and system accessories.

    What types of solar inverters does Anern produce?

    Anern produces several types of solar inverters across multiple product series for different applications:


    Off-Grid Solar Inverters: Designed for areas without grid access or unstable power sources, supporting remote power access 12. For example:


    AN-SCI-PRO Series (2000/3200W models)

    AN-PVI Series (6000/10000W)

    Hybrid Solar Inverters


    IP65-rated Hybrid Inverters: Durable, all-weather inverters for grid-tie/backup systems. Includes AN-SCI-EVO series (e.g., AN-SCI-EVO10200, EVO4200/6200)

    UPS Hybrid Inverters: Models like the 2000-12000W solar inverter with UPS functionality for uninterrupted power supply

    Low Frequency Solar Inverters: Heavy-load industrial inverters for high-power applications. Features include driving pumps, air conditioners, and refrigerators 


    Specific product highlights:

    AN-FGI-DU4200 Series: Hybrid PV inverters for residential/commercial use

    AN-SCI02-PA Series: Off-grid parallel inverters (e.g., AN-SCI02-PA6200)


    Anern produces the following inverter power ratings and types:


    Power Ratings:

    1kW Inverters

    1.5kW Inverters

    2kW Inverters

    3kW Inverters

    4kW Inverters

    4.2kW Inverters

    5kW Inverters

    6kW Inverters

    6.2kW Inverters

    6.5kW Inverters

    7.2kW Inverters

    10kW Inverters

    10.2kW Inverters

    12kW Inverters


    Inverter Types:

    Single Phase Solar Inverter

    MPPT Solar Inverter - Integrated in controllers

    Off Grid Inverter

    Hybrid Solar Inverter

    High Power Inverters (commercial, up to 100KW)

    Commercial Solar Inverter

    UPS Solar Inverter

    Pure Sine Wave Inverter - Fundamental to all models

    Solar Power Inverter for Home - All residential models


    Note: Dual-output and on-grid capabilities are implied through hybrid and UPS systems.


    Why is Anern included in lists of solar energy manufacturers?

    Anern is included in solar energy manufacturer lists due to its involvement in supplying multiple core solar products, including solar inverters, lithium battery energy storage systems, solar panels, and integrated solar system solutions.

    References
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