Solar Batteries

B1 – AS1 – China Solar Panel Battery Charger

Solar batteries allow for excess solar power to be stored for later use or export to the grid. Our China home battery systems stand out through high DoD-levels and power capacity and a low price.

Get in touch for solar batteries quotes or book a free and noncommital discovery call.

Our Solar Battery Manufacturers

SAJ omvormers voor zonne energie

Guangzhou Sanjing Electric Co., LTD (SAJ) is a Chinese high-tech enterprise founded in 2005. SAJ specializes in renewable energy conversion, transmission, and storage solutions. With an R&D staff of  over 500 employees, SAJ has a strong commitment to innovation. Grid-tied solar inverters, storage solutions & solar batteries, all-in-one battery solutions, and monitoring platforms are among SAJ’s top products.

Our Services

Our products are available for wholesale purchase or as part of a complete solution. Contact us for pricing details China solar battery charger products.

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saj logo high resolution
Get in touch for pricing details on SAJ products. Alternatively, you can schedule an appointment for a free online consultation.

SAJ AS1-3KS-5.1

  • Storage Capacity: 5.1kWh
  • Integrated Inverter Charger
  • DoD ≤ 90%
  • Cycle Life ≥ 6000
  • Warranty: 10 years
  • Three Working Modes

AS1 Solar Battery

The AS1 is a great retrofit solution to upgrade a solar panel system with a solar PV battery storage function. Furthermore, it is modular, so more capacity can be added with additional batteries anytime. It is compatible with all solar panel and battery systems and can be installed in existing or new ones.

Despite being a sophisticated device, the AS1 is easier to use than a phone charger. Three different working modes allow users to minimize their energy bills. Battery charging and discharging time can be flexibly set based on local peak and off-peak electricity periods.

With its own on-grid inverter, the AS1 can simultaneously act as solar battery charger. However, we recommed the H1 inverter as a solar panel charger if an on-grid inverter is not already installed. The H1 has an integrated USB port with WifI module and different verification methods. Thus, combining the two devices allows the whole solar PV system to be controlled with just one device.

AS1 working modes

1. Self-Consumption
sc mode AS1

Self-consumption mode is the best way to store energy from solar PV panels when aiming to minimize electricity cost.

  • Daytime: With solar power being the preferred electricity source, excess energy charges the battery. Any further amount of energy is exported to the grid.
  • Night: The battery powers energy usage at night.
  • Electricity from the grid is used only if solar panels plus battery storage system don’t provide enough power.
2. Time of Use

Time of use is optimal for using stored power to minimize electricity bills (also known as peak shaving).

  • Peak hours: The battery is the preferred power source, solar system second and grid power third. Excess solar power gets exported to the grid.
  • Off-peak hours: Battery charges with solar power for use during peak hours. Excess solar power is the primary electricity source.
  • Electricity gets imported from grid if you run out of battery at night.

In this mode, the battery is programmed to accept a charge and to discharge power at specific times. This technique is also known as energy arbitrage. Typically, peak rates are between 4 and 10PM. Hence, it is recommended to set the discharge time to fall within that time frame.

3. Backup

Backup-mode makes sure that the battery remains fully charged at all times.

  • Daytime: The solar panels and storage system charges the battery to maintain power backup. Excess solar power will power the house, while the remaining surplus is exported.
  • Night: Grid electricity powers the house at night.
  • Electricity gets imported from the grid if more power is need than the home battery energy storage system provides.

This mode keeps the solar panel battery bank fully charged. This way, a solar power backup for home is available during power cuts.

The AS1 is not a portable solar charger. However, the small dimensions of the AS1 also make it suitable for mobile solutions. Therefore, you can easily travel with a bunch of battery packs in a mobile home.


saj omvormer storing
  • Storage capacity: 5.1kWh
  • DoD ≤ 90%
  • Usable capacity: 3000W
  • Life cycles: ≥6000
  • 10-year warranty
  • 3 different operating modes
  • Solar battery charger
saj logo high resolution
Get in touch for pricing details on SAJ products. Alternatively, you can schedule an appointment for a free online consultation.

B1 Solar Battery

  • Solar power battery bank for home
  • 5 kW solar battery
  • Lithium ion batteries
  • Modular design
  • Capacity: 3000W
  • Life-cycles ≥6000

B1 Solar Battery

The B1 is a modular high voltage battery solar power systems. It’s lithium-based battery chemistry yields a higher energy density than other battery technologies. Being a modular battery, the B1 is expandable, allowing to connect up to four batteries in one stack. This way, a maximum storage capacity of 20.4kWh per stack can be achieved.

A full battery stack has enough storage capacity to power a family household for 24 hours. This makes the B1 ideal to export excess solar power, as daytime demand is already covered by solar panels.


B1 Solar Battery Bank SAJ
  • Storage capacity: 5.1kWh
  • DoD ≤ 90%
  • Usable capacity: 3000W
  • Life cycles: ≥6000
  • 10-year warranty
  • Modular design
  • Expandable

Solar Batteries Explained

Solar power storage solutions have flooded the market with numerous variants and sizes in recent years. Due to several breakthroughs in lithium battery technology, manufacturers developed smart and modular systems for modern energy storage applications. As a result, traditional lead-acid batteries for solar energy storage has become almost redundant.

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Benefits of Solar Power Battery Storage

  • Use solar power at night
  • Sell solar power to the grid for a profit
  • Save money by charging on cheap overnight electricity and using the battery during peak hours,

In short, a solar battery allows you to store electricity for use at a later time. It can can then be exported to the grid or used at night. Many homeowners have PV panels that generate electricity during daylight hours.

Choosing the Right Solar Battery

Solar batteries should be selected according to several key factors. These include system size, type (grid-tied or off-grid) and storage capacity.

Solar Batteries – Selection Criteria

  • Usable storage capacity (kilowatt-hours)
  • Output power ratings
  • Efficiency
  • Cycle life
  • Operating temperature range
  • Warranty conditions

Solar Battery Storage Solutions

A solar battery can easily be installed into an existing PV system. The solar battery must be either AC or DC coupled, depending on the type of inverter used. If the PV system has a micro inverter, the solar battery must be AC coupled.

Micro inverters are the cheaper option (since the inverter doesnt have to be replaced) and installation is relatively quick. However, this will result in higher energy losses, as the electricity generated by the system must be converted twice.

The alternative is to replace the existing inverter with one that is compatible with the solar battery. This is more expensive at first as the entire system needs to be rewired. However, the solar power is only converted once, making it more energy efficient in the long run.

Solar Battery Cost

The most important factors determining solar battery cost are the type of chemical materials used, battery life and storage capacity. On average, service life of a solar battery is 5-15 years. Therefore, solar batteries may need to be replaced more often than inverters or panels.

However, investing in a solar electricity storage solution can make up for the cost if implemented effectively. Solar batteries also allow a household or business to become 100% energy independent and self-sufficient.

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Due to the large number of options, choosing acceptable solutions for solar panel battery storage has become a challenge.

Take advantage of our free consultation services to find the optimal solution for your solar energy storage system.

Solar Battery Storage System Incentives

Governments on the national, provincial and town level offer various renewable energy incentives. There are also programmes specifically aimed at supporting businesses and home energy storage with solar power.

Solar Energy Storage – Grants & Incentives

  • Feed in Tariff (FIT)
  • Smart Export Guarantee (SEG – UK only)
  • Grants

To encourage renewable generation, many governments offer a price above market level for feeding renewable energy into the grid. These prices are set in contracts called Feed In Tariff (FIT).

UK customers profit from a new legislation called Smart Export Guarantee (SEG). As a result, UK energy suppliers are required to pay households and businesses for exporting solar power to the national grid. Exports will be measured by smart meters, which are installed by the respective electricity provider.

Use the contact form below to inquire about which financial incentives are available for your project. Make sure to provide the correct details for a correct assessment.

FIT/SEG Inquiry & Solar Battery Packs Quotes

13 + 8 =

Project References

Kortrijk, Belgium - (AS1 & Suntrio Plus 10k)

Storage capacity: 15.6kWh

Solar Batteries FAQ

Can You Store Solar Energy?

Yes. Basically, solar electrity battery storage allows you to store power for use at a later time.

By adding a battery to the system, this energy can be used at night and minimize electricity cost.

How Do You Store Solar Energy?

A solar energy storage system requires batteries to store solar power for later use. For example, you can store the electricity your solar panels generate during the day and use it at night. JustWe sells single batteries as well as complete storage battery systems.

How Much Do Solar Batteries Cost?

For end customers, the cost of solar batteries ranges from €4,400 to €6,200+, with
These prices are for the battery only, and do not include the installation cost or any other accessories.

How Long Do Solar Batteries Last in Garden Lights?

Generally speaking, the batteries in outdoor solar lights can be expected to last about 3-4 years before they will need to be replaced. The LEDs themselves can last ten years or more. They require only small amounts of electricity, so solar light batteries are not larger than a credit card.