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Battery Energy Storage System FAQs– GSL ENERGY

Get answers to your most frequently asked questions about home and commercial battery storage systems.

Battery Energy Storage FAQ – Your Questions Answered

Looking for answers about battery energy storage systems? You're in the right place.

This FAQ page covers everything you need to know about home energy storage, commercial & industrial battery systems, OEM/ODM services, and after-sales support.

Whether you're a homeowner installing solar batteries or a business planning a large-scale BESS project, GSL ENERGY provides expert solutions tailored to your needs. Discover clear, reliable information to help you choose the right lithium battery system.

What are the typical battery capacities offered by GSL ENERGY for home use?

GSL ENERGY offers standard home battery capacities including 5kWh, 10kWh, 14.34kWh, 15kWh, and 20kWh, available in wall-mounted, stackable, and floor-standing designs. Capacities can be expanded upon request.

What types of solar batteries are available for GSL home energy storage systems?

We offer a variety of LiFePO4 solar batteries, including Powerwall wall-mounted batteries, stackable modular batteries, and floor-standing mobile battery towers. These are widely used in residential solar systems and compatible with major inverter brands.

Can GSL home energy storage systems be used off-grid?

Yes. GSL home storage systems support both off-grid and grid-tied modes, allowing for independent power supply in areas without grid access or full energy self-sufficiency when combined with solar panels.

Will the system automatically switch to battery power during a grid outage?

Yes. When paired with a hybrid inverter that supports off-grid mode, the system will seamlessly switch to battery power, ensuring uninterrupted electricity supply during blackouts.

Can I connect multiple battery modules in parallel?

Yes. GSL batteries support up to 16 units in parallel, allowing system capacity to scale beyond 100kWh, suitable for large households or high-demand users.

What is the battery lifespan and cycle count?

Our LiFePO4 batteries offer over 6000 to 8500+ cycles, with a service life of more than 15 years under proper usage.

Which inverters are compatible with your batteries?

GSL batteries are compatible with leading inverter brands such as Growatt, Deye, Solis, Victron, and SMA, and support RS485 and CAN communication protocols.

What should I do if the system doesn’t work properly?

Contact our technical team. We provide 24–48h response, remote diagnostics, and on-site support in some regions.

Can I access system performance data remotely?

Yes. GSL Cloud and App allow real-time monitoring, alerts, and performance tracking.

What is SOC and how do I monitor it?

SOC stands for State of Charge. It can be viewed via the LCD screen, app, or web dashboard.

What is the capacity range of your commercial and industrial energy storage systems?

Our C&I energy storage systems range from 30kWh, 50kWh, and 100kWh to 500kWh–5MWh containerized systems, and can be customized for various project requirements.

What applications do your energy storage systems support?

Our ESS supports peak shaving, emergency backup, load shifting, and solar + storage + EV charging integration. It is widely used in factories, warehouses, data centers, EV charging stations, and commercial buildings.

Are your systems certified to international standards?

Yes. GSL's energy storage systems are certified with UL9540A, UN38.3, IEC62619, CE, and ISO9001/14001, ensuring safety, quality, and global compliance.

Is the installation process complicated? Do you provide turnkey solutions?

Our ESS is designed as pre-assembled, plug-and-play systems, requiring minimal on-site work—just cable connections. We also provide full turnkey project services, including design, integration, and deployment support.

How is the system monitored and maintained remotely?

Our systems come with an intelligent EMS (Energy Management System) and cloud platform, enabling real-time monitoring, configuration, and remote diagnostics via mobile app or web interface for efficient O&M.

How much capacity does GSL's commercial and industrial energy storage system support? Is it expandable?

Our high-voltage battery cabinets range from 60kWh, 100kWh to 418kWh, and support modular expansion, which can be easily stacked up to 5MWh or even higher, to meet different project requirements (factories, commercial buildings, telecommunication base stations, micro-grids, etc.).

Does the system support both on-grid and off-grid modes?

Yes, GSL's industrial and commercial energy storage systems can be flexibly configured in grid-connected, off-grid, or hybrid modes to support self-generation and self-consumption, peak/valley arbitrage, emergency power backup, and other application scenarios.

What are the security features of the energy storage system?

The system has built-in multiple safety mechanisms, including cell-level temperature control, battery pack BMS over-voltage and over-current protection, EMS energy dispatch control, fire smoke detection, and a fault warning system etc. The system complies with international standards, including CE, UN38.3, and IEC 62619.

Does it support parallel use of multiple systems?

Yes, the GSL high voltage energy storage system supports parallel connection of multiple cabinets, which is suitable for large and medium-sized industrial and commercial projects or microgrid cluster system deployment.

Do you provide operation and maintenance services?

Yes. We provide integrated after-sales services such as regular inspections, remote monitoring, alarm response, firmware upgrades, etc., for projects worldwide, and support localized engineer resources in key markets.

What is the operating temperature range of the equipment?

Our battery systems operate from -20°C to 55°C with over-temperature protection for a wide range of climates and industrial environments.

How long do commercial and industrial systems last?

GSL ENERGY systems are designed to last 8500-12000+ cycles, with a life expectancy of 15-20 years, depending on the conditions of use.

What brands of inverters are supported by GSL ENERGY?

We support mainstream inverter brands such as Deye, Solis, GoodWe, Growatt, Huawei, etc. We can also provide customized EMS system docking solutions according to customer needs.

Does GSL ENERGY support OEM/ODM/OBM?

We support three modes of cooperation, and can customize the battery pack structure, protocol communication, exterior design and whole cabinet system solution for brand owners, system integrators and large energy service providers.

Do you accept OEM/ODM customization?

Yes, with over 15 years of experience in battery customization, GSL supports full OEM/ODM services including custom logos, casing color, BMS protocol, battery capacity, and structural design to meet diverse market needs.

Are you a manufacturer or a trading company?

GSL ENERGY is a high-tech manufacturer with its own factory, offering a complete production line for LiFePO4 cells, battery modules, and integrated ESS. Factory visits or video audits are welcome.

Can you provide datasheets and technical drawings?

Yes. Before order confirmation, we provide comprehensive datasheets, CAD dimension drawings, communication protocols (RS485/CAN), and installation manuals for technical evaluation.

What is your minimum order quantity (MOQ)?

For standard models, MOQ starts from 1 unit, ideal for sample testing or market validation. For customized solutions, MOQ is based on your specifications and volume, with flexible options for bulk cooperation.

What are your shipping methods and lead times?

We offer sea, air, rail, and DDP shipping options via trusted freight forwarders. Standard products ship within 7–15 working days, while customized solutions typically require 15–30 days depending on complexity.

Are batteries included with your system? What type of batteries do you use?

Yes, our systems come with built-in lithium iron phosphate (LiFePO4) batteries, known for safety, long cycle life, and excellent thermal stability.

Are the batteries installed in a racking system?

Yes, we offer modular rack-mounted systems for residential and commercial applications. Wall-mounted and cabinet-type options are also available.

What is the typical installation time for your system?

Residential systems typically take 2–4 hours to install. For commercial systems, installation may range from 1–3 days depending on project size and site readiness.

What safety features are included in your battery systems?

All GSL ENERGY batteries include a built-in Battery Management System (BMS), over-voltage protection, over-current protection, short-circuit protection, temperature monitoring, and fire-retardant casing. Our products meet international standards such as UL, CE, UN38.3, IEC62619.

Is your system scalable?

Yes, our systems are fully scalable. For example, our 51.2V residential batteries can support up to 16 units in parallel, and our commercial high-voltage cabinets range from 80kWh to over 5MWh.

Do you provide system maintenance?

Our systems are low-maintenance. We offer remote technical support, monitoring tools (cloud/APP), and global after-sales service. For large projects, on-site maintenance or third-party support is available.

What is the cost of your battery system?

Pricing varies depending on system size, configuration, and shipping location. For a personalized quote, please contact our sales team with your specific requirements.