Energy Storage Battery & BESS Supplier

AllGrand supplies energy storage batteries, battery modules, rack systems and complete battery energy storage systems (BESS) for distributors, EPC contractors, system integrators, telecom operators, utilities and commercial project owners. This guide covers the main battery chemistries, system formats, applications, sizing variables and procurement questions involved in selecting an energy storage battery for a real project.

The product range includes lithium and LiFePO4 storage, sodium-ion cells, gel and lead-acid batteries, prismatic cells, low-voltage and high-voltage packs, wall-mounted systems, stacked battery cabinets, liquid-cooled commercial BESS and containerised energy storage. Requests are reviewed against usable energy, peak power, duty cycle, temperature, available footprint and the destination market.

Energy storage battery and BESS product categories

Category	Typical format	Common application	Product path
Lithium battery energy storage	Modules, packs, racks, cabinets and containers	Commercial peak shaving, solar storage, backup and grid support	Lithium energy-storage systems
LiFePO4 / LFP battery	Prismatic cells, 12–32 kWh packs, 120–1044 kWh systems	High-cycle solar, C&I storage and long-duration backup	LFP cells and wall-mount LFP storage
Sodium-ion battery	100 Ah and 110 Ah prismatic cells	Pack integration, cold-temperature projects and non-lithium ESS development	Sodium-ion and LFP cells
Gel and lead-acid battery	2 V and 12 V VRLA blocks	UPS, telecom, solar, switchgear, marine and emergency power	Gel and lead-acid batteries
Containerised BESS	1044 kWh system using four 261 kWh cabinets	Utility, infrastructure and larger industrial storage	Containerised energy storage
Liquid-cooled BESS cabinet	261 kWh and 522 kWh outdoor cabinets	Commercial, industrial, high-temperature and space-constrained sites	261 kWh cabinet and 522 kWh cabinet

Battery energy storage system components

A complete BESS is more than a battery cabinet. The architecture normally includes battery cells, modules, a battery management system (BMS), DC protection, a power conversion system (PCS), an energy management system (EMS), thermal management, fire detection or suppression, metering and communication interfaces. The battery, PCS and EMS must be specified together so that power, usable energy and grid behaviour match the project requirement.

Cells and modules: the basic electrochemical capacity and voltage-building blocks.
Battery pack: a mechanical and electrical assembly containing cells, busbars, sensing and protection.
Battery rack: a scalable arrangement of modules with DC wiring and BMS communication.
Battery cabinet: an integrated enclosure with rack batteries, protection, thermal management and controls.
Containerised BESS: a larger outdoor system that combines battery cabinets, power conversion, controls and safety equipment.
PCS: converts between AC and DC and defines the system’s active and reactive power capability.
EMS: controls dispatch, monitoring, alarms, scheduling and energy or power targets.

Lithium, LiFePO4, sodium-ion and gel energy storage

Battery chemistry	Typical strengths	Procurement considerations	Common applications
LiFePO4 / LFP	Long cycle life, stable chemistry, high usable energy, integrated BMS	Temperature, C-rate, enclosure, inverter or PCS compatibility and warranty scope	Solar storage, C&I BESS, peak shaving, backup and microgrids
Sodium-ion	Cold-temperature capability, non-lithium chemistry and prismatic formats	Cell-level integration, available system architecture and project qualification	Battery pack development, cold sites and emerging ESS projects
Gel / VRLA	Familiar technology, sealed maintenance-free format and broad charger compatibility	Depth of discharge, cycle duty, temperature and replacement planning	UPS, telecom, solar, switchgear and standby power
Lead-acid	Low initial cost in some standby applications and simple system architecture	Weight, cyclic life, ventilation and lifecycle cost	Standby power, telecom, emergency lighting and industrial backup

For high-cycle projects, compare the total cost of usable energy over the project life rather than the purchase price per nameplate kWh. For standby projects, examine float life, high-rate discharge, replacement intervals and maintenance assumptions.

System formats from 5 kWh to more than 1 MWh

Low-voltage and high-voltage battery packs

Low-voltage packs are commonly used in smaller solar and backup systems. High-voltage stacked batteries can reduce current for a given power and integrate with compatible inverters or PCS equipment. The design must confirm voltage windows, communication protocols and inverter or PCS compatibility.

Wall-mounted battery storage

Wall-mounted energy storage saves floor space and suits small commercial rooms, shops, offices, telecom sites and residential-style systems. AllGrand wall-mounted systems are available in 5–15 kWh formats with integrated BMS protection. Buyers should confirm required usable energy, depth of discharge, mounting structure and environmental rating.

Stacked and modular battery systems

Stacked batteries allow capacity to be increased in modular steps. Square and ultra-thin stacked systems can suit equipment rooms where footprint or depth is constrained. Specify the maximum and minimum voltage, continuous charge and discharge current, module count, communications and future expansion plan.

Commercial and industrial BESS cabinets

C&I battery cabinets combine battery racks with thermal management and controls in a factory-integrated enclosure. Liquid-cooled designs can support high ambient temperatures and more demanding duty cycles. Project information should include peak kW, usable kWh, daily cycles, ambient conditions, IP rating, fire-safety requirements and grid interface.

Containerised battery energy storage

Containerised BESS platforms are suitable for utility, infrastructure and larger industrial projects. They may include battery cabinets, PCS, thermal management, fire protection, auxiliary power and communications. A 1044 kWh configuration built from four 261 kWh cabinets offers a scalable path from cabinet-level projects to larger installations.

Commercial and industrial energy storage applications

Peak shaving and demand charge management

Commercial battery storage can reduce site demand peaks by discharging during high-load intervals and recharging during lower-load periods. A useful design starts with interval meter data, tariff structure, target demand reduction, required duration and the number of expected events per month.

Load shifting and time-of-use optimisation

Time-of-use battery storage shifts energy from low-cost periods to expensive periods. The economic case depends on the tariff spread, round-trip efficiency, degradation cost, cycling limits and whether the site can charge the battery without creating a new peak.

Backup power and UPS support

Energy storage can provide backup for critical loads, short-duration ride-through or support for existing UPS systems. Specify the critical kW, required minutes, transfer architecture, load step profile and high-rate discharge requirement. Gel, high-rate lead-acid and lithium systems can all have a role depending on duration and duty.

Solar self-consumption and renewable integration

Solar-plus-storage projects store surplus PV generation for later use. The battery specification should include daily generation profile, load profile, export limitation, inverter details, grid-import limits, required autonomy and whether the system must operate on-grid, off-grid or both.

Microgrids, diesel hybrid and off-grid systems

Remote microgrids may combine solar, diesel generation, grid supply and batteries. Battery storage can reduce diesel run hours, improve renewable utilisation and provide stable voltage and frequency support. The design must consider load steps, generator minimum loading, black-start requirements and service access.

Telecom, data centre and utility storage

Telecom battery backup

Telecom towers and network nodes require compact, reliable backup batteries. Relevant options include 2 V GFM batteries, 12 V standby batteries and front-terminal batteries for rack cabinets. Selection depends on load profile, backup autonomy, maximum temperature, cabinet width and access for replacement.

Data centre and critical-facility batteries

Data centres and critical facilities need predictable high-rate discharge and documented replacement planning. Front-terminal and high-rate battery ranges are designed for rack and switchgear environments. For larger systems, confirm battery-string voltage, protection, monitoring and maintenance strategy.

Utility-scale and grid-support BESS

Grid-scale storage may provide capacity support, renewable shifting, frequency response, voltage support, congestion management or reserve. Projects need defining information on grid code, PCS capability, EMS use cases, reactive power, ramp rates, availability guarantees and grid-connection evidence.

How to size an energy storage battery

Battery sizing should start with energy and power requirements, not a nominal-kWh target. Nameplate energy is not the same as usable AC energy. A practical calculation considers depth of discharge, round-trip efficiency, auxiliary consumption, temperature derating and end-of-life capacity.

Required load: average kWh, peak kW, load steps and operating schedule.
Autonomy: minutes or hours the battery must support the load.
Usable energy: required AC energy after depth of discharge, efficiency and degradation allowances.
Power: continuous and peak kW, plus the resulting C-rate.
Voltage: DC operating range and compatibility with the inverter or PCS.
Temperature: minimum and maximum site temperature, solar gain and enclosure conditions.
Cycles: daily cycling, annual throughput and expected service life.
Constraints: weight, footprint, height, transport access and installation clearance.
Safety and compliance: fire strategy, ventilation, labelling and project-specific documentation.

kW and kWh: what project buyers should compare

kW describes power, or how quickly energy can be delivered. kWh describes energy, or how long a given power can be maintained. A 500 kWh battery rated at 250 kW has a nominal 2-hour relationship, but actual duration changes with usable energy, efficiency, temperature and load profile. Always compare continuous power, peak power, usable energy, DC voltage, cooling and end-of-life assumptions.

BMS, EMS, PCS and communication

The BMS monitors cell voltage, temperature and current and protects the battery within its operating limits. The PCS converts DC battery power to AC and back. The EMS coordinates dispatch, monitoring, alarms and reporting. Confirm communication protocols, remote-monitoring capability, cybersecurity responsibilities and whether the project uses Modbus TCP, CAN, Ethernet or another site standard.

Thermal management and high-temperature storage

Battery life is sensitive to temperature. Cooling and thermal-management choice affects usable power, degradation, auxiliary load and enclosure design. In hot climates, buyers should request temperature-derating information, thermal-test assumptions, cooling-system capacity and recommended installation clearances.

Battery fire safety and procurement evidence

Energy-storage safety should be addressed through cell selection, mechanical design, electrical protection, monitoring, thermal management, alarms, emergency procedures and project-specific compliance. Procurement documents should state the applicable standards and requested evidence rather than relying on general marketing claims. AllGrand reviews fire-safety and documentation requirements against the product, site and destination market.

Cycle life, degradation and warranty

Specifications should define the test conditions behind cycle life and capacity retention. Ask for the state of charge window, temperature, C-rate, depth of discharge, end-of-life threshold and whether the warranty limits annual throughput. Compare the degradation budget with the actual dispatch strategy.

Energy storage battery procurement checklist

Application and operating mode: backup, solar, peak shaving, load shifting, microgrid or grid support.
Load profile and interval data, including peak demand and load steps.
Required autonomy, usable energy and continuous or peak power.
Destination country, ambient temperature and installation environment.
Inverter or PCS model, voltage window and communication interface.
Footprint, weight, transport and lifting constraints.
Fire-safety, electrical and grid-connection requirements.
Documentation: datasheet, drawings, test information, manuals and certificates applicable to the configuration.
Commercial scope: quantity, delivery destination, warranty, spares and commissioning support.

Request an energy storage battery specification and quote

OEM and ODM energy storage batteries

Distributors and integrators can discuss private-label batteries, custom enclosure design, terminal configurations, voltage and capacity changes, manuals, packaging and export documentation. OEM and ODM projects require a written specification, prototype or sample requirements, target quantity and approval criteria before production.

Regional energy storage battery supply

AllGrand focuses on buyers in Southeast Asia, the Middle East and Africa. Regional pages cover local applications, high-temperature considerations and common procurement questions.

Energy storage battery topic guides

Frequently asked questions

What is the difference between an energy storage battery and a BESS?

An energy storage battery is the electrochemical storage component. A BESS is the complete system, normally including batteries, BMS, PCS, EMS, protection, thermal management, controls and enclosure.

How do I calculate usable battery capacity?

Start with required AC energy, then account for depth of discharge, round-trip efficiency, auxiliary loads, temperature derating and end-of-life capacity. The result is normally larger than the required load energy.

Which battery chemistry is best for commercial energy storage?

LiFePO4 is commonly selected for high-cycle commercial and solar storage. Gel or lead-acid can remain suitable for standby and lower-cycle duties. The correct choice depends on cycle requirements, temperature, lifecycle cost and integration.

Can you supply a complete containerised BESS?

Yes. The available range includes 261 kWh and 522 kWh liquid-cooled cabinets and a 1044 kWh containerised configuration. Final scope depends on the required PCS, EMS, cooling, safety and grid interface.

Do you provide OEM energy storage batteries?

Yes. OEM and ODM discussions can cover private label, enclosure, terminals, voltage, capacity, BMS integration, manuals and packaging.

Can you quote based on an EPC tender or BOQ?

Yes. Send the technical schedule, destination, project stage and required documentation so the team can map it to a comparable product and commercial scope.