Battery Energy Storage Manufacturer — LFP Systems From 5kWh to 1MWh
SUNFULL is a state-backed Chinese BESS manufacturer. We produce LFP home battery storage (5–20kWh), commercial C&I BESS containers (100–500kWh), and grid-scale 1MWh container systems — with CE, TÜV, and UL 9540A certification for export to 40+ countries.
Why Global Markets Are Investing in Battery Energy Storage
The global BESS market is projected to exceed $35 billion by 2030 (BloombergNEF). LFP (LiFePO4) chemistry now dominates the market due to superior safety, longevity, and thermal stability — making it the preferred chemistry for export-grade BESS systems.
Peak Shaving & Demand Charge Reduction
Commercial electricity tariffs in Germany, South Africa, and the UAE include demand charges that can account for 30–50% of the monthly bill. BESS allows you to reduce peak demand by drawing from stored energy during high-rate periods.
Solar+Storage Self-Consumption
Pairing BESS with a solar PV system allows you to store excess generation during the day and discharge in the evening. In Pakistan (Rs11/kWh feed-in tariff) and Germany (net metering limits), self-consumption optimization is now the primary ROI driver for residential and C&I solar.
Backup Power & Grid Reliability
South Africa's loadshedding crisis demonstrated the value of BESS for backup power. SUNFULL BESS systems can provide seamless UPS-class switching (less than 20ms) to keep critical loads running during grid outages — essential for telecom towers, hospitals, and data centers.
Frequency Regulation & Grid Services
BESS systems can participate in ancillary grid services markets: frequency regulation, spinning reserve, and demand response. In the EU and UK, BESS owners can earn $150–$400/kW/year by providing grid balancing services through aggregators.
Off-Grid & Diesel Replacement
Mining sites, remote telecom base stations, and island communities are replacing diesel generators with solar+BESS microgrids. Fuel costs of $0.40–$0.80/kWh for diesel make BESS+solar the economic default for any site with annual diesel consumption above $50,000.
150% Tax Credit — South Africa
The South African government introduced a 150% tax depreciation allowance for battery storage and EV charging infrastructure investment. A R10M BESS installation generates R15M in tax deduction — dramatically improving project IRR for commercial buyers.
LFP vs NMC — Why SUNFULL Uses LiFePO4
For stationary energy storage applications, LFP (LiFePO4) chemistry outperforms NMC on the three metrics that matter most for international buyers: safety, cycle life, and export-readiness.
| Specification | LFP (LiFePO4) — SUNFULL Standard | NMC (Li-ion) |
|---|---|---|
| Cyclelife (80% DoD) | 6,000–10,000 cycles | 3,000–5,000 cycles |
| Thermal runaway risk | No oxygen release; stable to 270°C | Can enter thermal runaway above 200°C |
| Operating temperature | -20°C to +60°C (no cooling required) | Requires active cooling for sustained operation |
| Energy density | 125–160 Wh/kg (sufficient for stationary use) | 200–260 Wh/kg (advantage in mobile applications) |
| Cobalt content | Zero cobalt — no conflict mineral issues | Contains cobalt; supply chain scrutiny |
| Certification coverage | CE, TÜV, UL 9540A, IEC 62619 widely available | Requires more testing for safety certification |
| Best for | Stationary storage, outdoor, hot climates | EV batteries, space-constrained applications |
BESS Product Range — Every Scale, One Manufacturer
BESS Applications — How Our Customers Deploy Systems
Commercial Building & Office Park
A 200kWh BESS + 100kW solar system reduces a commercial building's peak demand charge by 40–60%. ROI typically 3–5 years in markets with demand charges (Germany, UAE, South Africa).
Telecom Tower & Data Center Backup
Telecom operators use 50–200kWh BESS to replace diesel generators at cell towers. Zero fuel cost, near-zero maintenance, remote monitoring via OCPP. Payback in 2–4 years in off-grid or unreliable grid locations.
Mining & Industrial Microgrid
Off-grid mining operations use 500kWh–2MWh BESS + solar + diesel hybrid systems. Diesel consumption reduction of 40–70% depending on solar resource. Mining-site compliance and remote maintenance requirements are considered from the start.
Residential & Villa Backup
5–20kWh stackable LFP systems for homes in areas with grid instability. In South Africa (loadshedding), a home BESS system eliminates the need for inverter+lead-acid systems entirely — longer runtime, zero maintenance.
EV Charging Hub Buffer Storage
A 500kWh BESS buffer between the grid and 10+ DC fast chargers reduces grid connection costs by 50–70% (avoiding heavy grid upgrades). Charge during off-peak, discharge during peak EV charging sessions.
Peak Shaving & Demand Charge Management
The single largest BESS application for commercial customers. Predict your 15-minute demand peaks, pre-discharge the BESS, and shave peaks by 30–60%. Most industrial and commercial tariffs globally include demand charges.
Questions Battery Storage Buyers Ask Us
What cell brands do you use?
SUNFULL uses cells from tier-1 manufacturers: CATL (China's largest), BYD (Blade Battery), EVE Energy, and REPT — depending on availability and your specification. All cells come with 10-year manufacturer warranties. Cell brand is stated in the datasheet for every order.
What is your minimum order quantity?
1 unit for home and small commercial BESS (5–200kWh). Production orders for container BESS (500kWh+) typically start at 1 unit as well. For hybrid inverter bundles, MOQ is 10 units per SKU.
Can the BESS be integrated with our existing solar system?
Yes. SUNFULL BESS systems support both AC-coupled and DC-coupled integration. For AC-coupled, the BESS is installed behind your existing inverter. For DC-coupled (more efficient), we integrate at the PV string level. We can specify the correct interface for any major inverter brand.
Do you provide UL 9540A certification?
Yes. SUNFULL's container BESS systems carry UL 9540A certification for the integrated system — the standard required for US and Canadian market import. We also hold IEC 62619 for EU markets and UN38.3 for safe transport certification.
What is the warranty period?
10-year performance warranty on the battery cells (80% capacity retention at end of warranty). 3-year hardware warranty on BMS, PCS, and container hardware. The container BESS is designed for a 15+ year operational lifespan with cell replacement at cycle 6,000–8,000.
How long does production take?
Home BESS (5–20kWh): 20–30 days. Commercial rack BESS (100–500kWh): 30–45 days. Container BESS (500kWh–1MWh): 45–60 days. Custom specifications may add 10–15 days. Express production available with a 15% surcharge.
Can we white-label the BESS with our company name?
Yes. Full OEM branding is available for container BESS: logo on the container exterior, data portal branding, packaging, and documentation. For rack and home BESS, we can apply screen-printed logos to the unit enclosure and customize the app/portal branding.
Do you handle shipping and freight?
We handle FOB and CIF terms. For 20-ft container orders, we arrange sea freight from Wuhan/Shanghai to your port. We provide all export documentation (COO, COO, packing list, commercial invoice) and can arrange marine insurance. DDP available for orders above $100,000.
What monitoring and communication protocols are supported?
All SUNFULL BESS supports Modbus TCP/IP, CAN bus, and OCPP 1.6/2.0 for integration with energy management systems (EMS). Remote monitoring via our SUNFULL Cloud portal is included. Custom API integration available for large-scale deployments.
Can the BESS be expanded after initial installation?
Yes. Home and rack BESS systems use a modular, scalable architecture. You can add battery modules or rack units after installation without replacing the BMS or inverter. Container BESS systems are designed for future capacity expansion by adding parallel containers.
Do you offer installation and commissioning support?
We provide detailed installation manuals, wiring diagrams, and remote commissioning support (video call + remote access) as standard. For projects above 500kWh, we can arrange a field service engineer to travel to site for commissioning (travel and accommodation charged separately).
What payment terms do you offer?
T/T 30% deposit, 70% balance before shipment for new customers. L/C at sight available for orders above $50,000. Credit terms (O/A 30 days) available for distributors with established payment history.
Need a Battery Energy Storage System for Your Project?
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