Since 1987, Guangzhou ESG New Energy Technology Co., Ltd has registered TOYO battery brand as one of 5 major suppliers designated by the China government for tender, now develops with ESG, HKTOYO, and Europe TOYO brand for global markets.Currently there are production bases in various cities of Guangdong for manufacturing SLA batteries and lithium batteries, which also extends to the field of new energy products including Battery,Solar panel, Inverter, Wind turbine, Portable system, Solar light, etc.
Why Choose Us
Quality services
Our team is committed to delivering high-quality services to our clients. We use the latest technologies and tools to ensure that our services exceed your expectations.
Experience and expertise
Our company has been in business for many years and has amassed significant expertise and experience to provide quality services to our clients.
Certifications and quality standards
Choose a factory that adheres to industry standards and certifications to ensure product safety and quality.
Company Certificate
Complete certificate. We keep ISO, CE, UL CCC, ROHS, TUV, SGS, IEC UN38.3 certificates.

Advantages of Energy Storage System
Minimized Power Outages
Electricity interruptions are more than just a nuisance — outages cost Americans billions of dollars every year from lost productivity, spoiled food, and property damage. However, the impact goes far beyond financial loss.
Improved Grid Resiliency
The benefits of battery energy storage systems go beyond power outage prevention — expanding energy storage capacity makes the entire electric grid more resilient.
Reduced Electricity Costs
Batteries store energy when electricity prices are low and discharge it to the grid when demand and prices are high, providing major cost savings to utilities, businesses, and consumers.
Increased Use of Renewable Energy
Battery energy storage is especially valuable when combined with sources of renewable energy like solar, reducing reliance on fossil fuel sources and foreign imports.
Strengthened Local Economies
Energy storage projects do more than stabilize the grid and reduce electricity costs for local communities. These projects also strengthen the local economy with new job opportunities and revenue.
Parameters
|
Category |
Projects |
100kW / 215kWh Systems |
250kW/645kWh Systems |
500kW / 1075kWh Systems |
|
Configuration |
Rated power |
100kw |
250kw |
500kw |
|
Battery type |
LFP |
|||
|
RACK configuration (xPxS) |
1P1S |
3P1S |
5P1S |
|
|
Rated battery energy (kWh) |
215 |
645 |
1075 |
|
|
Rated capacity (Ah) |
280 |
840 |
1400 |
|
|
Charge and discharge parameters |
d battery voltage (V) |
768 |
||
|
Maximum charge voltage (V) |
856 |
|||
|
Discharge cut-off voltage (V) |
672 |
|||
|
Rated discharge power (kW) |
100 |
250 |
500 |
|
|
Standard charging current (A) |
140 |
300 |
600 |
|
|
Standard discharge current (A) |
140 |
300 |
600 |
|
|
Max. discharge current (A) |
280 |
362 |
724 |
|
|
Discharge depth |
90% |
80% |
80% |
|
|
Efficiency |
System efficiency |
>85% |
||
|
Basic parameters |
Ambient temperature (℃) |
-10~45℃ |
||
|
Relative Humidity |
5%~95% None Condensation |
|||
|
Protection class |
IP54 |
|||
|
Cooling method |
Individually temperature-controlled interior air conditioning |
|||
|
Fire protection system |
Fire suppression tubes |
|||
|
Communication method |
Net |
|||
Applications of Energy Storage System
Portable and Semi-Stationary Power Systems: Disaster relief, emergency response, construction, residential, kiosks, residential and commercial solar, solar lighting, data centers, UPS, recreational, etc.
Emergency Response & National Security: Police, Fire & Rescue, Homeland Security, FEMA, FBI, CIA
Production, Entertainment & Broadcast: Remote location power solutions, live productions, lighting, and post-production, real-time switching, out-of Band Access.
Small Task Oriented Vehicles: Golf cart battery systems, personal mobility, forklifts, port cranes,
Auxiliary Power Units in Transportation: RVs & Travel Trailers, marine applications (yachts & houseboat house power), beverage carts, mobile food vendors, auxiliary power for truck anti-idling apps, buses, etc.
Main specifications
|
Model |
FY-5KWH-LW |
FY-7.5KWH-LW |
FY-10KWH-LW |
|
Nominal voltage |
51.2V |
51.2V |
51.2V |
|
Nominal capacity |
100Ah |
150Ah |
200Ah |
|
Size |
520*345*160 |
520*450*170 |
585*450*205 |
|
Weight |
45KG |
70KG |
85KG |
|
Charging method |
CC/CP/VP |
CC/CP/VP |
CC/CP/VP |
|
Charging current |
0.2C (Standard)/1C(Maximum continuous charging current) |
0.2C (Standard)/1C(Maximum continuous charging current) |
0.2C (Standard)/1C(Maximum continuous charging current) |
|
Charging cut-off voltage |
58.4V/CELL |
58.4V/CELL |
58.4V/CELL |
|
Discharge method |
CC/CP/VP |
CC/CP/VP |
CC/CP/VP |
|
Discharge current |
0.5C (Standard)/1.5CMaximum continuous discharge current |
0.5C (Standard)/1.5CMaximum continuous discharge current |
0.5C (Standard)/1.5CMaximum continuous discharge current |
|
Discharge cut-off voltage |
43.2V/CELL |
43.2V/CELL |
43.2V/CELL |
|
Display |
LCD |
LCD |
LCD |
|
Communication Interface |
485/232/can |
485/232/can |
485/232/can |
|
Operating temperature |
Charge: 0~+50℃/Discharge: -20~+55℃ |
Charge: 0~+50℃/Discharge: -20~+55℃ |
Charge: 0~+50℃/Discharge: -20~+55℃ |
|
Storage temperature |
Short-term storage:-10~+45 ℃(<3 month, SOC: 20%~60%)/long-term stroage:-10 ~+40 ℃(<1 year, SOC: 30%~60 %) |
Short-term storage:-10~+45 ℃(<3 month, SOC: 20%~60%)/long-term stroage:-10 ~+40 ℃(<1 year, SOC: 30%~60 %) |
Short-term storage:-10~+45 ℃(<3 month, SOC: 20%~60%)/long-term stroage:-10 ~+40 ℃(<1 year, SOC: 30%~60 %) |
|
Storage humidity |
5%~95% |
5%~95% |
5%~95% |
|
Shipping status |
Voltage: 48~51V/SOC:30%~50% |
Voltage: 48~51V/SOC:30%~50% |
Voltage: 48~51V/SOC:30%~50% |
Packing

FAQ
As one of the leading energy storage system manufacturers and suppliers in China, we warmly welcome you to wholesale or buy discount energy storage system from our factory. All customized products are with high quality and low price. Contact us for quotation and free sample.
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