Shenzhen First Tech Co., Ltd.
| Payment Terms | L/C,T/T |
| Supply Ability | 2000 pieces per month |
| Delivery Time | 15 days |
| Packaging Details | carton box |
| Safety Features | Overcharge Protection, Overdischarge Protection, Short Circuit Protection |
| Capacity | 15kWh |
| Chemistry | Lithium Ion |
| Certifications | CE, UL, IEC |
| Cycle Life | >5000 Cycles |
| Warranty | 5-10 Years |
| size | 740*395*250mm |
| Operating Temperature | -20°C To 55°C |
| Brand Name | 1stess |
| Model Number | RPES-WM2 (51.2V 300Ah) |
| Certification | CE, IEC |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T | Supply Ability | 2000 pieces per month |
| Delivery Time | 15 days | Packaging Details | carton box |
| Safety Features | Overcharge Protection, Overdischarge Protection, Short Circuit Protection | Capacity | 15kWh |
| Chemistry | Lithium Ion | Certifications | CE, UL, IEC |
| Cycle Life | >5000 Cycles | Warranty | 5-10 Years |
| size | 740*395*250mm | Operating Temperature | -20°C To 55°C |
| Brand Name | 1stess | Model Number | RPES-WM2 (51.2V 300Ah) |
| Certification | CE, IEC | Place of Origin | China |
| High Light | 48V 314Ah Lifepo4 battery ，15kWh wall mounted battery pack ，long life energy storage battery | ||
Shenzhen First Tech Co., Ltd was established in 2017, which is a one-stop solution provider of solar & battery energy storage system.
First Tech is engaged in the research, development, production, sales and service of the commercial and industrial energy storage system, home energy storage system, lithium-ion battery pack, solar hybrid inverter. solar optimizer etc.
First Tech is located in Shenzhen City, Guangdong Province, China, the factory have passed lS09001,1S014001,1S045001 managementsystem certification and the products have obtained TUV-CB, CEIEC,EMC MSDS, UN38.3, etc certificates. The products are exported toclients in such countries and regions as Europe, Africa, Middle East,North America,South America, Southeast Asia, etc.
Except providing it's own standard products, First Tech also welcome OEM & ODM orders, and will provide professional service and quality products with competitive prices to customers and market.
First Tech is committed to becoming a global leading solar & ESS solution provider to provide green energy and contribute to cleanerworld.
Enjoy New Life, Starting with First Tech!
Common Questions Regarding the Applicability of Battery Packs in Different Countries/Regions
Context: An archipelago with many islands relying on solar-battery systems, high humidity, and challenging logistics.
Q1 – Reporter: Ibu Sinta Dewi, Kompas
“For remote islands with no service technicians, how reliable is this battery and can it be monitored remotely?”
A: Its self-developed BMS ensures high reliability. Remote monitoring via cloud platform allows real-time alerts and diagnostics, reducing the need for onsite visits.
Q2 – Reporter: Bapak Joko Prasetyo, Republika
“What is the weight and dimensions? Can it be transported easily to remote villages?”
A: At 115kg and dimensions 740x380x250mm, it’s compact and can be moved with two persons. It’s suitable for boat and truck transport to most locations.
Q3 – Reporter: Ms. Dian Surya, Jakarta Post
“How does it handle frequent deep discharges in daily solar off-grid use?”
A: It’s rated for ≥6000 cycles at 90% DOD, making it ideal for daily deep cycling in off-grid solar systems common in Indonesian islands.
Q4 – Reporter: Mr. Agus Fernando, Tempo
“Is it safe to install in a household with limited electrical knowledge?”
A: Yes. It’s designed for floor mounting and comes with clear installation guides. We recommend using a certified installer for final connection.
Q5 – Reporter: Ibu Maya Ratnasari, Media Indonesia
“Can multiple units be connected to expand an existing system later?”
A: Yes, the modular design allows adding units in parallel up to 16, so you can start small and expand as your energy needs grow.
Context: Frequent typhoons, power outages, and growing home solar+storage market.
Q1 – Reporter: Mr. Luis Manzano, Philippine Daily Inquirer
“Can the battery operate during floods or very humid conditions?”
A: The IP20 rating is for indoor dry locations. It should be installed in a raised, protected area to avoid flooding. It handles up to 90% non-condensing humidity.
Q2 – Reporter: Ms. Carmina Reyes, Manila Bulletin
“What is the peak power output? Can it start motor loads like water pumps or air conditioners?”
A: Peak discharge current is 200A for 3 minutes, which translates to roughly 10kW peak power—sufficient to start most residential motor loads.
Q3 – Reporter: Mr. Pedro Santos, BusinessWorld
“Is it compatible with popular local inverters like those from Growatt or Solis?”
A: Yes, it’s compatible with most hybrid/battery inverters in the Philippine market. We provide communication cables and protocols for seamless integration.
Q4 – Reporter: Ms. Elena Gomez, The Philippine Star
“How long does installation take for a typical home system?”
A: With a pre-wired battery and standard connectors, installation can be completed in under 2 hours by a certified technician.
Q5 – Reporter: Mr. Ramon Cruz, Rappler
“What happens if the grid returns after an outage? Does it switch back automatically?”
A: Yes, when paired with a compatible hybrid inverter, the system will automatically resync with the grid and resume charging if needed.
Company Details
Year Established:
2017
Total Annual:
15000000-16000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
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