Commercial and industrial energy storage
Commercial and Industrial Energy Storage
1737451508966
Home Energy Storage
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Drones
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Telecom Backup Power
Low-Speed Electric Vehicles
Low-Speed Electric Vehicles
Compact RV Travel
RV Power
forklift
Forklift Truck
Lead To Lithium Conversion
Lead To Lithium Conversion

Portable Power Station

Compact and powerful, this portable unit delivers reliable electricity wherever it’s needed. It supports multiple charging options including solar input, making it perfect for outdoor adventures, emergency power, and mobile energy use.

Portable Energy Storage System

System Voltage: 409.6 V

Battery Energy: 300 Wh

Battery Type: LiFePOโ‚„ (Lithium Iron Phosphate)

Weight: 280.5 kg

Dimensions: 480 ร— 132 ร— 586 mm

Applications

RV Travel Power Supply
RV Travel Power Supply

A lightweight, high-capacity portable power station that meets all-day electricity needs on the road.

Camping Mobile Energy Hub
Camping Mobile Energy Hub

Your outdoor energy centerโ€”supports lighting, cooking appliances, and electronic devices simultaneously.

Balcony Gardening Power
Balcony Gardening Power

A convenient mobile power solution for automatic irrigation systems in balcony or rooftop gardens.

Pop-Up Market Booths
Pop-Up Market Booths

Plug-and-play design provides stable business power for temporary stalls and mobile shops.

Emergency Home Evacuation
Emergency Home Evacuation

A life-support power source thatโ€™s easy to carry during disasters or sudden evacuations.

Outdoor Family Activities
Outdoor Family Activities

Safe and reliable power for outdoor family timeโ€”making every trip fun, connected, and worry-free.

FREE DESIGN

Customized exclusive battery plans! Professional engineers plan battery programs one-on-one.

Maximize Drone Effect with Our Tailored Battery Solutions

EES-Propose-Requests
Propose Requests
Customized-Solution
Customized Solutions
End-to-End-Controlled-Production-Testing
End-to-End Controlled Production & Testing
Warehouse-and-shipped-out
Warehouse and shipped out

Explore Herewin Factory: The Source of Quality

Founded in 2019, Shenzhen Jarwin Time Technology Co., Ltd. is backed by a founding and operational team with over 20 years of extensive experience in the battery industry. It specializes in developing and producing high-performance lithium-ion polymer batteries.
Gain a comprehensive insight into who we are and what we stand for. By exploring the meticulous precision of our
production lines, the efficient management of our factories, and the genuine feedback from our satisfied customers,
youโ€™ll see how we ensure excellence at every step of the process

Different Services For Clients With Different Patterns

FOR OFFLINE CLIENTS

Flexible Delivery Time

Reliable delivery schedules and warehousing support.

High Cost-Effectiveness

Competitive pricing to maximize overall value.

Wide Product Selection

Diverse options to cater to all market segments.

FOR ONLINE CLIENTS

Low MOQ

Flexible MOQ with mixed product options.

Custom Logo

Personalized logo customization for small batches.

One-Stop Marketing Package

Provide quality images, videos to enhance sales revenue.

FOR BRAND CLIENTS

Exclusive Regional Rights

Provide all of herewin's resources and capabilities

R&D Resources

Custom sample within 7 days with R&D capabilities.

Fast Delivery

Efficient production and ship within 25 days at the fastest.

Production Flow of Home Energy Batteryโ€‹

Step1๏ผšUnpack-Materials
Step1๏ผšUnpack Materials

Open packaging, sort components.

Step2๏ผšFull-Visual-Inspection_
Step2๏ผšFull Visual Inspection

Inspect grouped cells for defects: leakage, scratches, dents, punctures, swelling.

Step3๏ผšVoltageResistance-Screening_
Step3๏ผšVoltage/Resistance Screening

Test cell voltage and internal resistance; rebalance cells with excessive voltage deviations.

Step4๏ผšTab-Punching
Step4๏ผšTab Punching

Punch holes in cell tabs using a stamping machine.

Step5๏ผšAdapter-Board-Assembly
Step5๏ผšAdapter Board Assembly

Mount cells onto adapter boards per specs, secure tightly with fiber tape.

Step6๏ผšTab-Alignment
Step6๏ผšTab Alignment

Fold tabs in half with a rubber mallet and align holes with PCB board positions.

Step7๏ผšScrew-Fastening
Step7๏ผšScrew Fastening

Secure aluminum plates to adapter boards with screws; verify torque.

Step8๏ผšFiberboard-Installation
Step8๏ผšFiberboard Installation

Wrap battery module with fiberboard and seal edges with fiber tape.

Step9๏ผšCasing-Integration
Step9๏ผšCasing Integration

Tilt module into lower casing, secure series wiring by loosening screws incrementally, apply silicone adhesive, fix top fiberboard, then fully insert into casing.

Step10๏ผšWiring-Connection
Step10๏ผšWiring Connection

Plug sensing wire terminals into sockets and secure with adhesive.

Step11๏ผšPerformance-Testing
Step11๏ผšPerformance Testing

Use a voltage tester to measure the maximum and minimum cell voltage difference of the battery pack (โ‰ค15 mV), followed by open-circuit voltage, AC impedance, and charge/discharge (including overcurrent) tests.

Step12๏ผšAging-Cycle
Step12๏ผšAging Cycle

Stabilize performance through cycling and screen for defects pre-final assembly.

Step13๏ผšCover-Installation
Step13๏ผšCover Installation

Attach top cover to casing with screws.

Step14๏ผšComprehensive-Functional-Testing
Step14๏ผšComprehensive Functional Testing

Verify communication, output voltage, temperature sensing, discharge curves, and leakage.

Step15๏ผšFinal-Visual-QA
Step15๏ผšFinal Visual QA

Inspect surface for flaws, check display buttons for smooth operation (no sticking).

Step16๏ผšPackaging
Step16๏ผšPackaging

Label units, place in foam-lined boxes, seal in PE bags with desiccant, add top foam padding.

Step17๏ผšShipping
Step17๏ผšShipping

Box approved units and dispatch.

LEARN MORE DETAIL

Learn more about production details and manufacturing process

Testing Process

Fair&Certification

Certifications are herewin’s greatest strength.
Meets the needs of all markets, and the source factories are fully certified to ensure quality

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GET IN TOUCH

Want to know what credentials your market needs? Contact me to send you a high resolution image

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FAQs

Does charging while driving affect the vehicleโ€™s power system?

The RV-dedicated battery (24V 300Ah) supports in-transit charging via the vehicleโ€™s alternator and a DC-DC charger. It does not affect driving performance. However, itโ€™s recommended to turn off the system after parking.

How do I choose a model for high-power camping appliances (like hot pot or grill)?

Choose a model with at least 30% higher output than your deviceโ€™s rated power (e.g., for a 1500W hot pot, go for 2000W+). Rotate appliances during use to avoid overload.

Can a single charge last the entire day for a market booth?
  • Small booths (24V 200Ah): Can support a mini freezer (โ‰ค100W) and POS system for 6โ€“10 hours.

  • Medium to large setups: Choose the 48V 400Ah version, or plan for a midday quick recharge.

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