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.


System Voltage: 409.6 V
Battery Energy: 300 Wh
Battery Type: LiFePO₄ (Lithium Iron Phosphate)
Weight: 280.5 kg
Dimensions: 480 × 132 × 586 mm
Applications

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

Your outdoor energy center—supports lighting, cooking appliances, and electronic devices simultaneously.

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

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

A life-support power source that’s easy to carry during disasters or sudden evacuations.

Safe and reliable power for outdoor family time—making every trip fun, connected, and worry-free.
FREE DESIGN
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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,
you’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 Battery

Open packaging, sort components.

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

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

Punch holes in cell tabs using a stamping machine.

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

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

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

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

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

Plug sensing wire terminals into sockets and secure with adhesive.

Use a voltage tester to measure the maximum and minimum cell voltage difference of the battery pack (≤15 mV), followed by open-circuit voltage, AC impedance, and charge/discharge (including overcurrent) tests.

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

Attach top cover to casing with screws.

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

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

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

Box approved units and dispatch.
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Testing Process
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FAQs
The RV-dedicated battery (24V 300Ah) supports in-transit charging via the vehicle’s alternator and a DC-DC charger. It does not affect driving performance. However, it’s recommended to turn off the system after parking.
Choose a model with at least 30% higher output than your device’s rated power (e.g., for a 1500W hot pot, go for 2000W+). Rotate appliances during use to avoid overload.
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Small booths (24V 200Ah): Can support a mini freezer (≤100W) and POS system for 6–10 hours.
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Medium to large setups: Choose the 48V 400Ah version, or plan for a midday quick recharge.
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