ALL-IN-ONE Residential Energy Storage System
A comprehensive home energy solution combining battery storage and intelligent control. It supports both off-grid and grid-tied operation, with a modular design that allows for capacity expansion as needed. Engineered for excellent environmental resistance, it ensures reliable power in all weather conditions.


System Voltage: 48 V
Rated Capacity: 200Ah
Grid Connection: Off-grid / Hybrid
Type: All-in-One (Integrated)
Battery Type: LiFePO₄ (Lithium Iron Phosphate)
Weight: 85 kg
Dimensions: 480 × 280 × 1071 mm
Applications

Stable power supply that supports multiple high-power appliances running simultaneously.

Connect your electric vehicle and home energy—your car can even supply power back to the house in emergencies.

Smart charge and discharge strategies automatically select the best times to store and use energy.

Participate in a community microgrid to share clean energy with your neighbors.

A combined solar and storage system that enables complete energy self-sufficiency for your home.

A vital power lifeline for your home during extreme weather events like typhoons and earthquakes.
FREE DESIGN
Customized exclusive battery plans! Professional engineers plan battery programs one-on-one.
Maximize Drone Effect with Our Tailored Battery Solutions




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.
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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FAQs
Choose a large-capacity battery (48V 1000Ah) and connect an external generator as backup. On rainy days, prioritize essential loads like lighting and the fridge, and reduce use of high-power appliances.
Keep charge levels between 30% and 80%, routinely inspect wiring, and clean solar panels. Add a smart battery management system for automatic balancing and longer lifespan.
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