High Quality Solar Battery Backup System for Home Cost

(1) Positive electrode: Positive electrode materials occupy a major position in lithium batteries. Their performance directly affects the various performance indicators of lithium batteries. One of the key technologies for developing high-energy lithium-ion batteries is the development of positive electrode materials. Active substances mainly refer to lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, lithium nickel oxide, and nickel cobalt manganese oxide. Common lithium-ion batteries are divided into the following three categories.



(2) Diaphragm: A special plastic film that allows lithium ions to pass through but is an insulator for electrons. Currently, there are mainly PE and PP and their combinations. There is also a type of inorganic solid diaphragm, such as alumina diaphragm coating, which is an inorganic solid diaphragm.



(3) Negative electrode: The active material mainly refers to graphite, lithium titanate, or carbon materials with a structure similar to graphite.

(4) Electrolyte: Generally an organic system, such as carbonate solvents dissolved with lithium hexafluorophosphate. Some polymer batteries use gel electrolytes;

(5) Battery shell: Mainly divided into hard shell (steel shell, aluminum shell, nickel-plated iron shell, etc.) and soft pack (aluminum-plastic film).

Energy storage company Ingrid Capacity is rapidly building battery storage parks. 14 parks will be operational this autumn. To optimize the use of these parks, the company is developing new digital tools and recruiting more data experts.

Ingrid Capacity recently opened a 12 MW battery park (12 MWh) outside Gävle, which is connected to Gävle Energi and approved by the Swedish National Grid. This is one of the company's 14 battery storage parks, totaling about 200 MW, which will be operational in autumn 2024 and will be used mainly for the fast-growing ancillary services market on the Swedish grid. In addition, another 200 MW of energy storage facilities will enter the construction phase this autumn. Since its establishment in 2022, the company has expanded rapidly with external funding and aims to install 8 GW of capacity across Europe by 2030.

Extremely data-driven

But the company’s expansion is not limited to hardware, with an increasing focus on software development – ​​using technologies such as artificial intelligence to develop new digital tools for grid analysis and trading to optimize battery use.

“We are extremely data-driven across the entire value chain,” said Andreas Langholz, Ingrid Capacity’s new head of digital strategy. “This is particularly important in our engagement with grid companies – we are able to show how battery storage can improve local infrastructure through data simulations and show the impact of different options on grid stability.”

Ingrid Capacity has already conducted similar data simulations across the country, analyzing factors such as power demand, grid sites, and demographic development, which provide a basis for the selection of locations for battery storage parks that are about to be put into operation.

Rapid development

According to Andreas Langholz, increasing the level of digitalization is a necessary condition for optimizing the operation of battery parks. Langholz previously led the application of AI in the energy and industrial sectors at McKinsey. He pointed out that energy companies need to pay more attention to the development of digitalization and AI, and said: "In the past year, technologies such as Chat GPT and generative AI have developed rapidly, and they can be widely used in internal processes such as document management, procurement and contract processing."

Ingrid Capacity plans to combine generative AI with machine learning, mathematical optimization and software development, and explore how to combine energy network simulation with visual recognition systems to discover the potential for improvement in power grid infrastructure.

Demand for IT developers

In the past six months, Ingrid Capacity has rapidly expanded its data team, with data experts and software developers accounting for an increasing proportion. By 2030, the company expects to hire 150 to 200 employees, of which the data team will be the largest part. However, finding the right IT talent is not easy.

"IT talent resources are limited, and we are looking for mathematicians, statisticians, data engineers with doctoral degrees, and talents familiar with infrastructure and API management." Langholz said.

He also advised other energy companies to ensure that they have modern infrastructure and high-quality data when using AI to develop data tools, and to start with a few projects and move forward step by step, while encouraging risk-taking.

Product Overview:

Huawen has independent research and development capabilities, and has developed a new generation of INR3A10 rechargeable lithium batteries that can replace 3 AAA Alkaline/Ni-MH/Ni-Cd batteries. It uses advanced science and technology to maintain an ultra-long service life, and will be very mature for the battery management system (BMS) and protection circuit technology. These systems can not only effectively manage the battery's charging and discharging process, but also ensure the safety of the battery during use and extend its service life. The INR3A10 rechargeable lithium battery has a large capacity and can provide stable input and output voltages until the entire battery is exhausted, and can be used in the device for a long time. With high-performance lithium-ion technology, the INR3A10 battery adopts a high energy density and low self-discharge design, making it an ideal choice for home electronic devices without memory effect.


LED Indicator: With advanced charging technology, it can be fully charged in just 1.8 hours, and has an LED indicator to show the charging status, charging - red, full - green.
Built-in USB-C port: It can be charged using a USB-C charging cable. The port supports fast charging technology, which can greatly shorten the charging time, ensuring that you can quickly resume using the device while on the go.
Material: The INR3A10 battery case is made of top-grade ABS material, which enhances its impact resistance. In addition, the battery case design meets international safety standards and can ensure stable performance even in extreme temperature and humidity conditions. In addition, the INR3A10 battery case has excellent sealing performance, effectively preventing liquid and dust intrusion and extending the battery life.



One INR3A10 rechargeable battery can replace 3 AAA traditional dry batteries

Huawen has its own independently developed BMS (battery management system) and protection circuit as well as optimized charging and discharging functions. It can be cycled more than 500 times, which is twice that of conventional batteries and 1000 times that of dry batteries. Multiple cycles of charging and use can greatly reduce users' battery costs and procurement time.

There are two solutions for INR3A10 rechargeable batteries to replace AAA batteries.

Solution 1: INR3A10 1000mAh USB-C rechargeable battery can replace 3S1P 3 AAA Alkaline/Ni-Mh/Ni-Cd batteries (with a nominal voltage of 1.5V).

Solution 2: INR3A10 1000mAh USB-C rechargeable battery can replace 1S3P 3 AAA Alkaline/Ni-Mh/Ni-Cd batteries (with a nominal voltage of 1.5V) 3.7V needs to be stepped down to 1.5V output, with a capacity of 2500mAh.

🔋 How to Choose Between Regulated or Wide Voltage Lithium Battery Packs?
In modern applications like smart devices, industrial equipment, and outdoor power, choosing the right lithium battery pack output is crucial. Huawen New Power helps you understand when to select a regulated voltage output versus a wide voltage range output.

🧭 Types of Battery Outputs
✅ Regulated Output
These packs include a built-in DCDC module to maintain constant output voltage (e.g. 12V/24V) regardless of battery level.

✅ Wide Voltage Output
The battery directly outputs its actual voltage, which drops as it discharges (e.g. 12.6V → 9V for a 3S pack). Suitable for voltage-tolerant devices.



📊 Comparison Table



Feature
Regulated Output
Wide Voltage Output


Voltage Stability
Stable
Varies with usage


Built-in Regulator
Yes
No


Best for
Networking, Medical, Sensors
Motors, LED, Outdoor Power


Efficiency
Lower (85-95%)
Higher


Cost
Higher
Lower



📦 Recommended Applications
Use Regulated Output for:

Routers and security cameras
Medical equipment
Precision electronics and sensors

Use Wide Voltage Output for:

LED lighting
Motors and fan drivers
Devices with internal regulators

📈 Voltage Drop Chart (3S Lithium Pack)

Tip: Devices must tolerate this voltage range if using unregulated output.
🤔 Selection Guide

🚀 Why Choose Huawen New Power?

Custom voltage ranges (3V to 72V)
Integrated BMS + regulated module design
High current & high efficiency support
CE, UN38.3, RoHS certifications
Flexible connectors and terminals

🧠 Expert Advice



Scenario
Recommended Output


Device needs fixed input voltage
Regulated Output


Device has built-in voltage tolerance
Wide Output


Cost-sensitive applications
Wide Output


Precision & medical equipment
Regulated Output



📞 Contact Us
Huawen New Power is ready to provide you with customized lithium battery pack solutions for any application scenario.

🌐 Website: www.huawennewpower.com

📧 Email: Olina.chang@huawennewpower.com

How to Choose the Right Connector for Your Battery Pack
Practical guidance for selecting connectors that ensure safety, low resistance, secure mating and manufacturability in lithium battery packs.

Category: Design & Manufacturing • Author: Huawen New Power

Why connector choice matters
Connectors are the interface between the battery pack and the rest of the system. The right connector minimizes contact resistance, prevents accidental disconnects, supports required current, and influences serviceability and safety certifications.



Key selection criteria

Continuous current rating: choose a connector rated above expected continuous current (use 125% margin).
Voltage rating: ensure insulation and creepage distances meet system voltage.
Contact resistance: lower is better; high resistance causes heating and power loss.
Mechanical locking & retention: latching or locking features prevent accidental disconnects in vibration environments.
Mating cycles: durability for service/maintenance (e.g., 50–500 cycles).
IP / environmental rating: waterproof or dustproof requirements for outdoor or harsh environments.
Temperature range & material: consider high-temp insulation and plated contacts (e.g., gold, nickel).
Polarization & keying: prevent reverse connection and assembly errors.
Ease of assembly: solder vs crimp vs screw terminals affect production speed and reliability.
Compliance & safety: UL, IEC or automotive standards as applicable.

Common connector families & typical uses



Connector
Strengths
Typical use


XT60 / XT90
Low contact resistance, high current (up to 60A/90A), polarized
RC, e-bike packs, high current modules


Anderson Powerpole / SB50
Modular, durable, hot-pluggable, high current
UPS, industrial, serviceable battery systems


DC Barrel / DC Jack
Simple, low-cost, widely used for low-power devices
Small UPS, chargers, consumer devices


JST / Molex Micro
Compact, good for signal & low current
BMS connectors, balance leads, sensors


M8 / circular
IP67 options, rugged, screw locking
Outdoor cameras, industrial sensors


USB-C (power delivery)
Versatile, standardized PD up to high wattages, reversible
Consumer devices, portable power stations



Design recommendations

Place high-current connectors away from sensitive electronics and thermal hotspots.
Use short, thick conductors to connectors and apply proper strain relief.
Where frequent mating is expected, select connectors with high mating-cycle ratings and easy access.
For serviceable packs, use connectors that allow polarity-safe, keyed mating to avoid assembly errors.
Consider using busbars for very high current main feeds and connectors for modular service lines.




Quick lookup
Rule of thumb: Connector continuous rating ≥ 125% of pack continuous current.

IP rating guide: IP20 for indoor; IP54+ for dusty/wet; IP67 for outdoor immersion.

🔌
Connector examples



Calculating contact heating & derating
Contact heating depends on contact resistance (mΩ) and current. Use P=I²R to estimate power loss. Add margin for ambient temperature and connector vendor derating tables.

Assembly & manufacturing notes

Prefer crimp + inspection for high-current terminations; solder joints are acceptable for low-current signals.
Use torque-specified screw terminals when applicable and lock washers to prevent loosening.
Implement polarity checks and keying in assembly fixtures to avoid wrong mating in production.

Connector testing checklist



Test
Purpose


Contact resistance
Verify low mΩ values and consistency


Temperature rise
Confirm acceptable heating under continuous current


Mating cycles
Validate durability across expected service life


Ingress protection
IP testing for outdoor-rated connectors



⚠️ Note: For safety-critical and transportable battery packs, validate connector choice against relevant standards (UL, IEC, UN transport regulations) and perform in-situ thermal testing.
Application recommendations



Application
Recommended connector families


Consumer UPS / small DC-UPS
Barrel, DC plug, USB-C (PD)


CCTV / PoE backup
M8 circular, DC jack, low-resistance custom plugs


High-current modules / e-bike
XT60/XT90, Anderson SB series, bolted busbars


BMS & balance leads
JST-SR, Molex Micro, IDC ribbon



Conclusion
Choosing the right connector balances electrical, mechanical and environmental demands. Start with current/voltage requirements, then refine by environmental ratings, mating cycles and manufacturability. When in doubt, consult connector vendors and perform real-world thermal testing.


Article by Huawen New Power. For custom connector solutions and battery pack design services, contact us via our website.