Shenzhen Blumoti Energy Co., Ltd. is a leading Chinese manufacturer and supplier of 3.9v/4.45v high voltage lipo cells. If you are looking to source durable, bulk 3.9v/4.45v high voltage lipo cells from China, feel free to contact our factory for details. Custom orders are welcome.
A 4.45 V high-voltage cell is a battery cell with a full-charge cutoff voltage of up to 4.45 V. Its main advantage is higher energy density. Based on the equation Energy (Wh) = Voltage (V) × Capacity (Ah), with capacity held constant at 4000 mAh, the higher voltage alone delivers a 5.9% increase in energy versus a conventional 4.2 V cell. Most mainstream 4.45 V cells use modified lithium cobalt oxide (LCO) as the cathode material. At the higher operating voltage, more Li⁺ can be extracted, increasing capacity and thereby improving energy density. Upgrades in materials and manufacturing processes further enhance this gain. Taken together, these factors enable an energy density improvement of about 15–20% over 4.2 V cells.
4.45v 4000mAh Lipo battery – General Specifications
Nominal Voltage: 3.85V/3.9V
Charging Voltage: 4.45V
Discharge Cut-off Voltage: 2.75V / 3.0V
Nominal Capacity: 4000mAh (0.2C discharge)
Standard Discharge Rate: 0.2C–1C (800 –4000mAh )
Standard Charging Rate: 0.5C–1C (2000–4000mAh)
Protection Circuit: PCB/PCM, including overcharge, over-discharge, overcurrent, and short-circuit protection
Operating Temperature: 0–45°C (charging); -20–60°C (discharging)
Product parameters
|
Model NO. |
Capacity |
Nom.Voltage |
Cathode |
Thickness |
Width |
Length |
Energy Density |
|
BMP416391FL |
3900mAh |
3.9V |
LCO |
4.1mm |
63mm |
91mm |
655Wh/L |
|
BMP516076FL |
3950mAh |
3.9V |
LCO |
5.1mm |
60mm |
76mm |
670Wh/L |
|
BMP426391FL |
3950mAh |
3.9V |
LCO |
4.2mm |
63mm |
91mm |
648Wh/L |
|
BMP446284FL |
4000mAh |
3.9V |
LCO |
4.4mm |
62mm |
84mm |
689Wh/L |
|
BMP526377FL |
4000mAh |
3.9V |
LCO |
5.2mm |
63mm |
77mm |
626Wh/L |
|
BMP963870FL |
4000mAh |
3.9V |
LCO |
9.6mm |
38mm |
70mm |
618Wh/L |
|
BMP526080FL |
4200mAh |
3.9V |
LCO |
5.2mm |
60mm |
80mm |
664Wh/L |
|
BMP705074FL |
4250mAh |
3.9V |
LCO |
7mm |
50mm |
74mm |
648Wh/L |
|
BMP546376FL |
4300mAh |
3.9V |
LCO |
5.4mm |
63mm |
76mm |
656Wh/L |
|
BMP436590FL |
4400mAh |
3.9V |
LCO |
4.3mm |
65mm |
90mm |
690Wh/L |
|
BMP1235047FL |
4400mAh |
3.9V |
LCO |
12.3mm |
50mm |
47mm |
601Wh/L |
3.9V/4.45V High Voltage Lipo Cells Features
Higher energy density:
A 4000 mAh, 4.45 V high-voltage cell has an energy density of 600–700 Wh/L, compared with 450–550 Wh/L for conventional LiPo batteries, representing an improvement of 15–25%.
Greater design flexibility:
For the same energy requirement, a 4.45 V high-voltage cell occupies 15–25% less volume than a conventional LiPo battery, freeing up space for additional or more sophisticated modules and enabling more advanced device functions. Alternatively, it supports more compact and slimmer product designs.
Higher energy efficiency:
Based on the power equation P = V × I, for a given power level, a higher voltage requires less current. This helps reduce circuit heating and power loss, which can extend runtime for the same battery capacity.
Applications for 4000mah LiHv battery
A 4000j mAh, 4.45V high-voltage Li-polymer battery offers high energy density, but it also costs more than a conventional 4.2V battery. It is well suited for mid- to high-end compact portable smart devices that require both long battery life and a thin, lightweight form factor.
Smartphones
This is one of the most common applications. A 4000 mAh battery is a mainstream capacity for smartphones. Since smartphones need to balance battery life with slim design, adopting a 4.45 V high-voltage battery can help the product command a premium.
Ultrathin laptops and tablets
These devices require very thin designs, with extremely limited internal space. Higher energy density allows better use of the available space and can extend runtime within the same battery volume.
High-end handheld terminals
Examples include POS terminals, barcode scanners, PDAs, and industrial handheld devices.Typical examples include POS terminals, barcode scanners, PDAs, and industrial handheld devices. These products typically require full-shift battery life without adding bulk.
We provide what kinds of services
Flexible Customization: Customize the shape, size, capacity, voltage, BMS, connectors, and more to fit your needs.
Supply Capacity: Sample service available; bulk orders supported.
Comprehensive Service: Reliable after-sales follow-up, and a one-year warranty.
Business Support: OEM/ODM services available.
FAQ
Q1: Can high-voltage batteries used in portable devices such as smartphones be trusted for safety?
A1: Yes. Many mid-range to high-end smartphones already use high-voltage battery cells, and these cells have passed various safety certifications. You can purchase with confidence.
Q2: How much more do high-voltage cells cost compared with traditional 4.2V cells?
A2: In general, the total cost is about 15% to 35% higher, depending on factors such as size and specific design requirements.
Q3: Can high voltage be achieved with ternary cathode materials?
A3: Yes. High voltage can also be achieved using modified NCM 622 and NCM 811 cathode systems.
Q4: What is the lead time?
A4: Sample orders usually take 3–7 days, while bulk orders typically take 15–20 days.
Hot Tags: 3.9v/4.45v high voltage lipo cells, China 3.9v/4.45v high voltage lipo cells manufacturers, suppliers, factory
