3.85V 4400mAh High-Voltage Li-Polymer Battery Pack for High-End Portable Devices


Technical Specifications:

  • Chemistry: Li-pol

  • Nominal Voltage: 3.85V

  • Nominal Capacity: 4400mAh

  • Nominal Energy: 16.94Wh

  • Max Charge Voltage: 4.4V
  • Discharge cut off voltage: 3.0V

  • Discharging temperature: -20~60℃
  • Dimension: about 6.3 × 59.6× 76.5 mm

  • Weight: about 70g 

 

The BAKTH-585973P-1S-3J represents the forefront of lithium-polymer battery technology, specifically designed for high-voltage platforms used in today's most advanced consumer electronics. With a nominal voltage of 3.85V and a substantial 4400mAh capacity, this single-cell pouch battery delivers up to 5% higher energy density than conventional 3.7V cells—all within the same compact footprint. Pre‑equipped with three precision‑welded nickel tabs (3J), it offers a ready‑to‑integrate power solution for tablets, ultrabooks, premium power banks, and other space‑constrained, high‑performance devices.

 

Why Choose This High‑Voltage Li‑Po Battery?
✔ Advanced 3.85V Technology – More power in the same space, enabling thinner, lighter product designs.
✔ Authentic High‑Capacity Cells – Full 4400mAh delivered, no inflated specs.
✔ Easy Integration – Pre‑welded nickel tabs eliminate spot‑welding hassles; compatible with standard soldering processes.
✔ Customization Ready – Available with custom connectors, wires, PCM, and even different tab positions for volume orders.
✔ Sustainable Choice – Long cycle life reduces e‑waste; RoHS compliant and free of hazardous substances.

Order Now and power your innovations with a trusted energy solution!

 

About US:

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, it has been dedicated to battery pack assembly and PCM/BMS design and production. It has a 5,000-square-meter self-owned factory equipped with automated production lines and SMT assembly lines.

  •  
  • Certificates:
  •  
  • FAQ:
  • 1. What kind of certificate your battery pack owned?
    Re: ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB, our battery pack have reliable quality assurance.

    2. Do you have MOQ?
    Re: No limitation, we will check the best price for you based on your order quantity. We warmly welcome sample order to test our quality before bulk order.

    3. What’s the warranty? How can we guarantee quality?
    Re: Normally will be 12 months, for some special products can be further negotiated accordingly. A complete production process to ensure the quality before shipment.

     
  • 4. What’s the lead time?
    Re: Standard products: sample order will be 3~4 weeks based on the battery cell in stock, 5~8 weeks for bulk order according to different models and quantity.

    5. Can we have our own Logo on the battery pack? Can you accept customized battery?
    Re: Yes, of course. BAKTH Technology has professional R&D team which could provide you the most suitable solution according to your requirements. Customized battery requirements are warmly welcomed!

Technical Specifications:

  • Chemistry: Li-pol

  • Nominal Voltage: 3.85V

  • Nominal Capacity: 4400mAh

  • Nominal Energy: 16.94Wh

  • Max Charge Voltage: 4.4V
  • Discharge cut off voltage: 3.0V

  • Discharging temperature: -20~60℃
  • Dimension: about 6.3 × 59.6× 76.5 mm

  • Weight: about 70g 

 

The BAKTH-585973P-1S-3J represents the forefront of lithium-polymer battery technology, specifically designed for high-voltage platforms used in today's most advanced consumer electronics. With a nominal voltage of 3.85V and a substantial 4400mAh capacity, this single-cell pouch battery delivers up to 5% higher energy density than conventional 3.7V cells—all within the same compact footprint. Pre‑equipped with three precision‑welded nickel tabs (3J), it offers a ready‑to‑integrate power solution for tablets, ultrabooks, premium power banks, and other space‑constrained, high‑performance devices.

 

Why Choose This High‑Voltage Li‑Po Battery?
✔ Advanced 3.85V Technology – More power in the same space, enabling thinner, lighter product designs.
✔ Authentic High‑Capacity Cells – Full 4400mAh delivered, no inflated specs.
✔ Easy Integration – Pre‑welded nickel tabs eliminate spot‑welding hassles; compatible with standard soldering processes.
✔ Customization Ready – Available with custom connectors, wires, PCM, and even different tab positions for volume orders.
✔ Sustainable Choice – Long cycle life reduces e‑waste; RoHS compliant and free of hazardous substances.

Order Now and power your innovations with a trusted energy solution!

 

About US:

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, it has been dedicated to battery pack assembly and PCM/BMS design and production. It has a 5,000-square-meter self-owned factory equipped with automated production lines and SMT assembly lines.

  •  
  • Certificates:
  •  
  • FAQ:
  • 1. What kind of certificate your battery pack owned?
    Re: ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB, our battery pack have reliable quality assurance.

    2. Do you have MOQ?
    Re: No limitation, we will check the best price for you based on your order quantity. We warmly welcome sample order to test our quality before bulk order.

    3. What’s the warranty? How can we guarantee quality?
    Re: Normally will be 12 months, for some special products can be further negotiated accordingly. A complete production process to ensure the quality before shipment.

     
  • 4. What’s the lead time?
    Re: Standard products: sample order will be 3~4 weeks based on the battery cell in stock, 5~8 weeks for bulk order according to different models and quantity.

    5. Can we have our own Logo on the battery pack? Can you accept customized battery?
    Re: Yes, of course. BAKTH Technology has professional R&D team which could provide you the most suitable solution according to your requirements. Customized battery requirements are warmly welcomed!

Detailed Product Description

no data

ㅤRelated Products

BAKTH-T10-3.8V-3000mAh-11.4Wh-5.jpg

BAKTH-T10-635061-PACK 3.8V 3000mAh Replacement Li-ion Battery Pack for Portable Electronics-BAKTH-T10-635061-PACK

BAKTH-T10-635061-PACK 3.8V 3000mAh Replacement Li-ion Battery Pack for Portable Electronics

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.8V Nominal Capacity: 3000mAh Nominal Energy: 11.4Wh Max Charge Voltage: 4.35V Discharge cut off voltage: 3.0V Discharging temperature: -20~60℃ Dimension: about 6.85 × 53.6 × 65.6 ...

BAKTH-18650CR-35E-10S2P-36V-7000mAh-252Wh-1.jpg

Certificated High-Capacity 36V 7000mAh 18650 Lithium Battery Pack for Power Tools-BAKTH-18650CR-35E-10S2P

Certificated High-Capacity 36V 7000mAh 18650 Lithium Battery Pack for Power Tools

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 36V Nominal Capacity: 7000mAh Nominal Energy: 252Wh Max Charge Voltage: 42V Discharge cut off voltage: 25V Discharging temperature: -40~60℃ Dimension: about 72.8 × 87 × 196 mm Weigh...

1.jpg

Custom Support BAKTH-18650-10S2P-2T 36V 4400mAh Li-ion Battery Pack for Power Tools-BAKTH-18650-10S2P-2T

Custom Support BAKTH-18650-10S2P-2T 36V 4400mAh Li-ion Battery Pack for Power Tools

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 36V Nominal Capacity: 4400mAh Nominal Energy: 158.4Wh Max Charge Voltage: 42V Discharge cut off voltage: 25V Discharging temperature: 0~45℃ Dimension: about 60 × 75 × 140 mm Weight:...

BAKTH-18650-4S6P-2DC (1).jpg

Industrial 14.4V 10400mAh 18650 4S6P Li-ion Battery Pack with Dual DC Outputs-BAKTH-18650-4S6P-2DC

Industrial 14.4V 10400mAh 18650 4S6P Li-ion Battery Pack with Dual DC Outputs

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 14.4V Nominal Capacity: 10400mAh Nominal Energy: 149.76Wh Max Charge Voltage: 16.8V Discharge cut off voltage: 11.2V Dimension: about 42 × 78 × 245 mm Weight: about 1300g The BAKTH-...

BAK-NCM18490-2S1P (2).jpg

NCM18490-2S1P Mid-Voltage Compact 7.2V 1600mAh Rechargeable Li-ion Battery Pack-NCM18490-2S1P

NCM18490-2S1P Mid-Voltage Compact 7.2V 1600mAh Rechargeable Li-ion Battery Pack

Technical Specifications: Chemistry: NCM Nominal Voltage: 7.2V Nominal Capacity: 1600mAh Nominal Energy: 11.52Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.6V Dimension: about 19 × 51 × 37 mm Weight: about 70g Engineered for applic...

BAKTH-18650-2S2P-2 (2).jpg

BAKTH-18650-2S2P-2 Industrial 7.2V 6200mAh Rechargeable Battery Pack for Portable Power Systems-BAKTH-18650-2S2P-2

BAKTH-18650-2S2P-2 Industrial 7.2V 6200mAh Rechargeable Battery Pack for Portable Power Systems

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.2V Nominal Capacity: 6200mAh Nominal Energy: 44.64Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.6V Dimension: about 21 × 75 × 68 mm Weight: about 500g The BAKTH-18650-2...

BAK-NCM18490-1S1P-3.6V-1600mAh-5.76Wh_2-768x768.jpg

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery for -BAK-NCM18490-1S1P

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery for

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.6V Nominal Capacity: 1600mAh Nominal Energy: 5.76Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.75V Discharging temperature: -40~60℃ Dimension: about 52x18.5 mm Weight: ...

BAK-NCM18490-1S1P-3.6V-1600mAh-5.76Wh_2-768x768.jpg

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery-BAK-NCM18490-1S1P

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.6V Nominal Capacity: 1600mAh Nominal Energy: 5.76Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.75V Discharging temperature: -40~60℃ Dimension: about 52x18.5 mm Weight: ...

BAKTH-425869-3S-PACK-11.55V-2930mAh-33.84Wh-1.jpg

Compact BAKTH-425869-3S-PACK 11.55V 2930mAh Rechargeable Li-ion Battery Pack -BAKTH-425869-3S-PACK

Compact BAKTH-425869-3S-PACK 11.55V 2930mAh Rechargeable Li-ion Battery Pack

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 11.55V Nominal Capacity: 2930mAh Nominal Energy: 33.84Wh Max Charge Voltage: 13.2V Discharge cut off voltage: 9.0V Discharging temperature: -30~65℃ Dimension: about 18 × 62.2× 84.9 m...

BAKTH-N18650CR-2S6P-2E-7.2V-20160mAh-145.152Wh _2.jpg

Wide-Temp -40~70℃ 7.2V 20.16Ah Li-ion Battery Pack for Arctic & Desert Equipment-BAKTH-N18650CR-2S6P-2E

Wide-Temp -40~70℃ 7.2V 20.16Ah Li-ion Battery Pack for Arctic & Desert Equipment

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.2V Nominal Capacity: 20160mAh Nominal Energy: 38.48Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.0V Discharging temperature: -40~70℃ Dimension: about 67 × 56 × 83.5 mm ...

BAKTH-HL18650V-2P-3J-3.6V-4000mAh-14.4Wh-2.jpg

2P HL18650V Cells 3.6V 5600mAh Rechargeable Battery Pack for Medical Devices-BAKTH-HL18650V-2P-3J

2P HL18650V Cells 3.6V 5600mAh Rechargeable Battery Pack for Medical Devices

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.6V Nominal Capacity: 5600mAh Nominal Energy: 20.16Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.75V Discharging temperature: -40~85℃ Dimension: about 21 × 38 × 67 mm We...

BAKTH-18650-35T-2S5P-2C-7.2V-16750mAh-120.6Wh-5.jpg

7.2V 16.75Ah BAKTH-18650-35T-2S5P-2C High-Power Li-ion Battery Pack for High-Drain Power Tools-BAKTH-18650-35T-2S5P-2C

7.2V 16.75Ah BAKTH-18650-35T-2S5P-2C High-Power Li-ion Battery Pack for High-Drain Power Tools

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.2V Nominal Capacity: 16750mAh Nominal Energy: 120.6Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.0V Discharging temperature: -40~60℃ Dimension: about 52 × 75 × 72 mm We...

BAKTH_2P505081-14-3.7V-10400-mAh-38.48-Wh_1.jpg

Slim 3.7V 5000mAh 2P505081 Replacement Li-ion Battery for Electronic Equipment-BAKTH-2P505081-14

Slim 3.7V 5000mAh 2P505081 Replacement Li-ion Battery for Electronic Equipment

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.7V Nominal Capacity: 5000mAh Nominal Energy: 18.5Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.8V Discharging temperature: 0~45℃ Dimension: about 11 × 51 × 86 mm Weight...

BAKTH-455671P-2S2P-3M (4).jpg

BAKTH-455671P-2S2P-3M 7.4V 5000mAh High-Density Li-ion Battery Pack for Portable Devices-BAKTH-455671P-2S2P-3M

BAKTH-455671P-2S2P-3M 7.4V 5000mAh High-Density Li-ion Battery Pack for Portable Devices

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.4V Nominal Capacity: 5000mAh Nominal Energy: 37Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.6V Discharging temperature: 0~45℃ Dimension: about 20 × 58 × 77 mm Weight: ...

2.jpg

Massive 10400mAh 3.7V Rechargeable 1S4P 18650 Cells Battery Pack for DIY Power Stations-BAKTH-18650-1S4P-R1

Massive 10400mAh 3.7V Rechargeable 1S4P 18650 Cells Battery Pack for DIY Power Stations

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.7V Nominal Capacity: 10400mAh Nominal Energy: 38.48Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.8V Discharging temperature: 0~45℃ Dimension: about 20 × 38 × 143 mm Wei...

BAKTH-T10-3.8V-3000mAh-11.4Wh-5.jpg

BAKTH-T10-635061-PACK 3.8V 3000mAh Replacement Li-ion Battery Pack for Portable Electronics-BAKTH-T10-635061-PACK

BAKTH-T10-635061-PACK 3.8V 3000mAh Replacement Li-ion Battery Pack for Portable Electronics

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.8V Nominal Capacity: 3000mAh Nominal Energy: 11.4Wh Max Charge Voltage: 4.35V Discharge cut off voltage: 3.0V Discharging temperature: -20~60℃ Dimension: about 6.85 × 53.6 × 65.6 ...

BAKTH-18650CR-35E-10S2P-36V-7000mAh-252Wh-1.jpg

Certificated High-Capacity 36V 7000mAh 18650 Lithium Battery Pack for Power Tools-BAKTH-18650CR-35E-10S2P

Certificated High-Capacity 36V 7000mAh 18650 Lithium Battery Pack for Power Tools

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 36V Nominal Capacity: 7000mAh Nominal Energy: 252Wh Max Charge Voltage: 42V Discharge cut off voltage: 25V Discharging temperature: -40~60℃ Dimension: about 72.8 × 87 × 196 mm Weigh...

1.jpg

Custom Support BAKTH-18650-10S2P-2T 36V 4400mAh Li-ion Battery Pack for Power Tools-BAKTH-18650-10S2P-2T

Custom Support BAKTH-18650-10S2P-2T 36V 4400mAh Li-ion Battery Pack for Power Tools

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 36V Nominal Capacity: 4400mAh Nominal Energy: 158.4Wh Max Charge Voltage: 42V Discharge cut off voltage: 25V Discharging temperature: 0~45℃ Dimension: about 60 × 75 × 140 mm Weight:...

BAKTH-18650-4S6P-2DC (1).jpg

Industrial 14.4V 10400mAh 18650 4S6P Li-ion Battery Pack with Dual DC Outputs-BAKTH-18650-4S6P-2DC

Industrial 14.4V 10400mAh 18650 4S6P Li-ion Battery Pack with Dual DC Outputs

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 14.4V Nominal Capacity: 10400mAh Nominal Energy: 149.76Wh Max Charge Voltage: 16.8V Discharge cut off voltage: 11.2V Dimension: about 42 × 78 × 245 mm Weight: about 1300g The BAKTH-...

BAK-NCM18490-2S1P (2).jpg

NCM18490-2S1P Mid-Voltage Compact 7.2V 1600mAh Rechargeable Li-ion Battery Pack-NCM18490-2S1P

NCM18490-2S1P Mid-Voltage Compact 7.2V 1600mAh Rechargeable Li-ion Battery Pack

Technical Specifications: Chemistry: NCM Nominal Voltage: 7.2V Nominal Capacity: 1600mAh Nominal Energy: 11.52Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.6V Dimension: about 19 × 51 × 37 mm Weight: about 70g Engineered for applic...

BAKTH-18650-2S2P-2 (2).jpg

BAKTH-18650-2S2P-2 Industrial 7.2V 6200mAh Rechargeable Battery Pack for Portable Power Systems-BAKTH-18650-2S2P-2

BAKTH-18650-2S2P-2 Industrial 7.2V 6200mAh Rechargeable Battery Pack for Portable Power Systems

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.2V Nominal Capacity: 6200mAh Nominal Energy: 44.64Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.6V Dimension: about 21 × 75 × 68 mm Weight: about 500g The BAKTH-18650-2...

BAK-NCM18490-1S1P-3.6V-1600mAh-5.76Wh_2-768x768.jpg

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery for -BAK-NCM18490-1S1P

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery for

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.6V Nominal Capacity: 1600mAh Nominal Energy: 5.76Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.75V Discharging temperature: -40~60℃ Dimension: about 52x18.5 mm Weight: ...

BAK-NCM18490-1S1P-3.6V-1600mAh-5.76Wh_2-768x768.jpg

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery-BAK-NCM18490-1S1P

High Performance Cylindrical 3.6V 1600mAh NCM 18490 Rechargeable Lithium Battery

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.6V Nominal Capacity: 1600mAh Nominal Energy: 5.76Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.75V Discharging temperature: -40~60℃ Dimension: about 52x18.5 mm Weight: ...

BAKTH-425869-3S-PACK-11.55V-2930mAh-33.84Wh-1.jpg

Compact BAKTH-425869-3S-PACK 11.55V 2930mAh Rechargeable Li-ion Battery Pack -BAKTH-425869-3S-PACK

Compact BAKTH-425869-3S-PACK 11.55V 2930mAh Rechargeable Li-ion Battery Pack

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 11.55V Nominal Capacity: 2930mAh Nominal Energy: 33.84Wh Max Charge Voltage: 13.2V Discharge cut off voltage: 9.0V Discharging temperature: -30~65℃ Dimension: about 18 × 62.2× 84.9 m...

BAKTH-N18650CR-2S6P-2E-7.2V-20160mAh-145.152Wh _2.jpg

Wide-Temp -40~70℃ 7.2V 20.16Ah Li-ion Battery Pack for Arctic & Desert Equipment-BAKTH-N18650CR-2S6P-2E

Wide-Temp -40~70℃ 7.2V 20.16Ah Li-ion Battery Pack for Arctic & Desert Equipment

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.2V Nominal Capacity: 20160mAh Nominal Energy: 38.48Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.0V Discharging temperature: -40~70℃ Dimension: about 67 × 56 × 83.5 mm ...

BAKTH-HL18650V-2P-3J-3.6V-4000mAh-14.4Wh-2.jpg

2P HL18650V Cells 3.6V 5600mAh Rechargeable Battery Pack for Medical Devices-BAKTH-HL18650V-2P-3J

2P HL18650V Cells 3.6V 5600mAh Rechargeable Battery Pack for Medical Devices

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 3.6V Nominal Capacity: 5600mAh Nominal Energy: 20.16Wh Max Charge Voltage: 4.2V Discharge cut off voltage: 2.75V Discharging temperature: -40~85℃ Dimension: about 21 × 38 × 67 mm We...

BAKTH-18650-35T-2S5P-2C-7.2V-16750mAh-120.6Wh-5.jpg

7.2V 16.75Ah BAKTH-18650-35T-2S5P-2C High-Power Li-ion Battery Pack for High-Drain Power Tools-BAKTH-18650-35T-2S5P-2C

7.2V 16.75Ah BAKTH-18650-35T-2S5P-2C High-Power Li-ion Battery Pack for High-Drain Power Tools

Technical Specifications: Chemistry: Li-ion Nominal Voltage: 7.2V Nominal Capacity: 16750mAh Nominal Energy: 120.6Wh Max Charge Voltage: 8.4V Discharge cut off voltage: 5.0V Discharging temperature: -40~60℃ Dimension: about 52 × 75 × 72 mm We...

Send Message

* Name
Phone
* Email
Company
* Message