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UNDEC3120 B Lithium Battery ChargingAC/DC Power Adapters — Desktop & Wall-Mount
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UNDEC3120 B is a 120W lithium-ion battery charging AC/DC Power Adapters — Desktop & Wall-Mount. It features an IEC 320 C14 inlet-type AC input and supports CCCV charging, making it suitable for charging batteries in small to medium-sized devices and various other equipment. Equipped with multiple protection circuits, this high-efficiency product also meets DOE Level VI standards. In terms of safety standards, it complies with technical requirements such as PSE and IEC62368-1. Product series name:UNDEC3120 B Lithium Battery ChargingAC/DC Power Adapters — Desktop & Wall-Mount |
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Products details
| Size | L:174.7 W:72.3 H:35.1/mm (IEC 320 C14) |
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| AC Input Rating | 90V～264V |
| DC Output Rating |
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| Safety |
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If you are looking for products other than the above specifications, please contact our sales department.
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The UNDE 120W B Series is a desktop-type AC/DC adapter (120W) compatible with lithium battery charging for E-bikes and charging devices. It complies with safety standard 62368-1 and PSE Appendix Table 8. Four models are available with output voltages ranging from 13.6V to 54.6V, and two types are offered: UNDEC3120 B (C plug) and UNDET3120 B (T plug).
Designed for safe and highly efficient charging with CC/CV charging mode support, it is ideal for E-bikes and other lithium battery-powered charging equipment. Equipped with a power factor correction (PFC) circuit, it ensures excellent power quality. It complies with Energy Efficiency Level VI (ErP/DoE), EU Commission Regulation (EU) 2019/1782, and DOE 10 CFR Part 429 and 430. All models feature energy-saving design with no-load power consumption of 0.21W.
| UNIFIVE Reasons to Choose Us: As a power supply manufacturer with over 35 years of development experience, we provide comprehensive support from specification planning with mass production in mind to certification acquisition, production launch, and post-mass production follow-up. Based on standard products, we offer flexible supply ranging from small-lot prototyping and evaluation to small- and medium-scale production, as well as large-scale mass production. We also support semi-custom solutions and assist with power supply selection from the specification planning stage for mass production adoption. |
Key Features
1) Supports CC/CV Charging Mode - Lithium Battery Charging for E-bike Applications
This desktop-type AC/DC adapter features a safe and highly efficient charging design supporting CC (Constant Current) / CV (Constant Voltage) charging mode. It is optimized as a charging power supply for E-bikes and other lithium battery-equipped devices. It complies with the 62368-1 safety standard for ICT equipment and is suitable for information and communication technology equipment and audio/video equipment. Please contact our sales department for details on certification status for each model.
2) High Efficiency 88% Design - Supports Safe Charging
All four models achieve 88.00% efficiency with a high-efficiency design. Charging control via CC/CV mode prevents overcharging and supports safe lithium battery charging. The wide output voltage range from 13.6V to 54.6V accommodates various lithium battery pack configurations with different cell counts.
3) Equipped with Power Factor Correction (PFC) Circuit
Equipped with a power factor correction (PFC) circuit, achieving a power factor of 0.9 or higher at both AC100V and AC230V inputs. It reduces the impact of harmonic currents on the power line and ensures stable power quality. In the 120W class charger handling high power, it contributes to improved overall facility power efficiency.
4) EMC Compliance for ICT Equipment (CISPR 32, EN55035, BS EN55032, BS EN55035)
EMC standards comply with CE CISPR 32 EN55032, BS EN 55032 (emission), EN 55035, and BS EN 55035 (immunity) for ICT equipment. Also compliant with FCC Part 15 Class B and VCCI Class B. Compliance with BS EN standards supports certification for the UK market Products.
5) 13.6V-54.6V, 4 Output Models, 2 Types Available
Four output voltage models required for charging E-bike lithium batteries are available: 13.6V, 27.2V, 42.0V, and 54.6V, supporting various lithium battery pack configurations with different cell counts. Complies with Energy Efficiency Level VI (ErP/DoE), EU Commission Regulation (EU) 2019/1782, and DOE 10 CFR Part 429 and 430. Available in two types: UNDEC3120 B (C plug) and UNDET3120 B (T plug), both with dimensions of 174.70 x 72.30 x 35.10mm. Over-temperature protection (OTP) is available as an option.
Main Specifications
| Series Name | UNDE 120W B Series |
| Products Category | AC/DC Adapter for ITE and AV Equipment (Desktop Type, Lithium Battery Charging Compatible) |
| Rated Output | 120W |
| Key Features | CC/CV charging mode support, high-efficiency design, safe charging, PFC equipped |
| Main Applicable Equipment | E-bike, lithium battery-equipped charging devices |
| Operating Temperature Range | 0-40C (natural air cooling, sea level) |
| Technical Standards (Safety) | 62368-1, PSE Appendix Table 8 (Please contact our sales department for details of each model) |
| Energy Efficiency | Energy Efficiency Level VI (ErP/DoE), compliant with EU Commission Regulation (EU) 2019/1782, compliant with DOE 10 CFR Part 429 and 430 |
| Power Factor (PFC) | 0.9 or higher (at AC100V and AC230V input) |
| Emission | FCC Part 15 Class B / CE CISPR 32 EN55032 Class B / VCCI Class B / BS EN 55032 |
| Immunity | EN 55035 / BS EN 55035 |
| Protection Circuits | Short circuit protection / Overvoltage protection / Overcurrent protection / Over-temperature protection (optional) |
| Operating Environment | Input: AC100-240V (range: AC90-264V), 50/60Hz (range: 47-63Hz) / Storage temperature: -20-65C (natural air cooling, sea level) / Operating and storage humidity: 5-95%RH (no condensation) |
| Reference: Output Voltage, Current, Efficiency | 13.6V 8.8A (ripple 240mV, noise 240mV, efficiency 88.00%) / 27.2V 4.4A (ripple 360mV, noise 360mV, efficiency 88.00%) / 42.0V 3.0A (ripple 480mV, noise 480mV, efficiency 88.00%) / 54.6V 2.2A (ripple 480mV, noise 480mV, efficiency 88.00%) (output accuracy ±5%, no-load power consumption 0.21W) |
| Reference: Type and Dimensions | UNDEC3120 B (174.70 x 72.30 x 35.10mm), UNDET3120 B (174.70 x 72.30 x 35.10mm) |
| Other | RoHS 2 compliant |
Semi-Custom Support
Please feel free to contact us for specification confirmation, quotations, or sample requests. You can also view semi-custom case examples on our Customization Case Page.