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UNDEC3120 B Lithium Battery ChargingAC/DC Power Adapter
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UNDEC3120 B is a 120W lithium-ion battery charging AC/DC Power Adapter. 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 standards such as PSE and IEC 62368-1. Product series name:UNDEC3120 B Lithium Battery ChargingAC/DC Power Adapter |
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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 equipment. It complies with safety standard 62368-1 and PSE Appendix Table 8. Four models are available with output voltages from 13.6V to 54.6V, and two types are offered: UNDEC3120 B (C plug) and UNDET3120 B (T plug).
Featuring a safe and highly efficient charging design compatible with CC/CV charging mode, it is ideal for charging devices equipped with lithium batteries, including E-bikes. 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 an energy-saving design with no-load power consumption of 0.21W.
| UNIFIVE Advantages: As a power supply manufacturer with over 35 years of development experience, we provide comprehensive support from specification review and certification acquisition to mass production launch and post-production follow-up, with mass production adoption in mind. Based on standard products, we offer flexible supply from small-lot prototyping and evaluation to small- and medium-scale production, as well as large-volume manufacturing. We also support semi-custom solutions and assist with power supply selection from the specification planning stage for mass production adoption. |
Key Features
1) CC/CV Charging Mode Compatible - Lithium Battery Charging for E-bikes
This desktop-type AC/DC adapter features a safe and highly efficient charging design compatible with CC (constant current) / CV (constant voltage) charging mode. It is optimized as a charging power supply for devices equipped with lithium batteries, including E-bikes and charging equipment. The safety standard complies with 62368-1 for ICT equipment and is suitable for information and communication technology equipment and audio/video equipment. For details on certifications for each model, please contact our sales department.
2) High Efficiency 88% Design - Supports Safe Charging
All four models achieve 88.00% efficiency. Charging control via CC/CV mode prevents overcharging and supports safe lithium battery charging. With a wide output voltage range from 13.6V to 54.6V, it accommodates lithium battery packs with various cell configurations.
3) Built-in 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 input. It reduces the impact of harmonic currents on the power line and ensures stable power quality. In 120W-class chargers handling high power, it contributes to improving overall facility power efficiency.
4) EMC Standards 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 Part15 Class B and VCCI Class B. Compliance with BS EN standards supports certification for the UK market Products.
5) 13.6V to 54.6V - Four Output Models - Two 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. Compliant with Energy Efficiency Level VI (ErP/DoE), EU Commission Regulation (EU) 2019/1782, and DOE 10 CFR Part 429 and 430. Two types are available: 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, Compatible with Lithium Battery Charging) |
| Rated Output | 120W |
| Key Features | CC/CV charging mode compatible, high efficiency design, safe charging, built-in PFC |
| Applicable Equipment | E-bike, lithium battery-powered charging equipment |
| Operating Temperature Range | 0 to 40C (natural air cooling, altitude) |
| Technical Standards (Safety) | 62368-1, PSE Appendix Table 8 (for details of each model, please contact our sales department) |
| Energy Efficiency | Energy Efficiency Level VI (ErP/DoE), compliant with EU Commission Regulation (EU) 2019/1782 and DOE 10 CFR Part 429 and 430 |
| Power Factor (PFC) | 0.9 or higher (at AC100V and AC230V input) |
| Emission (Radiated) | FCC Part15 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 / Over-voltage protection / Over-current protection / Over-temperature protection (optional) |
| Operating Environment | Input: AC100 to 240V (range: AC90 to 264V), 50/60Hz (range: 47 to 63Hz) / Storage temperature: -20 to 65C (natural air cooling, altitude) / Operating & storage humidity: 5 to 95%RH (non-condensing) |
| 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 & Dimensions | UNDEC3120 B (174.70 x 72.30 x 35.10mm), UNDET3120 B (174.70 x 72.30 x 35.10mm) |
| Others | RoHS 2 compliant |
Semi-Custom Support
For specification confirmation, quotations, or sample requests, please feel free to contact us. You can review examples of semi-custom solutions on our Customization Case Studies page.