Product Description
Umini 36V 2A Lithium Battery Charger – 42V Output for 10S Li-NCM Packs
🔋 36V Lithium (10S NCM)
⚡ 42V / 2A
🔌 DC 2.1×5.5mm Jack
📏 Ultra-Compact: 120×69×45mm
✅ CE & ROHS Certified
⚡ 42V / 2A
🔌 DC 2.1×5.5mm Jack
📏 Ultra-Compact: 120×69×45mm
✅ CE & ROHS Certified
The Umini 36V 2A Lithium Battery Charger is an ultra-compact, high-efficiency charging solution specifically designed for 10S Lithium-ion (Li-NCM) battery packs (nominal 36V, full charge 42V). Delivering a precise 42V output voltage and 2A constant current, it features a three-stage smart charging algorithm (CC/CV/trickle) to ensure complete and safe charging without overcharging. The ultra-small aluminum alloy housing (120×69×45mm) provides excellent heat dissipation and durability while taking minimal space. Ideal for e-bikes, electric scooters, portable power tools, and DIY 36V lithium battery projects.
⚠️ Connector compatibility check: This charger comes with a DC 2.1×5.5mm barrel jack (center positive). Verify that your battery pack or device has a compatible input before purchasing. Custom DC connectors are available upon request.
⚙️ Technical Specifications
🔌 Input & Output
Input: 100-240VAC, 50/60Hz
Output Voltage: 42V (for 10S Li-NCM)
Output Current: 2A
Charging Power: ≈ 84W
Input: 100-240VAC, 50/60Hz
Output Voltage: 42V (for 10S Li-NCM)
Output Current: 2A
Charging Power: ≈ 84W
📏 Physical & Environment
Dimensions: 120 × 69 × 45 mm
Housing: Aluminum alloy (die-cast)
Working Temp: -5°C ~ +40°C
Storage Temp: -40°C ~ +70°C
Dimensions: 120 × 69 × 45 mm
Housing: Aluminum alloy (die-cast)
Working Temp: -5°C ~ +40°C
Storage Temp: -40°C ~ +70°C
⚡ Charging Mode & Efficiency
Mode: 3-stage: Constant Current → Constant Voltage → Trickle (Float)
Efficiency: ≥85% (full load), peak >90%
Cooling: Natural convection via aluminum housing
Mode: 3-stage: Constant Current → Constant Voltage → Trickle (Float)
Efficiency: ≥85% (full load), peak >90%
Cooling: Natural convection via aluminum housing
🛡️ Protections & Certifications
✔ Short circuit protection
✔ Overcurrent protection
✔ Overvoltage protection
✔ Reverse polarity protection (optional)
✔ CE, ROHS certified
✔ Short circuit protection
✔ Overcurrent protection
✔ Overvoltage protection
✔ Reverse polarity protection (optional)
✔ CE, ROHS certified
📋 Detailed Specifications
| Model | Umini |
|---|---|
| Battery Type | Lithium-ion (Li-NCM) – 10S configuration |
| Suitable Battery Voltage | 36V nominal (42V charging voltage) |
| Output Voltage (CV) | 42V ±0.2V |
| Output Current (CC) | 2A ±5% |
| Output Connector | DC 2.1×5.5mm barrel jack (center positive, customizable) |
| Input Voltage Range | 100-240VAC, 50-60Hz |
| Charging Algorithm | 3-stage: constant current → constant voltage → trickle/float |
| Efficiency | ≥85% @ full load, up to 90% typical |
| Operating Temperature | -5°C to +40°C |
| Storage Temperature | -40°C to +70°C |
| Housing Material | Aluminum alloy (die-cast), ultra-compact design |
| Certifications | CE, ROHS |
| Customization | AC power cord length/plug type, DC connector (2.1×5.5mm or others) available on request |
🌟 Key Features & Benefits
- Three-stage intelligent charging – constant current (CC), constant voltage (CV), and trickle/float mode ensure a full charge while preventing overcharging, extending battery lifespan.
- High-precision voltage/current lock – maintains accurate 42V cutoff and 2A current regulation for safe 10S Li-ion charging.
- Multiple safety protections – built-in short circuit, overcurrent, overvoltage, and optional reverse polarity protection for complete peace of mind.
- Ultra-compact & lightweight aluminum shell – dimensions only 120×69×45mm, excellent heat dissipation, robust and space-saving.
- High efficiency (>90% peak) – reduces energy waste, stays cool, and environmentally friendly.
- LED indicator display – clear visual status (red = charging, green = full / standby).
- Global input & customization – 100-240VAC works worldwide. AC cord and DC connector can be tailored to your specific requirements.
- CE & ROHS certified – meets international safety and environmental standards.
🔋 Common Applications
🛴 Electric Scooters & E-Bikes
Perfect for 36V (10S) lithium battery packs used in lightweight personal mobility.
Perfect for 36V (10S) lithium battery packs used in lightweight personal mobility.
🔧 Power Tools & Robotics
Compact size fits into cordless tool chargers and small robotic platforms.
Compact size fits into cordless tool chargers and small robotic platforms.
⚡ Portable Electronics & DIY Packs
Ideal for hobbyists building or maintaining 36V Li-ion battery packs for projects.
Ideal for hobbyists building or maintaining 36V Li-ion battery packs for projects.
🚲 Electric Skateboards & Hoverboards
Reliable charging for 36V board batteries with standard DC barrel connector.
Reliable charging for 36V board batteries with standard DC barrel connector.
💡 Customization options: The Umini charger can be tailored to your needs – choose different AC plug standards (US, EU, UK, AU, etc.), adjust AC cable length, or replace the DC 2.1×5.5mm jack with other connectors (DC 2.5×5.5mm, XLR, Anderson, etc.). Contact our sales team for bulk orders or OEM/ODM requests.
