The 36V 3A Li-on Battery Charger eBike is an intelligent, high-efficiency switch-mode power charger specifically designed for charging 10S (10-Series, 36V nominal) Lithium-ion and Lithium-Polymer (LiPo) battery packs used in electric bicycles (eBikes), electric scooters, hoverboards, and mobility equipment. Utilizing a precision two-stage Constant Current / Constant Voltage (CC/CV) charging profile, it maximizes charging speed while preventing overcharging and cell degradation. Built inside a durable, flame-retardant ABS/aluminum shell with comprehensive built-in protections (overvoltage, overcurrent, short-circuit, and reverse polarity), it safely and rapidly charges 36V battery packs ranging from 6 Ah to 25 Ah capacity.

Specifications

• Battery Compatibility: 10-Series (10S) Lithium-ion / LiPo Battery Packs (Nominal Voltage: 36.0 V – 37.0 V DC)
• Input Voltage Range: 100 V to 240 V AC, 50/60 Hz (Universal Worldwide AC Input)
• Rated DC Output Voltage: 42.0 V DC (±0.2 V Full Charge Voltage Cutoff)
• Nominal Battery Pack Voltage: 36 V DC (3.6V/3.7V per cell × 10 cells in series)
• Constant Output Current: 3.0 A DC (±0.2 A CC Mode)
• Rated Output Power: Approx. 126 W Max.
• Charging Profile / Algorithm: Precision 2-Stage CC/CV (Constant Current → Constant Voltage → Automatic Cutoff)
• Floating / Cutoff Threshold Current: Approx. 300 mA to 400 mA (Transitions to standby when full)
• Charging Efficiency: ≥ 85% to 88% at full load
• Status LED Indication:
  • Red Light: Actively Charging (CC / CV High-current phase)
  • Green Light: Fully Charged / Standby Mode / Disconnected
• Output Connector Options (Factory Dependent):
  • Standard DC 5.5 × 2.1 mm / 5.5 × 2.5 mm Barrel Plug
  • 3-Pin XLR / Aviation (GX16-3P) Plug (Pin 1: Positive +, Pin 2: Negative -)
  • Mickey Mouse / 3-Prong House-Type Plug (IEC C13)
• Mains AC Plug Type: UK Standard 3-Pin Fused Plug / EU 2-Pin Plug (BS 1363 / CE Certified)
• Cooling Method: Internal low-noise high-velocity cooling fan (Auto-activated under load) or Silent Aluminum Heat-sink convection
• Protection Mechanisms:
  • Over-Voltage Protection (OVP)
  • Over-Current Protection (OCP)
  • Short-Circuit Protection (SCP) with auto-recovery
  • Reverse-Polarity Protection (RPP)
  • Over-Temperature Cutoff (OTP at >75°C internal threshold)
• Operating Ambient Temperature: -10°C to +45°C
• Enclosure Material: High-Impact Flame-Retardant ABS Plastic (UL94V-0 Rated)
• Dimensions: Approx. 155 mm × 75 mm × 48 mm
• Net Weight: Approx. 380 g to 450 g

Features

• Optimized 10S CC/CV Charging Protocol: Charges with a steady 3.0A current up to 42.0V, then tapers current in CV mode to achieve 100?ll saturation without overvoltage stress on the battery management system (BMS).
• Faster Turnaround Than Standard 2A Chargers: Delivers 3.0A continuous output, reducing charging time by approximately 33% compared to standard factory 2A chargers (e.g., a 12 Ah battery pack charges in ~4 hours).
• Dual-Color Smart LED Status: Real-time visual tracking of charging states; switches cleanly from Red to Green upon full charge completion.
• Multi-Layer Safety Protection: Built-in intelligent protection circuit automatically shuts down power delivery during output shorts, reverse polarity connection, or internal thermal buildup.
• Integrated Thermal Management: Features built-in thermal cooling to maintain low internal component temperatures and prolong charger lifespan during extended high-current charging cycles.

Common Applications

• Electric Bicycles (eBikes): 36V hub motor and mid-drive commuter eBike battery packs (10S lithium configurations).
• Electric Scooters & Hoverboards: 36V folding e-scooters, self-balancing boards, and personal mobility vehicles.
• Electric Skateboards & Longboards: High-drain 36V / 10S DIY lithium skateboard battery enclosures.
• Custom DIY Lithium Power Packs: Charging 10S custom 18650, 21700, or prismatic lithium-ion battery banks with integrated BMS.
• Electric Wheelchairs & Mobility Aids: Replacement fast charger for lightweight 36V lithium-powered mobility chairs.

Usage Tips

• Voltage Compatibility Verification (CRITICAL):
  • This charger outputs 42.0V DC and is strictly designed for 36V (10S) Lithium-ion battery packs.
  • Do NOT use this charger on 48V (13S/14S) battery packs (will not charge), 24V (7S) packs (will overcharge/cause fire), or 36V Lead-Acid/SLA batteries (which require a 44V+ float charge profile).
• Connector Pinout & Polarity Check (MANDATORY): Before plugging into your eBike, use a digital multimeter to verify that the output connector's polarity matches your battery port (e.g., Center Positive for DC barrel jacks, Pin 1 Positive / Pin 2 Negative on XLR plugs). Connecting reversed polarities can damage the charger or blow the battery's BMS fuse.
• Connection Sequence:
  • Step 1: Plug the charger's DC output connector into the eBike / battery charging port first.
  • Step 2: Plug the AC power cord into the wall outlet and turn on mains power.
  • Step 3: When charging is complete (LED turns solid Green), disconnect the AC plug from the wall first before unplugging the DC connector from the battery.
• Ventilation & Thermal Care: Always place the charger on a hard, flat, open surface during operation. Never cover the charger with bags, cloth, or place it on soft beds/carpets, as restricting ventilation will lead to thermal throttling or cutoff.
• Battery BMS Prerequisite: Ensure the target battery pack is equipped with a functional Battery Management System (BMS) for individual cell balancing and secondary overcharge protection.