Headeer BK20 Charger | Replacement Battery Adapter for E-Bike

Power up your Headeer BK20 e-bike safely with this official replacement charger. Features smart circuit protection, LED indicator, and fast 42V charging.

Keep your Headeer BK20 electric bicycle powered and road-ready with this high-performance replacement battery adapter. Engineered for optimal energy conversion, it delivers fast, stable, and safe charging whether at home or in the office.

Key Features

Tailored Compatibility: Designed specifically for the Headeer BK20 e-bike battery system, ensuring a seamless plug fit and precise voltage match.

Multi-Layer Safety Guard: Integrated smart chip automatically protects against over-charging, over-current, short circuits, and overheating.

LED Status Indicator: Clear visual notification—red light signals active charging; green light indicates full charge or standby.

Durable & Heat-Resistant: Constructed with high-grade fire-retardant ABS housing and efficient heat dissipation for long service life.

Portable Commuter Design: Lightweight and compact, ideal for carrying in a backpack, saddlebag, or commuter pannier.

Technical Specifications

Input Voltage: AC 100–240V ~ 50/60Hz (Universal)

Output Voltage: DC 42V / 2A (For standard 36V Li-ion battery pack)

Connector Type: Headeer BK20 standard round pin plug

Total Cable Length: 2.0 meters (approx. 6.5 ft)

Certifications: CE, RoHS, FCC