charger for e-bikes 36 V Li‑ion, 42 V 2 A, connector 5.5 × 2.1 mm














charger for e-bikes 36 V Li‑ion, 42 V 2 A, connector 5.5 × 2.1 mm

Fast and safe charging 42 V / 2 A
The optimized 2 A charging current gently and efficiently recharges 36 V Li‑ion batteries with output up to 84 W, with stable regulation and protections.

5.5 × 2.1 mm connector for wide compatibility
Standard DC connector 5.5 mm (outer) × 2.1 mm (inner), pin length 10 mm – easy and secure connection to many e‑bike batteries.

Compact design with LED indication
The lightweight power adapter is easy to carry, and its LED indicator switches to green when fully charged for immediate status at a glance.
This portable e‑bike charger is designed for 36 V Li‑ion batteries and provides a stable 42 V / 2 A output (max power about 84 W). Thanks to its compact size, it fits easily in a backpack and can be used at home, at work, or on the go from a standard 230 V outlet. The built‑in LED indicator clearly shows the charging progress — it turns green once fully charged.
Electronic protection safeguards the battery during charging and helps extend its lifespan. Typical charging time for a 36 V battery is approximately 4–6 hours, depending on capacity and current state of charge.
- Safety and reliability: stable output parameters and protections during charging.
- Universal use: 230 V AC input, 42 V / 2 A output for 36 V Li‑ion.
- Practical LED indication: clear signaling when charging is complete.
- Travel‑friendly: lightweight, compact design for your backpack.
Tips for longer battery life: keep charge between 30–60%, avoid extreme temperatures, prefer partial charging (about 80–90%), and avoid leaving the battery connected unnecessarily overnight.
Specifications
- Purpose
- Charger for 36 V Li‑ion batteries (e‑bike)
- Output voltage
- 42 V DC
- Output current
- 2 A
- Maximum power
- approx. 84 W
- Input
- 230 V AC (EU mains outlet)
- Connector
- DC 5.5 × 2.1 mm, pin length 10 mm
- Indication
- LED — lights green when fully charged
- Approximate charging time
- 4–6 hours (depending on battery capacity and state)
- Protections
- Electronic protection during charging
- Design
- Compact portable adapter