Ebike charger QOLTEC 50332 — 36V/42V output, 2A, 5.5×2.1 mm plug

The QOLTEC 50332 Ebike charger is a compact power adapter that supplies a selectable 36V or 42V DC output at 2A through a 5.5×2.1 mm plug. It is designed to recharge compatible lithium and lead-acid e-bike battery packs with a steady current, providing basic protection against short circuit and overload. The charger is suitable for routine home and workshop use to restore battery charge and keep an e-bike ready for use.

Advantages

The charger offers selectable voltage output (36V/42V) to match different battery charger inputs and a consistent 2A charging current for controlled recharging. Its 5.5×2.1 mm DC plug is a common connector type that ensures straightforward connection to compatible battery sockets. Built-in basic safety features protect against short circuit and overload, and the compact design makes it convenient to store and use in limited spaces.

Suitable for

• Charging compatible 36V and 42V e-bike battery packs with a 5.5×2.1 mm connector
• Home charging and battery maintenance between rides
• Workshop use for testing and topping up e-bike batteries

Key specifications

• Output voltage: selectable 36V or 42V DC
• Output current: 2A
• Connector type: 5.5×2.1 mm DC plug
• Compatible battery chemistries: lithium and lead-acid battery packs
• Protection features: short circuit and overload protection
• Intended use: indoor charging (home, workshop)

How to use

Confirm that the e-bike battery is compatible with a 36V or 42V charging input and that the 5.5×2.1 mm plug fits the battery socket. Select the required output voltage on the charger if a selector is present, connect the charger plug to the battery socket, then plug the charger into an appropriate AC outlet. Allow the battery to charge until its recommended state of charge is reached. Disconnect the AC power first, then the DC plug from the battery when charging is complete. Follow the battery manufacturer's guidelines for charging time and procedures.

Recommendations

Use the charger indoors in a dry, well-ventilated area and avoid exposing it to moisture or extreme temperatures. Do not modify the charger or the connector, and avoid leaving the charger continuously connected to the battery for extended periods beyond the recommended charge time. Regularly inspect the cable and plug for damage and discontinue use if any defects are found.