16.8V 2A Lithium Battery Charger with LED Indicator for E-Bikes and E-Scooters

This 16.8V 2A lithium battery charger is built for electric bike and electric scooter batteries with a 16.8V charging voltage. That voltage matches 4S lithium packs – four cells wired in series. Output current is 2A, and a built-in LED indicator shows charging status at a glance.

The charger follows a constant current / constant voltage (CC/CV) profile. In other words, it is not a plain power adapter but a purpose-built charging device for lithium-ion cells. That distinction matters for battery health and for predictable charge cycles.

Important: the charging connector is not fixed. Therefore, state the connector model you need in your order comments. The charger then arrives fitted with a plug that matches your battery’s charging socket.

Key Benefits

• 16.8V charging voltage – matches the full-charge level of a 4S lithium battery pack.
• 2A charging current – steady, consistent charging for everyday riding.
• LED status indicator – charge state is visible immediately, with no extra measuring.
• Red light – charging is in progress.
• Green light – the battery is fully charged, or the charger is not yet connected to a pack.
• CC/CV charging profile – the current and voltage curve suits lithium-ion cells.
• Selectable connector – the plug model is chosen according to the note you leave at checkout.
• Dual use – works as a primary charger or as a spare for a second charging spot.

Who Is This Charger For?

This 16.8V 2A charger suits electric bike and electric scooter batteries built from 4S lithium cells. Such packs carry a nominal voltage of 14.4V or 14.8V. Their full charge voltage, however, is 16.8V. Riders who use a scooter or e-bike daily will get the most out of it.

Beyond daily use, it works well as a second charger at the office or on a trip. Many buyers also choose it after an original charger fails or goes missing. In each case, the charger replaces the function of the factory unit for 16.8V packs.

Two conditions decide compatibility. First, the battery charging voltage must be 16.8V. Second, the charging plug must match your battery’s charging socket. For that reason, the connector model has to be stated in your order comments.

Technical Specifications

Why Choose This 16.8V 2A Charger?

The main advantage is the precisely defined 16.8V charging voltage. It corresponds to the full charge level of a 4S lithium pack. As a result, charging follows a curve suited to lithium cells rather than the flat output of a generic adapter.

The second difference is the LED indicator. You can see the charge state right away: red means charging, green means finished. Consequently, there is no guesswork about when to unplug the battery.

The third advantage is the connector chosen for your device. Charging sockets differ between scooters and e-bikes, so you specify the plug model yourself. The charger then arrives ready to use straight out of the box.

Frequently Asked Questions

Which devices does this 16.8V 2A charger fit?

• Electric bike and electric scooter batteries with a 16.8V charging voltage.
• Packs built from 4S lithium cells with a nominal voltage of 14.4V or 14.8V.
• The connector must match your battery’s charging socket.

Is this charger suitable for 4S lithium batteries?

• Yes. 16.8V is exactly the full charge voltage of a 4S lithium pack.
• Four cells at 4.2V each add up to 16.8V.
• Check your battery specification before first use.

What do the LED colours mean?

• Red light – charging is in progress.
• Green light – the battery is fully charged.
• Green also shows when the charger is not yet connected to a battery.

Which charging connector will I receive?

• The plug is not fixed to one model.
• Write the connector model you need in your order comments.
• The charger is then prepared with that plug.

Can I use it on both an electric bike and an electric scooter?

• Yes, provided both batteries charge at 16.8V.
• Both packs must also use the same charging socket type.
• Otherwise a separate charger with a matching plug is needed.

How does it differ from a regular power adapter?

• It charges on a constant current / constant voltage principle.
• The output is set to the 16.8V lithium full-charge level.
• A plain adapter has no such charging profile or end-of-charge indication.

Can I keep it as a spare charger?

• Yes, many riders use it as a second unit at work or while travelling.
• It also replaces a lost or failed original 16.8V charger.
• The 2A output keeps everyday charging times consistent.

What should I check before ordering?

• Confirm that your battery charging voltage is 16.8V.
• Identify your charging socket type.
• Add the connector model to the order comments.

For riders running 4S lithium packs, this charger covers the two things that matter most: the correct 16.8V charging voltage and a plug that fits your socket. Add the connector model to your order comments, and it arrives ready for its first charge.