As electric vehicles quickly become part of everyday life, on-board chargers are gaining increased public awareness. Here are answers to some common questions about them:

1. What is an on-board charger?

An on-board charger is a built-in electric vehicle (EV) charger used to recharge the EV’s battery.

2. How does an on-board charger work?

It converts AC power from an external source—such as a charging station or wall outlet—into DC power that can be stored in the EV’s battery.

3. Can I charge my EV using any on-board charger?

No. The on-board charger must be compatible with your specific EV model.

4. What is the charging time for an EV using an on-board charger?

Charging time depends on the battery size, current charge level, and the charger’s charging speed. Typically, a full charge takes between 1 and 12 hours.

5. Can an on-board charger be used to charge a hybrid vehicle?

Yes, hybrid vehicles also use on-board chargers to recharge their batteries.

6. What is the difference between an on-board charger and a DC fast charger?

An on-board charger is used for Level 1 and Level 2 charging and offers a slower charging speed. DC fast chargers provide Level 3 charging and can reach up to 80% charge in about 30 minutes.

7. Can a damaged on-board charger affect the battery life of an EV?

Yes. A damaged or faulty on-board charger may cause overcharging, undercharging, or overheating, which can reduce the battery’s lifespan. Proper maintenance and operation are important.

8. Can an on-board charger charge any battery chemistry?

No. The on-board charger must be compatible with the specific battery chemistry used in the EV.