### Nissan Leaf - Charging.

Posted:

**Tue, 11 Jun 2013, 17:15**The Nissan Leaf has a 3.3KW on-board charger capable of drawing a maximum of 15 amps. It will recharge the 24KWH battery pack in 6 hours from a 15 amp power supply and 8 hours from a 10 amp power supply. The cable that comes with the Nissan Leaf is hardwired to draw a maximum of 9.75 amps and will not draw 15 amps even if it is plugged into a 15 amp socket.

The charging system on the Nissan Leaf is compatible with the Type 1(J1772) charging protocol which specifies standards for sockets, cables, plugs and communications between the car and the charging station. There is an extra wire in the cable that runs between the car and the station. This carries the communications or "pilot signal" that carries data between the car and the station including the amount of current in amps available from the station, 8, 10, 15 or 32amps. The on board charger in the car will adjust it's consumption accordingly and draw 10 amps from a 10amp charging station and 15 amps from a 15amp charging station.

There is no pilot signal available from a standard domestic electrical socket so the pilot signal in the EVSE(electric vehicle supply equipment) cable supplied with the Leaf is set to 9.75 amps. This is true even though the cable has a 15amp plug. This is why it takes the Leaf longer to charge using the cable. The car is drawing at around 9.75 amps using the cable compared to the the 15amps it would draw from a charging station.

The next version of the Nissan Leaf due for release in Australia in 2014 will have a more powerful on board charger( 6.6 kW) which will draw current at 32 amps. The car will charge in about four hours if connected to a 32 amp charging station. However there are no plans to upgrade the existing Nissan Leafs with 32amp chargers so all those Leaf's sold between now and 2014 will not be able to avail of 32 amp charging.

The charging system on the Nissan Leaf is compatible with the Type 1(J1772) charging protocol which specifies standards for sockets, cables, plugs and communications between the car and the charging station. There is an extra wire in the cable that runs between the car and the station. This carries the communications or "pilot signal" that carries data between the car and the station including the amount of current in amps available from the station, 8, 10, 15 or 32amps. The on board charger in the car will adjust it's consumption accordingly and draw 10 amps from a 10amp charging station and 15 amps from a 15amp charging station.

There is no pilot signal available from a standard domestic electrical socket so the pilot signal in the EVSE(electric vehicle supply equipment) cable supplied with the Leaf is set to 9.75 amps. This is true even though the cable has a 15amp plug. This is why it takes the Leaf longer to charge using the cable. The car is drawing at around 9.75 amps using the cable compared to the the 15amps it would draw from a charging station.

The next version of the Nissan Leaf due for release in Australia in 2014 will have a more powerful on board charger( 6.6 kW) which will draw current at 32 amps. The car will charge in about four hours if connected to a 32 amp charging station. However there are no plans to upgrade the existing Nissan Leafs with 32amp chargers so all those Leaf's sold between now and 2014 will not be able to avail of 32 amp charging.