hara
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3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 6:38 am

Hi,

New to the Leaf and this forum. Hello :)

I'm looking for ballpark numbers on charging times. My 2013 Leaf S has the 3.3 kW on-board charger and I saw that I can upgrade to 6.6 kW. My EVSE can deliver 7.2 kW (240V/30A). Now before throwing lots of money on the Leaf, I am curious if there is a table that gives me some input on how charging times change from empty to full between 3.3 and 6.6.

Can anybody point me in the right direction?

Thanks!
Last edited by hara on Sun May 26, 2013 7:26 am, edited 1 time in total.

dm33
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 6:59 am

AFAIK I think it's pretty much half the time. Not sure on the Leaf, but most other lithium ion batteries charge fast to 80% then slower after that. So I'd assume half the time up to 80%, not sure after that.

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TonyWilliams
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 7:03 am

LEAF Charge-Rate Chart
Assumes 30 amp pilot signal from EVSE


----------- Japan --- USA/Canada - The World --- USA/Canada
Amps --- 200 volts --- 208 volts --- 230 volts ------- 240volts

16 -------- 3.2kW -------- 3.3kW ---- 3.7kW ------ 3.8kW
27.5 ------ 5.5kW** ------ 5.7kW** --- 6.3kW ------ 6.6kW


Obviously, the charger will output some value below those stated above, at about 85-90%. So, a typical LEAF drawing 16 amps at your North American house's 240 volts will put 3.3kW into the battery, and draw 3.8kW from the wall.

The new 2013 LEAF with optional 27.5 amp charger will be about 6.6kW at 240 volts. The 2013 LEAF-S retains the 16 amp charger of all previous LEAFs.

**I don't know if its been measured at 200 or 208 volts yet to see if it increases to 30 amps.**

**********************************************************************

Miles Gained per Hour Charging


Amps/Volts -- Where ---- 65mph / 4 miles per kWh

12 / 120 ------- Any ------ 4.0 miles (supplied cable with car in USA/Canada)
12 / 208 ------ Public ----- 8.4 miles (EVSEupgrade.com 2011/12 LEAF)
12 / 240 ------ Home ----- 9.6 miles (EVSEupgrade.com 2011/12 LEAF)
16 / 208 ------ Public ----- 11.1 miles (EVSEupgrade.com 2011/12 LEAF)****
16 / 240 ------ Home ----- 12.9 miles (EVSEupgrade.com 2011/12 LEAF)
20 / 208 ------ Public ----- 14.1 miles (Clipper Creek LCS-25)
20 / 240 ------ Home ----- 16.3 miles (Clipper Creek LCS-25)
25 / 208 ------ Public ----- 17.8 miles (EVSEupgrade.com 2013 LEAF)
25 / 240 ------ Home ----- 20.6 miles (EVSEupgrade.com 2013 LEAF)
30 / 208 ------ Public ----- 21.4 miles (unverified at 30 amps**)
30 / 240 ------ Home ----- 22.7 miles (limited to 27.5 amps)


**** will likely pull 18 amps at 208 volts****

**I don't know if its been measured at 200 or 208 volts yet to see if it increases to 30 amps.**


**********************************************************************


Hours to charge LEAF with warm new condition battery
From Turtle mode ("dead") to 100%


Amps/Volts -- Where ---- Time

12 / 120 ------- Any ------ 22.8 hours (supplied cable with car in USA/Canada)
12 / 208 ------ Public ----- 11.4 hours (EVSEupgrade.com 2011/12 LEAF)
12 / 240 ------ Home ------ 9.9 hours (EVSEupgrade.com 2011/12 LEAF)
16 / 208 ------ Public ------ 8.6 hours (EVSEupgrade.com 2011/12 LEAF)****
16 / 240 ------ Home ------ 7.4 hours (EVSEupgrade.com 2011/12 LEAF)
20 / 208 ------ Public ------ 6.7 hours (Clipper Creek LCS-25)
20 / 240 ------ Home ------ 5.9 hours (Clipper Creek LCS-25)
25 / 208 ------ Public ------ 5.4 hours (EVSEupgrade.com 2013 LEAF)
25 / 240 ------ Home ------ 4.7 hours (EVSEupgrade.com 2013 LEAF)
30 / 208 ------ Public ------ 4.5 hours (unverified at 30 amps**)
30 / 240 ------ Home ------ 4.2 hours (limited to 27.5 amps)


**** will likely pull 18 amps at 208 volts****

**I don't know if its been measured at 200 or 208 volts yet to see if it increases to 30 amps.**
Last edited by TonyWilliams on Sun May 26, 2013 7:59 am, edited 3 times in total.

hara
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 7:24 am

TonyWilliams wrote: The new 2013 LEAF with optional 27.5 amp charger will be about 6.6kW at 240 volts.
But do those 6.6kW also apply to the 2013 Nissan Leaf S, which has the 3.3 kW on-board charger only?

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TonyWilliams
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 7:36 am

hara wrote:
TonyWilliams wrote: The new 2013 LEAF with optional 27.5 amp charger will be about 6.6kW at 240 volts.
But do those 6.6kW also apply to the 2013 Nissan Leaf S, which has the 3.3 kW on-board charger only?
The word "optional" being the key word. You have to pay about $1200 extra to get the 6.0/6.6kW onboard charger for the LEAF-S. The 3.3kW charger is a 16 amp pilot signal. I've edited my post above to reflect miles gained per hour and time to charge from zero to hero.

hara
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 9:05 am

Great updates! Thank you very much!

6.6 is clearly a faster option.

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evnow
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 10:20 am

hara wrote:I'm looking for ballpark numbers on charging times. My 2013 Leaf S has the 3.3 kW on-board charger and I saw that I can upgrade to 6.6 kW.
Can you actually upgrade to 6 kW (not 6.6, BTW) after buying S ? I thought the charger upgrade was a factory installed option.
1st Leaf : 2/28/2011 to 5/6/2013
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Volt : 3/25/2017 to 5/25/2018
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TomT
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 10:38 am

Unless you wanted to buy the parts and tackle it yourself, which would be prohibitively expensive, there is no way to get it after the fact.
evnow wrote:Can you actually upgrade to 6 kW (not 6.6, BTW) after buying S ? I thought the charger upgrade was a factory installed option.
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Tesla Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.

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TonyWilliams
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Sun May 26, 2013 10:39 am

evnow wrote:
hara wrote:I'm looking for ballpark numbers on charging times. My 2013 Leaf S has the 3.3 kW on-board charger and I saw that I can upgrade to 6.6 kW.
Can you actually upgrade to 6 kW (not 6.6, BTW) after buying S ? I thought the charger upgrade was a factory installed option.
I wish we would let the 6.0kW / 6.6kW issue die a peaceful death. Nissan markets the charger as a 6.6kW. That's the max it will pull from the wall socket. No, it doesn't match up with "3.3kW" nomenclature, since that can pull up to 3.8kW from wall socket.

If we're going to really split hairs, it's an "up to" 6.6kW charging system, since it can and does pull significantly less in many different conditions that I've outlined a few posts up. There's plenty more to split. If the battery is cold or seriously degraded, that 6.0/6.6kW charger won't put 6.0kW into the battery.

Tesla uses the same "from the wall socket" rating on their equipment, too: 40 amps at 250 volts is 10kW. But, just like the LEAF, it will be far less than that at lower voltages and with less than 40 amp pilot signals. By the same token, increasing the voltage to 277 volts used by virtually every street light in the USA/Canada lowers the amps the 36 so as not to exceed 10kW.

Lets just simply explain the nomenclature differences to newbies, and leave it at that.

trekker56
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Re: 3.3 vs 6.6 KW on-board charger - charging times?

Mon May 27, 2013 5:02 am

Hi guys, so I have a 240V NEMA 14-50 in my garage already. What are my options to charge the LEAF can the charging cable / brick that comes with it be easily/cheaply upgraded?

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