Great information Cora. If it did not overheat in those temperatures it is not going to have problems any where. CATL did a great job on those batteries. Thx
Yeah, in order to ensure the accuracy of the test results and eliminate the interference of accidental factors, we will do two more such fast charging test soon, please continue to follow my channel, thank you.
@@CoraLiu-VIVNE I've seen such a test with an OEM 62 kWh Leaf: after a 230 km highway trip, battery temperature raised from 25 to 37°C. At 40°C and 20% SOC it could charge @40 kW... but when battery reached 47°C and 60% SOC, charging power dropped to 20 kW, affecting trip duration. If your LFP cells are not designed for charging @ more than 150-200 A, you'll definitly need an efficient battery cooling system in order to charge @ 40-50 KW from 20 to 85% SOC. E-NV200 OEM pack has liquid cooling... but is very poorly managed: you can do better reverse-engineering its CAN commands...😉 🤞👋
Next time watch some videos from Bjorn. As far as I could check, the initial charge speed was ~40kW. It would be good to have a charging curve because total charge time is meaningless...nobody charges to 100% on a fast charger.
Thank you for your valuable suggestions. This is our first fast charging test, we ignored the charging curve at that time. Next we will do the same test two more times, and the charging curve will be shown in the video, please kindly continue to follow this channel, thank you.
@@CoraLiu-VIVNE Great! I like your R&D but I need to fill some holes on the information you provide in order to make a judgement for the next ~2 years....the timeline I would need a swap on my 2014 Leaf.
@@fernandinand Thank you for your like and I understand your thought, we will update the video every week, please continue to follow my channel, also you can add my WhatsApp: +8615211174371 or send me Email: cora@vivnevs.com for any question, thank you!
Dear Cora, for people who can afford home charging (eg for a charge current of 20Amps during 10 hrs at night) who wants to achieve optimal 60kWh battery life time (so not charging above 80% SOC Oor discharging below 20% SOC) how much battery lifetime I would win vs always 100% fast charging with 125A and running car untill battery is empty?
We haven't collected data in this regard, so we can't respond to you with accurate data. but from my experience, it is difficult to damage your battery in the situation you describe, which means that when you are ready to retire your Leaf car in the future, the battery will still work normally.
Great information Cora.
If it did not overheat in those temperatures it is not going to have problems any where.
CATL did a great job on those batteries.
Thx
Yeah, in order to ensure the accuracy of the test results and eliminate the interference of accidental factors, we will do two more such fast charging test soon, please continue to follow my channel, thank you.
I wonder how those new batteries perform on long trips with 1-2 charging sessions, which was the worst case for original leaf batteries...
Good idea, we will find time to do such a test, please continue to follow my channel😄
@CoraLiu-VIVNE did you noticed a power reduction during rapid charging, when the battery pack reached 40°C?🤔
@@davidsimoneta8513 No, the fast charging power will not be limited at a temperature of 40°C
@@CoraLiu-VIVNE
I've seen such a test with an OEM 62 kWh Leaf:
after a 230 km highway trip, battery temperature raised from 25 to 37°C.
At 40°C and 20% SOC it could charge @40 kW... but when battery reached 47°C and 60% SOC, charging power dropped to 20 kW, affecting trip duration.
If your LFP cells are not designed for charging @ more than 150-200 A, you'll definitly need an efficient battery cooling system in order to charge @ 40-50 KW from 20 to 85% SOC.
E-NV200 OEM pack has liquid cooling... but is very poorly managed: you can do better reverse-engineering its CAN commands...😉
🤞👋
@@davidsimoneta8513 Adding cooling or heating is a complex undertaking and the cost/risk and benefit are not justifiable to Leaf owners.
Next time watch some videos from Bjorn. As far as I could check, the initial charge speed was ~40kW. It would be good to have a charging curve because total charge time is meaningless...nobody charges to 100% on a fast charger.
Thank you for your valuable suggestions. This is our first fast charging test, we ignored the charging curve at that time. Next we will do the same test two more times, and the charging curve will be shown in the video, please kindly continue to follow this channel, thank you.
@@CoraLiu-VIVNE Great! I like your R&D but I need to fill some holes on the information you provide in order to make a judgement for the next ~2 years....the timeline I would need a swap on my 2014 Leaf.
@@fernandinand Thank you for your like and I understand your thought, we will update the video every week, please continue to follow my channel, also you can add my WhatsApp: +8615211174371 or send me Email: cora@vivnevs.com for any question, thank you!
Dear Cora, for people who can afford home charging (eg for a charge current of 20Amps during 10 hrs at night) who wants to achieve optimal 60kWh battery life time (so not charging above 80% SOC Oor discharging below 20% SOC) how much battery lifetime I would win vs always 100% fast charging with 125A and running car untill battery is empty?
We haven't collected data in this regard, so we can't respond to you with accurate data. but from my experience, it is difficult to damage your battery in the situation you describe, which means that when you are ready to retire your Leaf car in the future, the battery will still work normally.