Good to see you back on TH-cam tinkering with the Leaf! Your channel was one of the ones that inspired me to try and salvage an old Leaf. I would love a lighter higher capacity Lithium "12v" battery under the hood.
Thanks for doing this I have concerns about my leaf 2014 12v battery after it died when camping - was too blase about using accessories. Nice to know how much battery is actually needed
Cool! I'm working on the same project. I'll do a vid on mine also. I've designed a 3D printable battery box to put mine in. What are you doing for a box? I'm using some recycled e-bike pouch cells to make 40 Ah pack.
What are you going to use for a 12v BMS? I wanted to put a lithium 12v battery like battle born battery in my 2013 leaf but the BMS has a 32 degree low temp cut off for charging. You can still discharge under 32 though. I live in a colder part of the country so I would have to add a heater and insulation to make sure it will charge in winter.
Not planning on using a BMS, at least not at first. Yes lithium batteries don't like being charged when below freezing. Luckily, I park my car in a garage that never goes below freezing.
Great vid as usual! What I have noticed is that Leaf charges the battery if it goes below 10 Volts. So I would not trust the 24 hour promise. Mine is ‘13, so could differ.
Guess I would install a small Solar Panel to keep my battery maintained over extended parking times. 4S or 4 Series LiFePO4 cell makes a ideal 12v lead acid replacement pack. 3.65v x 4 = 14.6. Only charging your cells to 3.6v extending cell life would give you 14.4v. Don't forget to employ a BMS. Your Automotive charging system produces well above the 14.6v limit on your LiFePO4 cells. No other protections should be required.
Be careful using lithium as a 12V replacement, the DC-DC converter charge rate is very high. If the 12V voltage it low the DC-DC can push 100A into it. This could cause a lithium battery to catch fire. Be sure to calculate the maximum charge rate your lithium pack can safely handle.
Good to see you back on TH-cam tinkering with the Leaf! Your channel was one of the ones that inspired me to try and salvage an old Leaf. I would love a lighter higher capacity Lithium "12v" battery under the hood.
Thanks for doing this I have concerns about my leaf 2014 12v battery after it died when camping - was too blase about using accessories. Nice to know how much battery is actually needed
Cool! I'm working on the same project. I'll do a vid on mine also. I've designed a 3D printable battery box to put mine in. What are you doing for a box? I'm using some recycled e-bike pouch cells to make 40 Ah pack.
What are you going to use for a 12v BMS? I wanted to put a lithium 12v battery like battle born battery in my 2013 leaf but the BMS has a 32 degree low temp cut off for charging. You can still discharge under 32 though. I live in a colder part of the country so I would have to add a heater and insulation to make sure it will charge in winter.
Not planning on using a BMS, at least not at first. Yes lithium batteries don't like being charged when below freezing. Luckily, I park my car in a garage that never goes below freezing.
Great vid as usual! What I have noticed is that Leaf charges the battery if it goes below 10 Volts. So I would not trust the 24 hour promise. Mine is ‘13, so could differ.
Interesting, maybe something I should test...
Guess I would install a small Solar Panel to keep my battery maintained over extended parking times.
4S or 4 Series LiFePO4 cell makes a ideal 12v lead acid replacement pack. 3.65v x 4 = 14.6. Only charging your cells to 3.6v extending cell life would give you 14.4v.
Don't forget to employ a BMS. Your Automotive charging system produces well above the 14.6v limit on your LiFePO4 cells. No other protections should be required.
Be careful using lithium as a 12V replacement, the DC-DC converter charge rate is very high. If the 12V voltage it low the DC-DC can push 100A into it. This could cause a lithium battery to catch fire. Be sure to calculate the maximum charge rate your lithium pack can safely handle.
Shouldn't be a problem, I will be using high power LiFePO4 cells
Cool 4s6p I built and use in my battery powered lawn mower works awesome
When I left my leaf parked for 3 weeks, the 12v battery was completely drained and I had to have it replaced
I would like to include a clip from one of your videos in a video I'm making. Please e-mail me if this is something you're interested in.
looks to me that you still need to find the battery draw of 330 milliamps