Nissan LEAF - General

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545 posts

Ultimate Geek

#3273858 20-Aug-2024 13:00

nic.wise:

Not sure if the cig ligher would be enough for this. But should be easy enough to connect to the battery?

The car does need to be on to charge the internal 12v tho.

100w from cig lighter is sufficient, it's for emergency power only. If the power station is empty I'll just disconnect the loads so I can charge it up again.

I was mainly concerned if a continuous 100w load via the cig lighter would get too warm?

It's fine to leave the car on.

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Scott3

3917 posts

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#3273860 20-Aug-2024 13:10

boland:

For emergency power during a power cut I'm thinking to buy a portable power station which can be charged via AC, solar, or car (via cigarette lighter). Based on my research, the cigarette lighter in the Leaf is only working when the car is on, which is fine, as then it will also keep the 12v battery topped up from the high voltage battery.

The power station supports pass-through charging. So, the plan is to connect critical AC loads (2 fridges) to the power station, and keep it charged via the Leaf. As long as I stay below ~100w on average, I believe this should keep the power station at 100%. Obviously until the Leaf battery runs out.

Just wondering if there's any issue with this approach?

Check that the power station:

Is pure sine
Has enough grunt to start a fridge compressor
Is capable of being simultaneously charged and discharged.

I have a big pure sine inverter rigged up with clips to go onto the battery, as my emergency power plan.

nic.wise

333 posts

Ultimate Geek

Trusted

#3273875 20-Aug-2024 14:12

I guess you have one of the newer leaf's? I dont think my 2014 can do 100W out of the cig :)

Nic Wise - fastchicken.co.nz

Jase2985

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#3273975 20-Aug-2024 20:10

nic.wise:

I guess you have one of the newer leaf's? I dont think my 2014 can do 100W out of the cig :)

12v x 10 a = 120w generally thats what they are rated at unless they say otherwise

be aware that the running watts of a fridge might be less than 100w but the starting watts might exceed that and trip the system.

smac

333 posts

Ultimate Geek

#3273991 20-Aug-2024 20:58

My physics education is a dim and distant past, but I do know that anything I've ever tried to charge from a car socket is a HELL of a lot slower than a wall charger. eg. 20W wall charger way faster than a car socket, so I very much doubt they are letting you pull 10A from it. I guess could vary from car to car but my experience is across several different makes and ages.

Jase2985

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#3274567 22-Aug-2024 19:49

smac:

My physics education is a dim and distant past, but I do know that anything I've ever tried to charge from a car socket is a HELL of a lot slower than a wall charger. eg. 20W wall charger way faster than a car socket, so I very much doubt they are letting you pull 10A from it. I guess could vary from car to car but my experience is across several different makes and ages.

if it was a 20W car charger it should be the same speed, but i suspect it wasn't.

As mentioned, most cigarette sockets I have seen have been 10A protected by 10A fuse and should be able to deliver 10A. If they don't deliver 10A then i suggest your device isn't capable of accepting 10A, as it's the device that demands the power up to the limit of the protecting device, in the case the 10A fuse.

boland

545 posts

Ultimate Geek

#3274614 22-Aug-2024 22:19

I've tested with our other ev which is rated for 180w. The power station (Bluetti AC180P) charges at 100w as expected.

Until prices of EVs with V2L come down this is our emergency power supply.

boland

545 posts

Ultimate Geek

#3274616 22-Aug-2024 22:22

Jase2985:
be aware that the running watts of a fridge might be less than 100w but the starting watts might exceed that and trip the system.

I'm not running it directly of the cigarette lighter. The power station is rated for up to 1.8kW so more than enough.

If the power station gets depleted I'll just turn off the fridges for some time. It's an emergency backup.

smac

333 posts

Ultimate Geek

#3294406 8-Oct-2024 12:27

My 2013 AZE0 is nearing it's useful (to me) life. That is, next winter might not handle my commute on 1 charge.

I know EV Enhanced (Chch) can do a swap for a better 24kWh battery for around $5k.....which buys another few/couple years I guess.

Has anyone ever compared this with the price of replacing individual troublesome cells? I realise the battery still needs to be dropped out.

Does anyone do these things in the North Island? I've tried to make sense of the Blue Cars website but seriously, it's rubbish.

Car has ~60K k's on it, so usual story, I'm weighing up whether it's worth spending anything on it because it's an otherwise good car, versus getting something else.

Cheers

Canuckabroad

176 posts

Master Geek

#3294608 8-Oct-2024 14:13

I understand trying to keep an existing vehicle running for longer, but given how much the prices of used EVs have dropped across the board - I see there is a 2016 model for sale at dealer in Auckland for under $5k and you might pay less with a private sale. Unless you can do the work yourself, it's going to be difficult to do any work to an old Leaf that is worth it from a purely economic standpoint.

Jase2985

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#3294610 8-Oct-2024 14:14

Drive EV in Taupo might also be an option?

Have you looked at a bigger pack?

Cybnate

70 posts

Master Geek

#3294664 8-Oct-2024 14:29

I got a quote for a battery swap for my 2016 Leaf on 9 bars from an Auckland outlet.
I was offered a 40kW 2nd hand battery swap with SoH of 85% for $10k. Could take or leave the old battery, but not getting anything back for it from them.

Suppose you should be able to get a similar 30kW for a couple of grant less which could still do your commute with some margin.
As per above, is it worth it versus getting a newer 2nd hand?

Scott3

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#3294710 8-Oct-2024 15:48

smac:

My 2013 AZE0 is nearing it's useful (to me) life. That is, next winter might not handle my commute on 1 charge.

I know EV Enhanced (Chch) can do a swap for a better 24kWh battery for around $5k.....which buys another few/couple years I guess.

Has anyone ever compared this with the price of replacing individual troublesome cells? I realise the battery still needs to be dropped out.

Does anyone do these things in the North Island? I've tried to make sense of the Blue Cars website but seriously, it's rubbish.

Car has ~60K k's on it, so usual story, I'm weighing up whether it's worth spending anything on it because it's an otherwise good car, versus getting something else.

Cheers

If the problem is just a week cell or two (you should be able to see this on leafspy at a low state of charge), then swapping them can be a good option, but there is a decent chance it is the whole pack that is degraded.

On whole pack swaps, hard to make the numbers stack up, vs upgrading the entire car, especially if the existing pack is still functional, As a general rule the best value option is to sell the car to somebody with a shorter range need than you and then buy a car with a longer range.

Lets say you sell your current leaf for $2500 (cheapest on trademe is $3500), and buy a 10 bar 2014 leaf for $5500, you are $2k better off than having done the battery swap...

And it is only $5500 more than the cost of a battery swap to upgrade to a 2017 40kWh leaf, a car with a heap more range, more power, more boot space, a reputation for slow batery degradation and that is going to have a lot stronger resale value than a 2013 leaf with a swapped battery.

Cybnate:

I got a quote for a battery swap for my 2016 Leaf on 9 bars from an Auckland outlet.
I was offered a 40kW 2nd hand battery swap with SoH of 85% for $10k. Could take or leave the old battery, but not getting anything back for it from them.

Suppose you should be able to get a similar 30kW for a couple of grant less which could still do your commute with some margin.
As per above, is it worth it versus getting a newer 2nd hand?

On this case, the cheapest 40kWh car on trademe (85% health) is $13k

https://www.trademe.co.nz/a/motors/cars/nissan/leaf/listing/4906204941

Could likely sell a 2016 9 bar leaf for at least $5k.

So would be saving $2k to sell the car and buy a 40kWh one, vs the battery upgrade. Plus you get the perks of the ZE1 body style (more powerful motor, larger boot etc). And you don't need to explain your insurance company and potential buyers when it comes time to sell that your car has had a big battery upgrade, making it a lot more valuable than the body style suggests.

smac

333 posts

Ultimate Geek

#3294717 8-Oct-2024 16:01

Thanks for your thoughts people. I guess the values really have come down a lot since I last looked!

It really does look like a car swap is making more sense than a battery swap. If anyone wants a tidy 2013 Leaf with a 60km range, lets talk!

heavenlywild

5040 posts

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#3294719 8-Oct-2024 16:04

Isn't a brand new Leaf now 30k? Considering the warranty benefits etc you may want to consider that as an option.

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