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 charge EV via - solar day...night EV as genset?

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skywardsword
post Apr 25 2024, 10:53 AM

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QUOTE(mac_mac21 @ Apr 25 2024, 09:53 AM)
Since your home already have solar panel installed , why not just upgrade the system to store any excess energy generated for the day?

Calculate the maximum energy your solar panel able to generate and buy enough battery according to maximum generated energy

This is more safe , easy and cost effective  to maintain then buying EV car as an energy storage
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My house not yet. My boss house/which I work from, just start to explore solar as the bill jump from rm700 to rm1000 from January 2024.


Battery works, but honestly would not advise the Bosses to get battery system as we have the NEM. Which is the cheapest way to get Solar and enjoy best of both worlds.

Once the NEM ends, if it ever ends, than consider to self supply Battery system.


Solar helps and also is a drag on the Grid on some instances. But it makes sense most of the time.

When weather is hot, people on Aircon, and the solar panels is just right at the peak performance.


However when there is a cascading problem due to supply issues, it can easily become a mode ferk situation that cannot recover unless do load shedding at grid level.








This post has been edited by skywardsword: Apr 25 2024, 10:57 AM
yeapsc73
post Apr 25 2024, 11:04 AM

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QUOTE(Avangelice @ Apr 25 2024, 09:22 AM)
Evs are meant to save you money but you end up spending more than petrol that you pump over the years.

I don't get you ev drivers
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Cost and efficiency for day trip from Subang Jaya to Gua Musang.
Total Distance: 580km (290km each way)
Battery SOC: 100% to 40% from Subang Jaya to Gua Musang, @ 125wh/km
Charge at DC Handal Gua Musang 47kW DC: 40% to 90%, 45min, negligible as it is lunch time
Battery SOC: 90% to 35% from Gua Musang to Subang Jaya @ 113wh/km
Travel time each way: approx 4 hours
Car: Tesla Model 3 RWD @ 60kwh battery
Charging Cost: DC charging 33kWh @ RM1.3 = RM42.90, actual figure recorded from the charger display
Charging Cost: AC charging 43kWh @ RM0.7 (assuming worst rate for residential tariff with RM0.10 TNB surcharge plus SST etc) = RM30.10, already considered charging efficiency of 90%
Total Charging Cost = RM73 or 35.6l petrol equivalent
Equivalent petrol consumption efficiency: 580/35.6 = 16.3km/l
My house is with solar roof so my AC charging cost is much lower as my solar electricity cost is approx RM0.3/kwh, so my actual total charging cost would be lower at about RM55.80 or 27.2l petrol equivalent @ 21.3km/l equivalent petrol efficiency
TSadam71
post Apr 25 2024, 02:48 PM

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QUOTE(WinkyJr @ Apr 25 2024, 10:26 AM)
what happen after 10 years, are u going to keep it or dispose it? wonder how many people will buy a car with near expired battery warranty and will cost them a national car to replace.
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byd battery replacement now 20K.....future maybe 10K++
SUSlurkingaround
post Apr 25 2024, 04:34 PM

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QUOTE((phunkydude @ Apr 17 2024, 04:30 PM)
Ada wang memang boleh repair ...   brows.gif

user posted image
user posted image

moneyflies.gif  moneyflies.gif  moneyflies.gif
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QUOTE((lurkingaround @ Apr 17 2024, 09:38 PM)
.
https://forum.lowyat.net/index.php?showtopi...ost&p=109563767 - Tesla got hit on the door will TOTAL LOSS

= BYD SC in Thailand recently charged 896,000 baht or US26k or RM125k to replace-new the 50kWh LFP Blade battery of the above damaged BYD Atto 3 Standard Range  but got EV-lovers here are expecting the price of EV cars to drop substantially in the near future. 
....... A new BYD Atto 3 SR in Thailand cost 1,099,900 baht (= RM143k) or US$30k before March 2024.

So, the BYD Atto 3 Extended Range 60kWh LFP Blade battery will cost about US$30k or RM144k to replace-new, compared to it's sale price of 1,199,900 baht (= RM156k) or US$33k before March 2024

This US$26k price for a new BYD LFP Blade 50kWh battery replacement is while the price of Lithium Carbonate is presently at near bottom, ie CNY109,000 per metric ton. It's price had peaked in Nov 2022 at CNY600,000 per metric ton. .......

https://www.mining.com/web/china-lithium-pr...-2024-analysts/ - 1 Dec 2023 - China lithium price poised for further decline in 2024 – analysts
user posted image

Even if BYD had hiked up the price of it's spare parts like the new EV batteries, the 50kWh LFP Blade battery would still need to cost around US$20k or RM96k at the BYD factory.

So, I do not see the price of Chinese EV cars dropping substantially in the near future, so as to be able to compete with the price of ICE-V cars, unless the Chinese EV car-makers will sell at a loss in the long run, eg the Proton X70 price starts at RM99k whereas the similar BYD Atto 3 price starts at RM150k in Malaysia.
.
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https://forum.lowyat.net/index.php?showtopi...ost&p=109565423 - china owns entire EV battery supply chain, mining, refining, every phase


QUOTE(adam71 @ Apr 25 2024, 02:48 PM)
byd battery replacement now 20K.....future maybe 10K++
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.
Is your BYD battery replacement of RM20k sourced from CCP China.? Is the RM20k figure for new or remanufactured/recond battery replacement.? If for new battery replacement for BYD Atto 3, the cost in Thailand and Malaysia is much more expensive, eg shipping fees.
.

This post has been edited by lurkingaround: Apr 25 2024, 04:39 PM
yushin
post Apr 25 2024, 04:42 PM

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QUOTE(adam71 @ Apr 25 2024, 09:28 AM)
BYD battery only cost RM24K replacement......is that expensive?...maybe 2027 drop to RM15K
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Thats cheap.
My 20kwh lithium battery for solar costs almost rm11k at 2019.
BYD battery how many kwh?

This post has been edited by yushin: Apr 25 2024, 04:42 PM
brkli
post Apr 25 2024, 05:34 PM

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well if u have too much money to burn, sure you can do it.

it would be cheaper, more efficient, and safer if just buy large LiFePO4 battery and hook it up over the solar and/or a charge controller for direct DC charging..

This post has been edited by brkli: Apr 25 2024, 05:34 PM
judas
post Apr 25 2024, 05:39 PM

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Apa susah susah

Solar, sell it back to the grid, u wanna charge day or nite u suka

I dont get the point where u treat the EV like a battery for what?
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