[deleted]
2025-12-18 07:44
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jtchoy
2025-12-18 08:10
Home charger isn't exactly 'fast', a 7kW will take approx 10 hrs for a full charge.
DC chargers will take less than an hour, but you can't install it at home.
Necessary-Ad-3259
2025-12-18 08:58
Thanks - shows how clueless I was about this. Single phase for me!!
Necessary-Ad-3259
2025-12-18 08:59
Ok thanks. 10 hrs is slow but better than the 24hrs or so the one the car came with takes. Atleast I can charge overnight. Do you have any you recommend?
[deleted]
2025-12-18 09:22
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[deleted]
2025-12-18 09:23
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zodmczod
2025-12-18 09:56
No affiliation, but I was looking at this for at least a minor upgrade from the granny charger. Conditions were I could still use the regular 10A outlet (ie no additional electrical work required - obviously limits choice, and precludes a proper 'fast' charging option).
Seems can get 2.4kw as opposed to the 1.4 I see from the supplied Granny. So, not a massive difference but good enough when I'm using solar during the day, or to chuck in the car when travelling:
https://amzn.asia/d/hGMGX1a
Steved101
2025-12-18 10:50
That is a 10 amp charger on a normal household plug, 25% better than the 8 amp charger BYD supply. If you have a 15 amp power outlet (commonly known as caravan or welder socket) then sweet. Installation of a 15a socket can be $150 - $200. At that point, might as well buy and install the 32 amp 7kW charger for around $1000 or so all up.
Steved101
2025-12-18 10:52
Is that direct from the battery? If so, cool option.
zodmczod
2025-12-18 10:59
Thank you. Yeah, as I say, just a modest step up without any electrical work for now, but at some point an upgrade probably in order! :-)
Steved101
2025-12-18 11:06
All good; I have been on a similar journey as we have 3 hours of free electricity per day. I've been trying to squeeze more amps through but really, I should bite the bullet and have the 7kW home charger installed.
Garage_Agitated
2025-12-18 20:56
What is solar+ sigen battery .
Purple-Intern9790
2025-12-18 21:30
That’s what I did, absolutely love my 25kw charge capability, and because it’s DC-DC, the losses are minimal
Purple-Intern9790
2025-12-18 21:31
As others have said, DC charging is definitely capable at home, and with battery technology improving it’ll become more and more common
[deleted]
2025-12-18 23:08
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[deleted]
2025-12-18 23:19
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Garage_Agitated
2025-12-18 23:37
Sorry for troubling you with the explanation, thanks fam.
[deleted]
2025-12-19 12:56
25kw of discharge rate must absolutely fuck your battery tho, unless you have a massive stack
edit: just checked the specsheet, up to 80 amps for 25kw charging rate, RIP battery cells...
Purple-Intern9790
2025-12-19 22:35
You’re thinking of it as if the charge only comes from the battery, majority of that 25kw is 10kw from solar, and i usually set the charge speed at 10
Purple-Intern9790
2025-12-19 22:36
https://preview.redd.it/nvv50wh2n88g1.jpeg?width=1206&format=pjpg&auto=webp&s=bf111da456134ec7074f75e4fc8328888aaad5ad
Yesterday was my new record for power creation in one day, with only 13.5kw of panels
[deleted]
2025-12-19 22:55
yeah in that case, with full speed solar production, it would drop the battery discharging current to \~50 Amps, still quite high but nowhere as terrible
in any case, great to have when you need to charge the car fast, for day to day I'd charge at half that speed for both home and car battery's sake, but that's just me :)