question about DIY Solar Garden Light Battery Charge 4 Solar Cell

[SunEagle]

I haven't seen one of those yet; maybe they're out there somewhere. I don't think I'd use one - swap the most expensive part of the car for another one that might be damaged? Seems like a bad gamble. But maybe with enough pack performance monitoring it could work.

From what I have heard you wouldn't be swapping your battery for another. You would be "renting" the stations battery while yours was fully charged. When you got back you would swap out the "rental" for yours. Of course there would be a rental fee but the premise would be time was more important then money so instead of waiting for your battery to get charged you would pay for the use of another battery and be able to get back to your trip quickly.

[jflorey2]

Some of those stations also have the ability to quickly swap out the battery so you don't have to wait long to get back on the road again. It is a big expense to set up these stations but it probably increased the sales of the Tesla for those people with travel distance anxiety with an EV..

I haven't seen one of those yet; maybe they're out there somewhere. I don't think I'd use one - swap the most expensive part of the car for another one that might be damaged? Seems like a bad gamble. But maybe with enough pack performance monitoring it could work.

[jflorey2]

Link please, second request.

Don't have a link for the service capacity, that was from a conversation. For an overview of power levels Wiki is a reasonable resource: https://en.wikipedia.org/wiki/Tesla_station

Funny you should say that because the LA Times and a boat load of credible sources say Edmond Musk three companies, Tesla, Space-X and Solar City have never made a dime of profit and heavily subsidized by us tax payers to the tune of some $5 billion and counting to keep him wealthy and a float. That was back in early 2015.

Yep - Musk's financing has been creative at best. If he pulls it off he'll be remembered as an Edison or a Ford; if he fails, he'll be remembered like Preston Tucker was. (Never heard of him? He got his start with gobs of taxpayer money, and made a pretty good car too - but couldn't pull off the financial side of the business, and his company folded after building only 50 of the things.)

[J.P.M.]

Some of those stations also have the ability to quickly swap out the battery so you don't have to wait long to get back on the road again. It is a big expense to set up these stations but it probably increased the sales of the Tesla for those people with travel distance anxiety with an EV..

I often thought battery swapping was a better fit for people's expectations about how long a "fillup" ought to take. Kind of like 25 lbm propane cylinders. You don't really own the container, just buying the energy contents. Battery changeout could look similar in time and orientation to running through the carwash without the detailing. 3 - 5 minutes ?

[Sunking]

Some of those stations also have the ability to quickly swap out the battery so you don't have to wait long to get back on the road again. It is a big expense to set up these stations but it probably increased the sales of the Tesla for those people with travel distance anxiety with an EV..

Yeah if you live in CA and can afford a $100K golf cart.

[SunEagle]

Yes. 4876 chargers at last count, in 769 charging sites throughout the US.

Nope, coming all out of Musk's pocket. Most such charging stations have 6 to 16 charging slots. From the installer I talked to, 600 amps is on the low side for most such installations; when such stations are full, some fancy throttling takes place to prevent overloading the source.

Some of those stations also have the ability to quickly swap out the battery so you don't have to wait long to get back on the road again. It is a big expense to set up these stations but it probably increased the sales of the Tesla for those people with travel distance anxiety with an EV..

[PNjunction]

PNjunction what is wrong with Ultrafire batteries? They make a LED last a long time better than AA-AAA?
The Ultra Fire Battery I have is 18650 3.7v and 9800mAh

This is for the lurkers. The main emphasis here is that the average diy'er can be totally fooled unless they extensive knowledge and experience in this field for both safety, performance, and pricing. Sorry, that's just the way it is.

By far the best examination of why a 9800mah Ultrafire doesn't exist and is at best a total counterfeit can be found here:

http://www.candlepowerforums.com/vb/...3980cbef6f80f9

It is the wild-west out there for hobbiest cells. You *have* to know what you are doing and are dealing with if you value your own safety, as well as others. I wish it wasn't so, but it is the truth of the matter.

[Sunking]

Yes. 4876 chargers at last count, in 769 charging sites throughout the US.

Link please, second request.

Nope, coming all out of Musk's pocket.

Funny you should say that because the LA Times and a boat load of credible sources say Edmond Musk three companies, Tesla, Space-X and Solar City have never made a dime of profit and heavily subsidized by us tax payers to the tune of some $5 billion and counting to keep him wealthy and a float. That was back in early 2015. In fact if you look at SEC financial statements to date made by Tesla and Solar City have never made a dime of profit. Since Space-X is a government contractor can keep everything secret and only has one customer the tax payers. Sure sounds like we are paying for it. Musk has been milking the public since he arrived here. Care to guess who is paying for his Mega Battery factory in NV? Not Musk or his companies. Have a great day.

[jflorey2]

Are you talking about the fast charge stations that Tesla built?

Yes. 4876 chargers at last count, in 769 charging sites throughout the US.

Link please kind Sir. FWIW to laymen's a 480 volt 600 amp 3-phase service is capable of 864 Kw or voltage x current x 3. So I am not sure why you would need a 480 - 600 amp service unless you have 7 charging stations or the ability to grow that large. I certainly hope no public funds is ever used for that.

Nope, coming all out of Musk's pocket. Most such charging stations have 6 to 16 charging slots. From the installer I talked to, 600 amps is on the low side for most such installations; when such stations are full, some fancy throttling takes place to prevent overloading the source.

[SunEagle]

Strange you should say that. I do it all the time. (Actually 60kwh in 30 minutes.)

Are you talking about the fast charge stations that Tesla built?

[Sunking]

Nope, not experimental at all. As of last count there were 4800 DC chargers capable of 120kw charging in the US. Just drive up and plug in. (Such charging stations START at 480 volt 600 amp service.).

Link please kind Sir. FWIW to laymen's a 480 volt 600 amp 3-phase service is capable of 864 Kw or voltage x current x 3. So I am not sure why you would need a 480 - 600 amp service unless you have 7 charging stations or the ability to grow that large. I certainly hope no public funds is ever used for that. That is enough power for over 80 houses. Just a single 120 Kw charger is is enough for 10 to 15 houses dependin gon whose numbers you want to use.

I know about CHAdeMO standard using 500 vdc @ 125 amps (62.5 Kw) supplied from 3-phase 480 volt service. Have not heard of a single charger in the USA capable of 120 Kw or know of any such standard. But then again I left 2 years ago.

So a link would be appreciated, You have a wonderful day and may the Sun never set upon you kind Sir.

[jflorey2]

Must be experimental 3-phase charger connected to a 480 volt 100 amp service there Bill Gates.

Nope, not experimental at all. As of last count there were 4800 DC chargers capable of 120kw charging in the US. Just drive up and plug in. (Such charging stations START at 480 volt 600 amp service.)

Bet the house lights dim huh?

The house EVSE is good to 10kW, which is more than sufficient for overnight charging. The fast chargers are intended for the case you mention - have to get to Aunt Betty's and you don't want to waste a few hours in a truck stop sampling the local cuisine.

[Sunking]

Strange you should say that. I do it all the time. (Actually 60kwh in 30 minutes.)

Must be experimental 3-phase charger connected to a 480 volt 100 amp service there Bill Gates. Congrats. Bet the house lights dim huh?

[jflorey2]

Pumping 40 Kwh in 30 minutes or less in a EV can and has been done, but extremely dangerous and cannot be done safely by Joe Public car driver. It will take a trained operator and removing all occupants far away if a problem should happen, and it will happen. Just one loose connection or mistake and you have BOOM and great balls of fire.

Strange you should say that. I do it all the time. (Actually 60kwh in 30 minutes.)

[Mike90250]

I've saved GC the trouble of unsubscribing and suggested a different solar-electric forum