Anyone Using Electric car as storage battery

[Mike90250]

The hand crank was better than the starter cord (except on the chainsaw) Crank is on the lower part of the pic
20170215_075755c.jpg

[Sunking]

So a Prius has a battery of similar voltage to a UPS, and its gas engine can keep things going indefinitely. But since
I have no desperate need for uninterrupted power, I'd rather skip the UPS and all its batteries. And for so many of
us, a generator is far cheaper than a Prius. I learned a very long time ago, that a starter motor is a far better approach
than a cord to pull. Bruce Roe.

Yeah pull cords are a bwitch in an ice storm or blizzard. Especially if it is old, cold, brittle and breaks after the first pull. Well make you cuss like a drunk sailor in a Ho House.

[bcroe]

see *** about how to correctly use a Prius as a UPS

So a Prius has a battery of similar voltage to a UPS, and its gas engine can keep things going indefinitely. But since
I have no desperate need for uninterrupted power, I'd rather skip the UPS and all its batteries. And for so many of
us, a generator is far cheaper than a Prius. I learned a very long time ago, that a starter motor is a far better approach
than a cord to pull. Bruce Roe

[cebury]

I guess you're right. My initial question was how long is the "long" boiling duration for my 12V/225A battery, by example, to suffer serious damages?

Also, what kind of damage do they encounter? You did mention about sulfation, too, but I've read that this is a specific "disease" of chronically undercharging abuse only.

Nevermind, I'm going to recycle both of them. Sorry for hi-jacking this thread.

@cebury:

Now I'm aware that EVs have a separate battery for housekeeping. It just looks awkward to have an untouchable multi-kW power supply in your car.

I agree. It's just like when folks hear "I have no/none? electricity when the main grid is down, yet have all these panels sitting in the sun that turned themselves off?" It creates an itch that most common folks really want to scratch. The SPS feature on SMA inverter provides some itch relief, but then really how often will it be used? Probably close to never in some regions, sometimes in other regions where weather knocks out grid but the panels are still good.

[Mike90250]

......Now I'm aware that EVs have a separate battery for housekeeping. It just looks awkward to have an untouchable multi-kW power supply in your car.

see http://www.priups.com/ about how to correctly use a Prius as a UPS

[santaclaws]

The boiling battery is ruined. Either sulfated or oxidized, Likely warped plates and cracked separators too. No repairing or recovery for long term, recycle it, or RMA it.
And all the other cells in the same string, are well on their way to toast land too, if they also warmed up at all. I'm not a chemist, but I know abuse damages a battery.

I guess you're right. My initial question was how long is the "long" boiling duration for my 12V/225A battery, by example, to suffer serious damages?

Also, what kind of damage do they encounter? You did mention about sulfation, too, but I've read that this is a specific "disease" of chronically undercharging abuse only.

Nevermind, I'm going to recycle both of them. Sorry for hi-jacking this thread.

@cebury:

Now I'm aware that EVs have a separate battery for housekeeping. It just looks awkward to have an untouchable multi-kW power supply in your car.

[cebury]

Back to the last point of discussion, I'm not sure Santa is even aware that today's EVs have two batteries. He was suggesting to draw from the "big" battery via the 12v vpp system for nighttime use age. SunEagle tried to clarify but I don't think it took.

[Mike90250]

The boiling battery is ruined. Either sulfated or oxidized, Likely warped plates and cracked separators too. No repairing or recovery for long term, recycle it, or RMA it.
And all the other cells in the same string, are well on their way to toast land too, if they also warmed up at all. I'm not a chemist, but I know abuse damages a battery.

[santaclaws]

Like I told you on the other thread, it only needs to have the transformer windings wired in series to become a 48V inverter (so nothing expensive).

That would be the next step, once I'll "repair" my battery bank.

[Sunking]

(1) Forget my boiling battery, I quit longing for an answer. You keep yielding about parallel/series connections only.

(2) I wrote you on the other thread: I'm using six power Mosfets in parallel (170Amps rated each) for every h-bridge switch of the inverter.

Do you think they can handle a 200A average current??

I rest my case. If you knew how dangerous and expensive that is, you would know better and could cut that down to 50 amps or even 25 amps. Which is much safer and less expensive, a whole lot less expensive.

[santaclaws]

(1) Forget my boiling battery, I quit longing for an answer. You keep yielding about parallel/series connections only.

(2) I wrote you on the other thread: I'm using six power Mosfets in parallel (170Amps rated each) for every h-bridge switch of the inverter.

Do you think they can handle a 200A average current??

[Sunking]

I promise to not mention your name anymore and I'll be honored if you could skip my threads on this forum. I did my best to be friendly but it takes two to tango..

Not going to happen.

Makes no difference if it is 12 or 24 volts. 5000 watts is 48 volt battery and higher. It has been explained several times why your battery boiled. If you knew anything about batteries you would not have to ask. You got the Target on your back is all on you because you are dangerous.

[santaclaws]

1. You claim to be off grid for 2 years running 12 volts and a 5000 watt Inverter. I believe you do exactly that

I never claimed such a thing. If you remember, my battery bank is 24V but the inverter is rated at 5000W, that's right. I'm using six Mosfets in parallel (each rated at 170 Amps) for every h-bridge switch. Do you think they could handle the 200Amps average current?

You use parallel batteries and cannot figure out why you boiled a battery. I believe that too

If you try to actually read my first post on that topic, I did mentioned that one cell was shorted. My question was: what's actually happening when a battery is heavily boiled (from chemistry/mechanical/electrical point of view) but no one answered to my question though.

Proves you do not know what you are doing plain and simple.

Proves nothing (see above).

You put a target on your back, and the MODS are watching you like a Hawk watches a Rat in the grass. They are waiting to take you out.

Actually, YOU put a target on my back. I promise to not mention your name anymore and I'll be honored if you could skip my threads on this forum. I did my best to be friendly but it takes two to tango..

[Sunking]

Could you be more specific, please?

Real simple.

1. You claim to be off grid for 2 years running 12 volts and a 5000 watt Inverter. I believe you do exactly that.
2. You use parallel batteries and cannot figure out why you boiled a battery. I believe that too.

Proves you do not know what you are doing plain and simple. You do not even know why or how dangerous that is. You put a target on your back, and the MODS are watching you like a Hawk watches a Rat in the grass. They are waiting to take you out.

[Sunking]

Then there was a discussion about cigarette socket power ratings and, FOR EXEMPLIFICATION PURPOSE ONLY, I've stated that you could even use a 5kW inverter AS LONG as the LOAD is around 2-300W.

The whole discussion was about not voiding the guarantee thus no fancy wiring or fusing.

In this respect, it's obvious (and I guess anyone knows) that every cigarette socket is FUSED (10-30Amps, as others have confirmed) so no damage could be done..

This is where you are dead wrong. The vehicle wiring can be easily damaged, like melting the insulation off the wiring. ATC fuses are Slow Blow and that death trap of a 12 volt 5000 watt Inverter can easily over load the wiring causing damage before the fuse operates. You can dance all you want, but this proves you really do not understand what is going on.

Try this and see how it works. Go buy a new Corvette, then go to your Insurance company and tell them they cannot charge you high price for coverage because you will never go faster than 30 mph. I bet they laugh at you all the way out the door and then some.