How long is a "burst?"

[dr g]

I completely agree that pushing batteries beyond their "continuous" rating entails risks that I personally would not care to take. I've designed plenty of stuff in the past 30 years and good engineering practice dictates that you always leave yourself at least a 50% safety factor. So if a battery is rated 30A "continuous", you don't pull more than 20A from it, and limiting yourself to 15A would be even better.

But even a regulated mod won't prevent battery abuse. I've got a DNA30 bottom feeder that I really like. I regularly run NCR18650PFs in it. Those are technically not "Safe" at for use with a DNA30 (10A continuous rating, DNA30 can pull as much as 12A). Thing is, I don't vape at 30 watts. I vape at 15-16 watts (single coil in a Cyclone). Am I abusing those batteries? No I'm not. But nothing other than my brain prevents me from doing so.

The DNA system protects you even without you realizing it The DNA has thermal protection, so regardless of your battery's spec, if it's overheating near the board, the board will shut down. It also has low voltage cutoff so it will cut out when you are hitting a battery too hard. It actually has some kind of onboard voltage drop sensing which can deem a battery "weak" but it doesn't seem as developed as it could be. Yet.

It's not as good as having a protection circuit on the battery but it goes to show that a well-designed chip adds layers of safety, or even basic safety in the absence of any on the power source.

By this train of thought indoor stoves, microwaves, deep fryers and indoor electricity should all go by the way side by way of the individual industries realizing what dangers they pose and refusing to make a profit off of the potential danger.

I've cleaned up and renovated houses after hundreds of fires. One of the above was the cause of nearly every one. Not a single one was originated by any battery chemistry abused or not. Suggesting otherwise directly or indirectly is blatant fear mongering.

Every single one of those consumer devices is protected against misuse and catastrophic failure at least to industry standards. There are millions and millions in service, but the failure rate is fairly small because of it. You're really starting to reach here, unfortunately...

Keeping the aforementioned indoor electricity safe for residential dwellers involves 910 pages of safety standards and most municipalities employ inspectors to make sure things meet code.

 

[beckdg]

You're really starting to reach here, unfortunately...

Keeping the aforementioned indoor electricity safe for residential dwellers

Is completely and utterly impossible.

The fires I've boarded up and renovated and the shortcuts I've seen taken even by workers I've subcontracted (and fired) are undeniable proof.

For example I just alerted the hotel I'm staying at last night of 6 health and safety violations pertaining to just their guest washer and dryer. It was obvious that they were overlooked for over a month. Considering the liability implications and freedom from financial restrictions places like this are usually much more attentive and likely to address these things than a homeowner just scraping by.

Every single one of those consumer devices is protected against misuse and catastrophic failure at least to industry standards.

Obviously that can't stop, prevent or cure stupid.

 

[DaPopeLP]

Indeed; thanks for posting them.

Yet apparently there was an "explosion" at Vape Blast. So worse things than that CAN happen, which makes me wonder under what circumstances they do?

Which leaves 2 real options.

A) he was not using a high drain battery which is what those videos showed.
B) There is info we are missing in a big way.

Also interesting is it took nearly a minute to vent a battery on a .09 ohm build. Thats nearly 47 amps

 

[dr g]

Is completely and utterly impossible.

The fires I've boarded up and renovated and the shortcuts I've seen taken even by workers I've subcontracted (and fired) are undeniable proof.

For example I just alerted the hotel I'm staying at last night of 6 health and safety violations pertaining to just their guest washer and dryer. It was obvious that they were overlooked for over a month. Considering the liability implications and freedom from financial restrictions places like this are usually much more attentive and likely to address these things than a homeowner just scraping by.

Obviously that can't stop, prevent or cure stupid.

But stupid means no company in their right mind would make a product like those without meeting consumer level safety standards.

You're making the case for me. Relying on people to be the safety factor is really not safety at all.

 

[beckdg]

But stupid means no company in their right mind would make a product like those without meeting consumer level safety standards.

You're making the case for me. Relying on people to be the safety factor is really not safety at all.

You just don't get it. Make things as safe as you can. If there's even a remote chance to make it dangerous the same people who are unwilling to take the precautions are going to create the danger any how.

 

[dr g]

You just don't get it. Make things as safe as you can. If there's even a remote chance to make it dangerous the same people who are unwilling to take the precautions are going to create the danger any how.

That's simply not true. Devices with proper battery protections would have to be actively modified to defeat those protections to become as unsafe as a device without protections. There's a difference between not taking precautions and actively removing protection. People who are simply ignorant may not take precautions but probably won't be actively defeating the safety features either.

Matter of fact, it's probably the kind of person who WOULD take precautions that would remove safety features.