7 ms·

> This Bag Has Contained 10,000 mAh Thermal Runaway Events. Is it just me, or is their choice to use mAh—a meaningless unit in this context—a major red flag? F

> This Bag Has Contained 10,000 mAh Thermal Runaway Events. Is it just me, or is their choice to use mAh—a meaningless unit in this context—a major red flag? Five figures for a bag, and they can’t even get their units right? Is there some “standard voltage” of which I’m not aware? > Our bags were tested on 4 separate occasions with an overheated laptop, each containing a 3,500mAh - 4500mAh Lithium-Ion battery. The computers melted and burned during these 1 hour tests. The bags showed zero exterior damage. The pull over flaps combined with our carbon liner also absorbed a significant amount of smoke. That’s meaningless unless we know the voltage. Amp-hours don’t measure energy. > Tests were conducted with an overheated laptop and cell phone battery (combined capacity of 8,000 mAh- twice as much power as a typical laptop). Our bag passed this test with 100% containment. Amp-hours don’t measure power—that’d be watts. Neither are measures of energy. This is misleading at best. Maybe I’m being pedantic, but if I’m paying five figures for a bag and trusting my life with this company, I think it’s fair to expect technical correctness in the product description. This reads like a scam—maybe it isn’t, but the wording is far from reassuring.

aidenn0 4y ago
> Is it just me, or is their choice to use mAh—a meaningless unit in this context—a major red flag? Five figures for a bag, and they can’t even get their units right? Is there some “standard voltage” of which I’m not aware? Most lithium-based rechargeable cells are nominally between 3.2 and 3.8 volts and are rated in mAh[1]. I would much prefer that they were rated in watt-hours, but they are not. 1: I've seen LMOs with nominal voltages as high as 3.8; LiFePO4 are Nominally 3.2; I think there are some exotic electrode chemistries that are nominally under 3V, but 3.2-3.8 is a fairly solid range for the nominal voltage; voltages at full charge and "empty" will be higher and lower respectively.

aidenn0 4y ago

> Is it just me, or is their choice to use mAh—a meaningless unit in this context—a major red flag? Five figures for a bag, and they can’t even get their units right? Is there some “standard voltage” of which I’m not aware? Most lithium-based rechargeable cells are nominally between 3.2 and 3.8 volts and are rated in mAh[1]. I would much prefer that they were rated in watt-hours, but they are not. 1: I've seen LMOs with nominal voltages as high as 3.8; LiFePO4 are Nominally 3.2; I think there are some exotic electrode chemistries that are nominally under 3V, but 3.2-3.8 is a fairly solid range for the nominal voltage; voltages at full charge and "empty" will be higher and lower respectively.