MadLintElf t1_iuf0oiw wrote on October 30, 2022 at 8:48 PM

Reply to comment by Smith6612 in Fires from exploding e-bike batteries multiply in NYC — sometimes fatally by zsreport

At my hospital we use lion batteries for mobile cart computers. In the last 10 years we only had one go bad on us. These batteries run a computer/monitor for 8 hours at a time and cost around 1K USD.

When that battery went the housing split and out of a pinhole smoke shot out, thankfully no flames. We put it in a metal bin, put the bin in a cinderblock walled stairwell and let the fire department handle it. But thankfully no cascade failure.

askjacob t1_iugcz9p wrote on October 31, 2022 at 2:45 AM

Are they Lithium Polymer, or Lithium Iron Phosphate?

The latter have slightly less capacity, but are considerably less spicy and can handle thousands of charge cycles so tend to be used more in situations like this.

MadLintElf t1_iuinyjm wrote on October 31, 2022 at 4:54 PM

The one's at work are Lithium Polymer, we need the energy density for the devices. That being said I'm glad we went with them based on the track record.

We did have an option for cheaper batteries, but the company wouldn't provide a warranty since we would be buying from another manufacturer that only covered replacements. They specifically had in the documentation that they were not responsible for overcharging the batteries or battery failure damages.