MadLintElf t1_iuio7is wrote

And boy do we love to exploit gaps in the law since people are making money and other people are being misled at the least and seriously harmed at the worst.

Here in NYC I've been hit by two e-bikes in the last 3 years. Both times they were on the sidewalk at night, no lights and I was hit from behind.


MadLintElf t1_iuinyjm wrote

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.


MadLintElf t1_iuf1lzo wrote

Ever watch Jerry Rig Everything on Youtube, Zack does a teardown of a Rivian truck's battery pack. All compartmentalized, big honking blocks of batteries with cooling components.

It's a lot more doable than you think.

As for putting them in the frame, it sounds good but would still have to reside in the lower portion to keep the center of gravity proper.


MadLintElf t1_iuf0oiw wrote

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.


MadLintElf t1_iuf09oc wrote

Rivan does it with there vehicle batteries, Tesla does it as well. At my hospital we use mobius batteries, they last 8 hours but I've seen them disassembled and they are just a bunch of separate batteries.

It is more costly, but like the mobiuis battery I mentioned above, when one battery goes it's just one battery, a bit of smoke and that's it. The crappy one's do have bad soldering and nothing to keep that cascade from happening.


MadLintElf t1_iuej3aw wrote

I've lived in NYC for over 50 years. I try to only use glass bottles and containers to store everything and everything I buy comes in plastic that can't be recycled because it's cheaper to sell that way.

Thankfully we have ethnic markets, and you bring you own bag. Bulk rice, beans, fruits, dried good, etc. I'd rather recycle a glass bottle and brown paper bags than toss plastic into a landfill.

But you are right, the manufacturers have zero incentive to sell things that last. Heck I have an old black and white TV that is older than I am and still works. Can't tell you how many LCD tv's we have tossed over the years.

I keep saying our garbage dumps will be the mines that our future generations will be digging though. If we don't become sustainable we'll drown in our own crap and nothing will be left for future generations.


MadLintElf t1_iueckso wrote

When you want an electric scooter and don't have a lot of money it seems like a good deal. Yes the lower price should be a dead giveaway, but these batteries should be regulated and not allowed to be sold due to them being improperly manufactured.

We made our neighbor keep the charger and battery in a concrete garage for charging. At first they were offended, but we explained and showed them the video's and yeah they had no problem after that.


MadLintElf t1_iuec6u4 wrote

So many of the batteries are manufactured on the cheap. They are not compartmentalized and cause a chain reaction that results in catastrophic failure.

Those types of batteries need to be banned, I have shops in my neighborhood and looking at the batteries you can't just tell. Best to pay more money from a reputable dealer and of course don't mismatch chargers.