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I wouldn't bet your life on that fire extinguisher. An actual class D fire extinguisher costs close to $1000. Once thermal runaway starts most likely the battery is going to burn until it runs out of fuel.

You might be able to look them up in the UL database: https://productiq.ulprospector.com/en/search

Are you, though? Some bikes like Specialized use a propietary battery, but those are almost always quality batteries. Many cheap bikes use generic batteries that can be replaced. A good battery from EM3EV will set you back the same or less than that cabinet.

It seems unlikely the connector sparking caused the battery to not take a charge. That could pit or corrode the connector and maybe the charger isn't getting a good connection with the charging connector contacts. What kind of connector does the battery use for charging? There may be...

You could replace it with any 48V lithium ion battery, but if the enclosure is different you may have to replace the mount also. If you have to replace the mount and can identify the connector used between the mount and the controller you might be able to save yourself some soldering. Common...

Or you could just wrap the chain around your largest rear sprocket, through the derailleur, and around your largest chainring, pull it tight, and then add two links and remove the rest. That's what I do.

Battery failures are usually a result of manufacturing defects, physical damage, or abuse. If you have a quality battery, it should have a BMS that prevents charging the battery at too high a current. It will shutdown the battery properly at the low voltage cutoff. It won't discharge at too...

??? I haven't personally experienced an ebike battery fire. I use a Grin Satiator. My batteries are from Grin and EM3EV. Both companies sell the Grin Satiator for charging their batteries...

I agree he should be fine. Connectors are easy, but not everyone is comfortable soldering or crimping wires. I use a headlamp when soldering, but reading glasses are a good idea.

I have no problem with confiscating property used in a crime as long as there is due process. I don't have a use for drug dealers, but I dislike the current asset forfeiture laws that allow police to seize cash, cars, and other property from someone just suspected of committing a crime.

There are electronics repair stores all over the place these days. They usually repair phones and computers, but they may be willing to do this simple repair for you if you are uncomfortable with it.

I think that those cabinets would not be able to contain the smoke unless they were vented to the outside. The first and best investment would be as @6zfshdb said and buy a quality battery built with name brand cells and never charge it unattended or while you are sleeping. Most of the time, but...

If you don't use your oven, you could charge the battery in there. Or a fireplace. An old grill or old refrigerator in the backyard works.

A lot of people use an old grill in the backyard. I charge in the kitchen, but never unattended and on a metal cart i can push out the door if it catches fire. I only have batteries from reputable sources, built with name brand cells.

It looks like they offer extra batteries and range extender batteries for it. I wouldn't throw good money after bad if there are other things you don't like about the bike. But if range is the only issue, you could buy another battery...

My wife watches those Youtube videos of police bodycams. She puts it on the TV, so I am forced to watch them also. It seems like what they do these days is have the kid call their parents with their mobile phone from the side of the road and the police wait with them for the parent. But it...

If a kid has hurt or killed someone, throwing them into the slammer is not too much. If they are just horsing around and causing an unsafe situation, I think confiscating the illegal bike and fining them makes more sense.

There are regional differences in slang, dialect, and accents throughout the United States. It's a big place. Although that has been disappearing over the years with influence of television and other media. Watch the movie My Fair Lady. It's set in the UK, but the principles are the same. My...