Why We Can’t Have Nice Things

 


Private companies have been making their electric scooters available for riders to share in cities around the United States and in Europe over the past two years, and the results are a mixed bag. Riders appear to appreciate the service, even if some of them don’t show that appreciation in how they ride or park the e-scooters. City governments appear to like that the service fills gaps in their often inadequate public mass transit services, even though they are learning that more regulation is required of e-scooter companies to rein in their sometimes arrogant disregard for city ordinances and of inconsiderate riders whose behavior can be a public nuisance. Members of the public who have no personal need for the e-scooters are largely tolerant of their presence in their cities, but in many places they are finding their patience tested by the problems mentioned above.

 


The technology behind e-scooters and smartphones or, in some places, simple cellular phones, makes the business model of sharing e-scooters in a city possible. An e-scooter rigged for sharing has a Global Positioning System (GPS) module and an inexpensive, basic cellular connection for small amounts of data transfer to communicate its exact position and condition. A lithium ion battery provides power. A rider needs to use the internet application provided by the company for use on a smartphone to unlock the e-scooter and provide for payment for the service. Some localities insist as a condition for operating in their city that e-scooter companies make the service available to people without a data connection on a simple cellular phone. One of the ideas behind the service, after all, is to provide a low cost transportation option for poor people.


Lime e-scooters, Masarykovo nádraží
Lime e-scooters parked next to a subway entrance at Masaryk train station in Prague, Czech Republic. Photo by Martin2035.


The problems arise because, like all private services which take advantage of the public commons, there are abuses. The private companies either do not seek out and pay for permission to park their e-scooters on public property or they may not hold up their end of agreements they have with cities that allow their operations. Since the e-scooters do not belong to them, some riders are unconcerned about how they use them or park them. Equipment abuse is the lookout of the company operating the service, but the abuse of the commons caused by careless parking is a public nuisance at best, a menace at worst. Crime problems have arisen mostly from overnight vandalism of the equipment and from the dangers to workers who must go out at night to find and maintain the equipment.

Bringing e-scooters into cities is a good idea on its surface, and they solve a mobility problem for some poor people or for commuters without cars who find using them more appealing than walking or biking. But with the problems their presence and use are causing by abuse of the commons, it would be better if cities improved their mass transit systems instead. For one thing, e-scooters are not as ecologically benign overall as people may assume, and certainly not in comparison to mass transit options. For another, solving the problems encountered during the initial rollout of e-scooter sharing programs would appear to take up public resources in the form of tighter regulation and consequent enforcement. Wouldn’t it be easier in that case to regulate a comparatively smaller number of mass transit units and operators rather than thousands or tens of thousands of e-scooter units and operators strewn all over a city?

E-scooter sharing programs may last only a year or two more if the current abuses continue, and that’s a shame because many decent people who appreciate the services and have a dearth of other options would probably like to see them continue. Unfortunately this business model appears to go against human nature in that where the commons are concerned, there are always enough bad faith users around to take unfair or inconsiderate advantage of the situation and eventually push the public at large to demand an end to it for everyone. In the words of James Madison, “If men were angels, no government would be necessary.”
— Techly

 

Fired Up and Ready to Go

 

Samsung recalled their new Galaxy Note 7 smartphones last year after some of their lithium ion batteries overheated and either caught fire or swelled and caused other damage. The amount of batteries having problems was quite small in proportion to the amount manufactured, but once the reports got out, the resulting bad publicity constituted a fire of its own that Samsung needed to extinguish. Lithium ion batteries overheating and causing damage or dangerous fires is nothing new, and the problem is not limited to the batteries in Samsung smartphones or particularly in the Galaxy Note 7. What is relatively new are the quick charging and wireless charging features of some newer smartphones, including the Galaxy Note 7.

 

2011 SEMC BA750 back
Back of lithium ion battery,
showing safety warnings;
photo by Solomon203.

 

As batteries go, lithium ion types are particularly volatile and susceptible to malfunction from mishandling or careless manufacturing. That has been the trade-off for batteries that are lightweight, relatively energy dense, and capable of going through hundreds or even thousands of charging cycles without suffering from the memory defects of previous compact battery types like nickel cadmium. Consumer demand is for long battery life combined with quick charging, in a phone that is slim and light, and in the past few years cell phone manufacturers have responded by including quick charging and wireless charging features, while maintaining or even increasing battery capacity.

 

Wireless charging, while it has many benefits such as the capability of being a universal method of charging that eliminates dependence on proprietary wired chargers, is relatively inefficient and therefore loses more power to heat than wired chargers. Heat is bad for batteries, particularly lithium ion types. Quick charging technology that can add a 50% charge to a phone’s battery in 15 minutes requires strict attention to software design in both the charger and the phone to monitor the process, lest it cause overheating. Think of how it is possible for a NASCAR pit crew to dump over 20 gallons of fuel into a race car in less than 10 seconds using only gravity and special attention to venting, and do it safely, and then think of how complex the monitoring system must be for quickly charging a smartphone battery – which includes a flammable electrolyte – when you consider that charging introduces electricity into an essentially chemical process. It’s a wonder the proportion of failures isn’t higher than it is.

 

It turns out the defect in the Samsung Galaxy Note 7 was largely a design error of squeezing too large a battery into the phone. Or the compartment in the phone was too small for the battery. Either way, because of the tight fit the positive and negative plates within the battery got closer to each other than they should, overwhelming the separators meant to keep them apart, and causing some of the batteries to overheat to a disastrous degree. No doubt Samsung’s corporate culture is to blame for this, because unlike other manufacturers they test their batteries in house, and in this case they were rushing to compete with Apple’s impending release of the iPhone 7. The design error was either overlooked in the rush or considered not serious enough to warrant a redesign delay that might keep Samsung from beating out their chief competitor in the smartphone market, Apple. Whatever the issue was, this time Samsung’s attempt to get a jump on Apple backfired.
― Techly

VoltaBattery
Alessandro Volta’s battery on display
at the Tempio Voltiano Museum
in Como, Italy; photo by GuidoB.