Manny is a long haul truck driver and he has a lot of gadgets that require AC, so he needs an inverter. What's the best one that will provide power without overheating his gadgets? Leo says that in theory, the gadgets won't take more wattage that they can handle and if they are getting warm or even hot, that's just normal. Well made devices have circuitry that prevents overcharging.
lithium ion batteries
Clarence is concerned about the new trend to have irreplaceable batteries in devices, like the new Nintendo Switch. Leo says that iFixIt says the battery in the Switch can be replaced with the right tool and replacement part. It's doable. But there's no user serviceable part for the battery in the iPhone. It's all glued in now. Apple will repair a battery for you, but it can't be done by the user. Clarence's battery should last around 500 complete charges. Once that happens, they are dead.
Igor has been hearing about battery issues on the iPhone. How can he find out if his is part of the recall? Leo says that Apple has a site that he can check here. Chances are, it may not be part of it. In the end, batteries do fail. They wear out after 500 full recharges. Also, he won't want to run them down and then recharge every time. He should plug it in when he's not using it.
Graham is worried about the lithium-ion batteries that phones use. Leo says that everything uses lithium-ion these days. In the Tesla, they have protected the car by putting titanium barriers between the lithium-ion batteries and the rest of the car. They are dangerous if punctured because they will instantly catch fire.
Jim's Lenovo laptop gets a notification that his lithium ion battery is 70% depleted. Leo says that there's a lot of mythology and garbage about LiOn batteries. But what we do know is that a standard battery has a cycle life of about 500 recharge cycles. They've discovered why and are working on designs to make sure batteries never wear out. But that isn't in the current state of the art. You can do things to make sure you get the most out of your battery by 1) never completely depleting your battery and when you do store them, store them half charged.
A student researcher has taken a jell and coated the inside of a lithium ion battery with it, that will enable it to cycle hundreds of thousands of times. The result is that if commercialized, there could be batteries that could last forever. It doesn't improve capacity, but it does eliminate the wearing out issue.
Leo says it isn't harmful at all, and Apple even sells an external battery for the iPhone 6/6s. In general with these charging cases, when you charge the case it will also charge the phone. On the Mophie cases, there's a switch for when you want to switch to the battery. When it comes to Lithium Ion batteries, though, the best thing to do is keep it charging. The battery will last longer if it stays charged vs charging and discharging. It's definitely not good to let it fully drain.
Richard has a Barnes and Noble Nook reader and he wants to know how many full recharges he gets. Leo says that he'll get about 500 full recharges as any given lithium ion battery will. But Richard hasn't ever run down his phone, keeping it plugged in most of the time. Now he can't recharge it. Leo says that a battery is always going down/up and it could just be worn out.
Dave has seen a website that promises upgraded Lithium Ion batteries for better safety and to increase battery life. Leo says that once he sees a study that verifies the claims, he'll buy into it. Leo has seen a lot of promises on the internet over the years and very little in the way of delivery. It's definitely something that users want, but the proof is in the pudding.
Riley has a Windows 7 laptop and he's getting an error message that his battery should be replaced. Since Riley's laptop is about two years old, the time is about right for Riley to replace that Lithium Ion battery since they only have 500 fixed recharge cycles. So yes, Riley probably needs to replace the battery. If he keeps his laptop always plugged in, he'll be limiting the number of recharge cycles. He should only recharge the battery when he needs to for being out and about.