Now a days most of the people are using power banks rather than original chargers to charge their smartphones, Tablets and Gadgets. Do you ever get a doubt that using power banks to charge gadgets is safe or not? Do you know how far it is safe to use these power banks? In order to clarify all your doubts, you have to read the following article.
Are power banks safe or not?
We get the original phone charger along with our new Mobile phone. It doesn’t matter where the power comes from, charging is always the same.
Modern Lithium Ion and Lithium Poly cells do benefit from being “topped off”. There is no lifetime penalty for charging before they’re depleted. In fact, letting a battery get too low will reduce its lifetime. You count on the phone’s software to prevent the most extreme form of this, but it’s far better to charge before the battery dies.
A typical Lithium battery will have between 300 and 500 full charge cycles. So if you let your phone die every day, you could need a new battery in less than a year. Most people don’t do that, and so it’s more common to get two or so years out of that cell.
Hybrid cars don’t have dramatically different batteries, but they only run through a fraction if the battery’s capacity. If you had a charger that would only charge to about 80% of the battery’s capacity, and the phone cut off at 20% or so, the battery might last a decade (assuming that power cycling is the only aging mechanism… some Lithium chemistries don’t last more than 3-5 years even without any use). Of course, you’d hate the battery life, and the phone makers would eliminate one reason people upgrade to new phones, so this is unlikely to happen.
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If your power bank voltage is lesser than 5.1V never use it with your device as it will end up drawing power from your device and not charging your device or will end up drawing very little power.
When charging with your power bank either make sure that the USB cable that you use to charge your device is the one that it came with and not a cheap and not good cable. The cable should be as short as possible and as fat as possible(as it offers less resistance) otherwise the cable won’t be offering any charge current due to its high resistance.
Phones actually have circuit inside of them that charges the lithium battery properly so it doesn’t really matter what if it is a wall charger or an USB port or a battery bank. As long as the input voltage of the phone stays within limit it will be just fine.
Also See: Tips to Charge Smartphone Battery very fast