Every battery has its own Charge Storing Life Time, there's no battery, rechargeable or otherwise, will last forever. All batteries suffer from aging cells and the longer they are used, the less charge capacity they ultimately will have. Rechargeable batteries are still a great way to save money and reduce waste.
Recharging time is shortened sequentially from more than 10 hours to less than one hour.
First thing we are going to consider is "Rate of charge".
Rate of charge : quantity of electrical current is allowed into battery by your charger.
To preserve batteries' charge capacity, a good charger is needed to avoid over charge. Overcharging may occur when batteries charger has high charging rate. The quicker the rate of charge, the more chance there is of over charging, which can ruin a battery's chance of holding its charge. To avoid over charge, it's depend on ability to dissipate the charging current once maximum power has been reached. Most chargers have built-in voltage regulators do this, allowing you to safely leave your cell phone or computer plugged in overnight.
One common problem in nickel-cadmium rechargeable batteries is something known as the memory effect. This is when the battery is continually recharged before it has discharged more than 50 percent of its power, causing it to essentially forget that it could fully discharge to begin with. Memory effect is caused by the formation of hard-to-dissolve cadmium crystals deep within the battery. Cadmium crystals are an unavoidable by-product of discharge; the trick is to keep them small enough to be reformed as cadmium during the charging process. When a battery is not fully discharged, the crystals deep within the battery are not affected by the influx of electrical current, so they are not reformed as cadmium and can grow into the troublesome larger cadmium crystals. The battery will still function normally, but is maxed out at 50 percent. The memory effect can be avoided by fully cycling the battery once every two to three weeks by allowing it to discharge completely, and then fully recharge.
Article source: How Stuff Works
My case of swellen battery
This happened I left my phone charged while using it as a internet connection access point for my laptop at work.
I kept doing it for weeks, and the battery size was getting bigger than its original size.
And so the battery was recharged over again every once the power went one level lower than 'fully charged'(100%), and get it fully charged. This process repeated all over again until it became very hot, and swollen slowly until it's noticeable by my sense of touch, and it went more serious till my phone's back cover can never close/clip back well again.
In short, it's a lesson for me, and note for everyone else:
In order to preserve your electronic device's battery, good to avoid using it at recharging.
Best(but it's still a hearsay) recharging way is to get your device recharged at it fully turned off, it's condition where battery getting charges at lowest 'stress'.
 |
| Swollen battery |
 |
| View from side of the battery |
没有评论:
发表评论