Data about battery life refer to a cell phone's ability to hold a single charge for any duration of time. The two most commonly used ways to assess a phone's battery life are talk time and standby time. Many factors can contribute to a phone's battery life, including battery type, feature(s) being used, etc.
Battery type. Most of today's cell phones use lithium-ion (LiIon) or lithium-polymer (LiPolymer) batteries. These are, of course, all rechargeable and are extremely small-sized compared to the batteries that powered cell phones in the past.
Some consider the LiPolymer battery to be superior than the LiIon in terms of efficiency.
Talk time. The expression talk time refers to how much talk-time a cell phone is capable of on a single battery charge. Most manufacturers give list a talk time that is based on average conditions, so your actual experience may vary depending on how you use your phone and where you are.
Standby time. Standby time is the amount of time a cell phone can remain switched on on a single battery charge--without being used to talk, send or receive messages, play games, surf the web, etc., activities that require more energy from a battery.
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