there was a recent study that prooved apps which are not paid for consume more battery life than those which you did pay for. Also things like picture, wallpapers or screensavers tend to use up a lot of battery life on your smartphone.
It depends on how you use and maintain it.
Sanyo and Samsung both make camcorders that have the longest battery life.
The larger PDA phones such as the Blackberry tested out as having the longest battery life.
All of the radio models share the same battery life.
The acer netbook claims to have 8 hours of battery life, which is far more then most laptops,
The best rechargable battery with the longest life span would have to be the new Hybrio rechargable batteries .
Any of the digital atomic clocks have a battery life ranging from 2-3 years.
To extend the battery life of a smartphone and preserve its top performance, it is recommended to avoid overcharging, keep the battery between 20-80 charged, use a high-quality charger, avoid extreme temperatures, and minimize background app usage.
The lifespan of a battery symbol in a smartphone typically represents the remaining charge of the battery and can vary depending on usage and settings.
It has to be Doogee S58 Pro. It has 2-3 days to battery life.
Energizer: They been doing this the longest and have the best batteries to use for recharging