If technology can now fit more and more memory into tiny SD cards, why cant battery capacity be improved for smart phones?

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If technology can now fit more and more memory into tiny SD cards, why cant battery capacity be improved for smart phones?

In: Physics

It can. Battery tech is improving all the time. The problem is getting that new technology to market. Often times battery tech ‘breakthroughs’ are found in a lab. The battery technology in your phone is a more mature and established technology that people have been able to scale to a viable/economical industrial level. Until that happens for the advances in battery tech you likely won’t see it in any phones.

Battery does improve, it’s just that the power consomption of most smart phones increase as the same time since they make the computer more powerful, get more memory, etc.

It is improving, they’re constantly putting in batteries with a larger capacity. However, most high end phones would rather use that extra capacity to run better screens, faster CPUs, able to run more background tasks (etc) as opposed to continuing to extend battery life.

It can, batteries *have* improved. But at its core your premise is a non sequitur, the ability to produce dense memory chips doesn’t really have anything to do with the ability to produce powerful chemical electricity storage.

Battery performance does improve, but so does every other feature on a phone. So the battery will be better, but the phone itself will have a higher power requirement, so you won’t necessarily notice the increased battery power