Overview: Stronger batteries have emerged as a quintessential requirement in smartphones as evolving daily use cases in these devices now require more power. However, the consumer trend is leaning strongly towards more compact smartphone form factors due to the ease of use it provides, provided battery performance is not compromised. Resultantly, OEMs are adapting by introducing innovations like Silicon-carbon batteries that provide more energy capacity than traditional lithium-ion batteries, without trading off on the device size. Silicon batteries could potentially be a pivoting point in smartphone energy storage and more OEMs are quickly adopting this new battery technology. In the near future, the market is expected to see more compact smartphones, an apparent shift driven directly by consumer sentiment, and silicon-carbon batteries are expected to bridge the gap. This report offers a comprehensive analysis on the battery capacity trends, adoption by price band, and latest innovations in the battery technology.