IPhone not user-replaceable. The iPhone can be charged when connected to a computer for syncing across the included USB to dock connector cable, similar to charging an iPod. Alternatively, a USB to AC adapter (or "wall charger", also included) can be connected to the cable to charge directly from an AC outlet. Some models of the iPhone support wireless charging. Apple runs tests on preproduction units to determine battery life. Apple's website says that the battery life "is designed to retain up to 80% of its original capacity after 400 full charge and discharge cycles", which is comparable to iPod batteries.
JUNQ and IPOD that protein aggregation may actually be a tightly regulated, organized process, by which the cell protects itself from toxic proteins by sequestration to inclusion bodies. In 2008, Daniel Kaganovich showed that eukaryotic cells sort misfolded proteins into two distinct inclusion bodies in a well-managed cellular process: JUNQ and IPOD are evolutionarily conserved, and are found in specific and defined cellular sites. Delivery of misfolded, aggregated proteins to JUNQ and IPOD require an intact cytoskeleton and specific cellular quality control components, such as Heat Shock Proteins (HSPs). The partition into the two distinct inclusion bodies is due to the different handling