Today Samsung announced that it will be offering free replacement batteries to about 30-percent of German Galaxy S4 owners. The free replacement batteries stem from many German S4 owners who have been reporting issues such as extremely fast power drain, to some extreme cases where the battery pack actually swells up enough to open the phones casing.
For now, it appears that the defective batteries are contained to handsets purchased in Germany which indicated that only a single batch of batteries could have been defective. If your battery is beginning to bulge, or rapidly drain of its power, Samsung urges you to seek out the nearest service center as soon as possible.
"We are aware of this issue, which has affected a limited number of customers." Samsung said in a statement. "We ask all affected customers to please visit their nearest Samsung Electronics service centre, where they can receive a replacement battery for free of charge. We remain committed to providing the best possible user experience for our customers."