Samsung Galaxy S3 and S4 users are facing an imminent danger as reports said that the batteries of the devices swell.

According to reports, users complain on batteries swelling that largely concern the users' safety. Many consumers are concerned that the battery may explode and may cause injuries or health risks to users.

A report also said that it is a matter of warranty. It seemed that the batteries swell after a year of usage. Most of these customers are experienced the swollen batteries after one year after purchase which is six months after the warranty expired and many users were angered by this. Apparently, the battery warranty is just six months.

Samsung offers free replacement on the battery of the aforementioned devices. Users can simply drop by the nearest Samsung service point and get a free replacement battery. The South Korean company was compelled to act on the issue as the return rates of the devices increased by 30% with most users complaining on the battery.

A report also said that it is a matter of warranty. It seemed that the batteries swell after a year of usage. Most of these customers are experienced the swollen batteries after one year after purchase which is six months after the warranty expired and many users were angered by this. Apparently, the battery warranty is just six months.

Samsung told TrustedReviews, "We are aware of this issue, which has affected a limited number of customers."

"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," the company's spokesman also added.

It is still unconfirmed that if this is just a case of bad batch of batteries produced last Oct. But it is quite interesting that Samsung Galaxy S3 and S4 batteries experience similar problems.

There were incidents before of battery exploding. Early this year, CNET cited Associated Press that a man was walking with his Samsung mobile phone in his pocket when the battery caught on fire. The man received second-degree burns and a one-inch wound on his thigh. Officials said that the battery was not inside the phone when it exploded.

Samsung batteries were made out of Lithium ion, which is notorious for overheating and may explode when expose to heat. This posed a major health problem to users.