[claudiafields]

I've had two Samsung Duos smartphone so far and both ended up with the battery bloating? can anybody explain when smartphone batteries bloat like this. Usually, we use various types of batteries in various devices. But most of the time, smartphone batteries bloat than on other equipment.

[mustang7757]

I've had two Samsung Duos smartphone so far and both ended up with the battery bloating? can anybody explain when smartphone batteries bloat like this. Usually, we use various types of batteries in various devices. But most of the time, smartphone batteries bloat than on other equipment.

Possible using wrong chargers.

[CellPhOneAGe]

This indicates that the battery life is over. To avoid battery bloating, you have to use the original charger as much as possible, or use the brand-approved charger. However, it is recommended that you bring your purchase invoice, repair card, mobile phone, battery to the local Samsung after-sales service center, their professional engineers will help you to carry out on-site inspection and judgment.

[B. Diddy]

can anybody explain when smartphone batteries bloat like this.

Do you mean why they bloat like this? See this for the why: https://www.ifixit.com/Wiki/What_to_...wollen_battery

[anon(10181084)]

Brand approved charger has nothing to do with it. The phone should usually have protection should your aftermarket charger misbehave. The wall "charger" is more of a power supply, and the actual charger is inside the phone and controls the safe charging of the battery. As others have said, your battery just reached end of life.

[PackersOwner1]

Brand approved charger has nothing to do with it. The phone should usually have protection should your aftermarket charger misbehave. The wall "charger" is more of a power supply, and the actual charger is inside the phone and controls the safe charging of the battery. As others have said, your battery just reached end of life.

Exactly. USB power by itself is not suitable for charging batteries. To properly charge a battery, you must have some sort of charge controller that detects the battery's state of charge, and delivers the correct voltage and current. Some sort of DC-DC converter is used to create the right voltage for that particular battery.

The original USB power specification allowed up to 0.5A current at 5V, for 2.5W of power transfer. And that was for "high-power" devices! Quick charging bumps that up to as much as 36W, which is a lot to dump into a device the size of a phone that has no heatsink. IME, early versions of Quick Charge tried to charge phone batteries faster than was safe. My newer phones have power supplies limited to 18W.

If you have a phone that's prone to battery bloat, one thing you can do is avoid quick charging by using a USB power source that doesn't support Quick Charge. A USB power source that supplies no more than 2A at 5V (a lot of generic USB power ports do this) will charge a phone in a reasonable amount of time, but not so fast that the battery bloats. Also, don't let your phone go down to almost dead before you charge it, but don't leave it connected to USB power all the time. Every case of battery bloat I had was on phones that I kept plugged in 24x7.

[J Dubbs]

With expensive sealed phones with non-replaceable batteries, the easiest way to get us to upgrade is to design the batteries with a limited lifespan. It's called planned obsolescence. And it works. Ever wonder why a $50 kindle battery will far outlast a $1000 smartphone battery? Because people don't think twice about upgrading a $50 kindle to a newer version... so they sell tons of them. My wife has 5 kindles she's upgraded from, and they all still work and hold a charge great. And she's left every one of them on all day and charging all night. They're indestructible lol.

But $1000 smartphones people tend to hold on to a lot longer. So how do the phone manufacturers get us to keep buying? They seal the battery in the phone and make sure it's only a 2 to 3 year battery. Sales problem solved

[Mooncatt]

I know this is an old thread and the OP hasn't responded back, but I'd like to address the charger issue in case others run across this thread.

Aftermarket chargers are generally safe. Obviously it's a bit of buyer beware, especially when buying something like a dirt cheap dollar store charger, but the name brand chargers (Anker, Aukey, Chotech, etc.) are fine. There are multiple charging and power supply standards for USB, and chargers and phones will communicate with each other to negotiate the proper protocol to use. With some of the newest protocols, even the cable design comes into play.

The underlying rule of all the different protocols is that they must also be backwards compatible. A QC 4.0 charger will also work with earlier versions, and with traditional 5V charging. You could plug in a phone from 10 years ago and it would charge fine.

We don't even know if the OP was using the OEM or aftermarket charger. We also don't know the age of the batteries in question, or charging/usage habits. If this is a repeating problem, there's a small chance the charger is defective, but there's also a number of other variables that could cause the swelling.