While durable and long-lasting, a Samsung battery will run its course if the owner does any of the following: uses the wrong charger, exposes the phone to extreme heat, or accidentally drops the phone in the water or any liquid substance. Ordinary wear and tear are also plausible. Samsung phones use Lithium-ion batteries, which have an average lifespan of 2 to 3 years. Towards the end of its life, your phone’s battery will start draining fast and you must replace it with a new one. Contact us if you require assistance!