Keep your compatible Samsung cell phone charged with this Ultralast CEL-I9500NF rechargeable battery, which delivers up to 3.8V of power. The lithium-ion battery offers overload protection to help ensure the safety of your device.
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This is the second battery replacement I have purchased for my Galaxy s4. The original battery as well as the 1st replacement bubbled. Apparently this was a known issue but samsung refused to replace the battery so I was forced to purchase it on my own. This battery came charged about 50% and lasts well into the 2nd day on one charge so far. Very pleased with this replacement. Hoping it doesn't begin to bubble later as the others did.