These chargers are sold as Adaptive Fast Chargers as stated on the factory chargers. I bought these for my Galaxy S7. With a charge of about 27% I connected one of the new chargers. The message on the phone is "Charging 2 hours 24 minutes to fully charge". So I plug a factory charger into the phone with the same percentage of charge and the factory charger message on the phone says "Fast charge 37 minutes to full charge". You can charge the phone but I will never know because I don't need a "slow" charger as I already have one. Don't waste your time trying to get them back. I will not buy anything from this seller again.
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