1. Carkid367's Avatar
    Does anyone know if the Note 4 charger is the standard quick charge 2.0? I was given one and want to know if I will actually see the benefit of it.

    Posted via the Android Central App
    11-16-2014 03:02 PM
  2. Rukbat's Avatar
    If you charge the battery at greater than 1C (the battery's capacity, IOW), you won't benefit, the battery manufacturers will, since you'll be replacing the battery more often. Quick charging is an advertising gimmick, not a technically good way to not have to replace your battery often. (Or, to put it in simple words - the faster the battery charges, the more often you're going to be replacing it.)

    Since the M8 doesn't have a user-replaceable battery, frequent battery replacements is something you don't want, even if you could get a full charge from 0 in 5 seconds. (You also don't want to let the battery get much below 40% charge before recharging it if you want it to last.)

    And, with winter approaching, there are 2 more precautions. 1) If the phone is cold (like being left in a car all night in sub-freezing temperatures), don't turn it on until it's warm inside the phone and 2) if the phone is cold, don't immediately being it into a warm humid house - the condensation will cause the same problems as any other water damage. Warm the phone up first. Outside in really cold weather, don't keep the phone in an outside coat pocket. Under your underarm is actually the best place, but under a warm coat is better than behind a thin layer of outer pocket covering.
    11-16-2014 03:31 PM
  3. Mooncatt's Avatar
    If you charge the battery at greater than 1C (the battery's capacity, IOW), you won't benefit, the battery manufacturers will, since you'll be replacing the battery more often. Quick charging is an advertising gimmick, not a technically good way to not have to replace your battery often. (Or, to put it in simple words - the faster the battery charges, the more often you're going to be replacing it.)
    While technically true, there's a couple other bits that apply to phones. For one, the phone will determine the input charge rate. Even if you have a regular charger capable of 10A, the M8 would still only pull ~1.5A from it because that is it's design. Second, lithium charging has progressed beyond 1C charge rates without degrading the lifespan. I have an OEM R/C battery rated for 3C, which I think is about where things are currently on that front. I'm sure phones and their batteries are capable of those higher C ratings too if they are QC2.0 compatible.

    If the battery in the M8 is rated at 3C, then it could take up to 39W of power (5V X 7.8A @ 3C). From what I've read, a QC2.0 charger could push 36W or so, which would be safe.
    11-16-2014 04:26 PM
  4. mark0309's Avatar
    Yes its works... I'm using it right now!
    01-05-2015 02:02 AM
  5. Raymond Elliott's Avatar
    Yes its works... I'm using it right now!
    Are you noticing any odd effects? Have you tried surfing or using some apps while charging? I ask because when using mine (off-brand Qualcomm 2.0 from Amazon) the phone will often freeze or refuse to respond. When I take it off charger, all is well.
    01-07-2015 06:58 PM
  6. srkmagnus's Avatar
    Are you noticing any odd effects? Have you tried surfing or using some apps while charging? I ask because when using mine (off-brand Qualcomm 2.0 from Amazon) the phone will often freeze or refuse to respond. When I take it off charger, all is well.
    Is it an off brand or knock off? If it's a knock off, then that could be the culprit. If suggest sticking with official or third party name brand chargers for replacement.
    01-10-2015 02:17 AM
  7. Raymond Elliott's Avatar
    Is it an off brand or knock off? If it's a knock off, then that could be the culprit. If suggest sticking with official or third party name brand chargers for replacement.
    Yeah, it was a knockoff. I returned it. Will wait 'till HTC has more in stock.
    01-11-2015 11:27 AM

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