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Charging macbook pro mid 2014 15" with magsafe 2 60W charger

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    #1

    Charging macbook pro mid 2014 15" with magsafe 2 60W charger

    Hi guys.
    May I charge this model with 60 W charger?
    I know it requires 80 W to charge, but don't want to buy one.
    If it specifically requires and 60 W can damage macbook and vise versa, I guess I will have to buy 80 W one.
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    #2
    It will run off it but not charge the battery. 60W is for A1502, A1398 needs 85W.

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      #3
      U sure it won't charge the battery?
      he used modified Toshiba 60 W charger and told me it charged it.
      Last edited by paparazzo79; 09-29-2024, 07:15 AM.

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        #4
        So I purchased the new charger but it is fake, got scammed.
        To be quite honest genuine are rare to find here.
        So I dunno should I use it, cuz I am scarred it will damage the laptop.

        Comment

          #5
          The fake chargers lack the soft-start mechanism that is present inside of the original power adapters. That is, they are 'hot' as soon as you plug in the AC power source to the power adapter if it is a fake. Respectively, if you scrape / touch the contacts onto a metal surface, there will be sparks. The original adapter is off till the logic board mating is confirmed and only then the higher voltage is enabled.

          A suggestion (only) is to consider a USB Type C to magsafe adapter. Then use a reliable USB Type C power adapter that has OVP / OVC protection. About to meet with a few thousand power adapter manufacturers in HK next week - will ask around if they have reliable solutions for magsafe adapters. Many do not even have proper certifications such as CE / CSA / UL approvals but are 'cheap' on price.
          Last edited by mon2; 10-01-2024, 01:06 PM.

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            #6
            USB-C to Magsafe 2 adaptors (from China at least), suffer the same issues as the knock off's as all the smarts are in the plug itself. I have a few I use with a 87W USB-C charger - they work but won't power on a board without battery. The knock off's cause BATLOW to remain low, and they only work in the presence of a working battery.

            Original Apple chargers are much more expensive (usually over $120 here in Australia). Knock offs are around $35 so that gives you an idea of the authenticity. Hackaday did a teardown of each some time ago, the knock off internal construction has many components missing to that of the original, such as a PFC at the head of the switch mode. Pretty sure the quality of the DC will be quite shitty too, but the internal power supply of the MAC can filter that out.

            The SMC determines what type of charger is connected by the one wire circuit, that info comes from within the magsafe plug itself. Unless 85W is connected (or one of those 100W PD USB-C to Magsafe chargers from China), then it will refuse to charge the battery on A1398.
            Last edited by reformatt; 10-01-2024, 03:58 PM.

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              #7
              Good info. Thanks. Locally we have Mobile Sentrix who offers grade A/B OEM power adapters. Just ordered one tonight at $30 Canadian + shipping for a 60W t-style MagSafe 2 for powering an A1502. Their presence is strong in the USA and Canada and kind of like a mini version of AliExpress. They are very receptive to feedback. They have started to carry at least 3 different items we requested. I am so close to ordering the u-bos2 tool which is required for an iMac 2017 but will try my luck at the Wanchai computer mall next week. Maybe someone will have an affordable T2 flash for a desperate Canadian.

              Comment

                #8
                Originally posted by mon2 View Post
                The fake chargers lack the soft-start mechanism that is present inside of the original power adapters. That is, they are 'hot' as soon as you plug in the AC power source to the power adapter if it is a fake. Respectively, if you scrape / touch the contacts onto a metal surface, there will be sparks. The original adapter is off till the logic board mating is confirmed and only then the higher voltage is enabled.

                A suggestion (only) is to consider a USB Type C to magsafe adapter. Then use a reliable USB Type C power adapter that has OVP / OVC protection. About to meet with a few thousand power adapter manufacturers in HK next week - will ask around if they have reliable solutions for magsafe adapters. Many do not even have proper certifications such as CE / CSA / UL approvals but are 'cheap' on price.
                Ahh my friend I can not find genuine charger, and more even complicated the magsafe adapter.
                Sorry I opened new thread.
                it is just that macbooks are not populary used here.
                And people mostly sell them without chargers.

                Comment

                  #9
                  Originally posted by reformatt View Post
                  It will run off it but not charge the battery. 60W is for A1502, A1398 needs 85W.
                  I connected the 60 W genuine charger and it is charging battery normally.
                  But the output is 19V not 20V.
                  i suppose there is +/- 0.5 V tolerance, so is fine.

                  Comment

                    #10
                    Originally posted by reformatt View Post
                    It will run off it but not charge the battery. 60W is for A1502, A1398 needs 85W.
                    Its the other way around ....it will charge slower but fine. it will not run / post if using low watt charger when battery disconnected. Always use a 85watt OEM charger on your test bench. 3rd party charger power ratings are meaning less

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