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    M5Stick CPlus Battery Replacement

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    • greenleafG
      greenleaf
      last edited by

      I've got an M5Stick CPlus whose battery seems to have died. The factory test software shows a voltage error when I power it up. I tried shorting the BAT pin to GND as others have suggested but it just won't hold a charge.

      Is it even possible to get a replacement battery?

      ajb2k3A 1 Reply Last reply Reply Quote 0
      • ajb2k3A
        ajb2k3 @greenleaf
        last edited by

        @greenleaf If you have a small tip soldering iron and good hand eye coordination, yes you can just desolder the old one and add a new battery.

        UIFlow, so easy an adult can learn it!
        If I don't know it, be patient!
        I've ether not learned it or am too drunk to remember it!
        Author of the WIP UIFlow Handbook!
        M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

        1 Reply Last reply Reply Quote 0
        • greenleafG
          greenleaf
          last edited by

          I'm ok with a little soldering, is it a standard battery? I guess I can take it out and look for a serial or part number...

          1 Reply Last reply Reply Quote 0
          • felmueF
            felmue
            last edited by

            Hello @greenleaf

            a while ago I took my M5StickCPlus apart and took some pictures which might help you. See here.

            Thanks
            Felix

            GPIO translation table M5Stack / M5Core2
            Information about various M5Stack products.
            Code examples

            H greenleafG 2 Replies Last reply Reply Quote 0
            • H
              HWTaro9 @felmue
              last edited by

              @felmue I just noticed that my StickC Plus doesn’t have a RTC backup battery. Is that a problem?

              1 Reply Last reply Reply Quote 0
              • felmueF
                felmue
                last edited by

                Hello @HWTaro9

                The RTC backup battery is meant to keep the RTC powered (and with that to keep date and time) even if M5StickCPlus isn't plugged into USB and the main battery has run out of juice. Or in other words even after the main battery has been depleted (and the M5StickCPlus no longer can run from the main battery) the RTC still keeps date and time as long as the RTC backup battery has some juice left.

                So no, a missing RTC backup battery isn't a problem per se. The M5StickCPlus still works normally except for the fact that date and time (in the RTC) gets lost when the main battery runs out of juice.

                I am just curious. When your write 'doesn't have a RTC backup battery'. Do you mean the RTC backup battery is physically missing or do you mean it is dead or not functioning?

                Thanks
                Felix

                GPIO translation table M5Stack / M5Core2
                Information about various M5Stack products.
                Code examples

                H 1 Reply Last reply Reply Quote 0
                • greenleafG
                  greenleaf @felmue
                  last edited by

                  @felmue This is awesome, thanks for the teardown photos. I might even have one of those batteries already...

                  1 Reply Last reply Reply Quote 0
                  • H
                    HWTaro9 @felmue
                    last edited by HWTaro9

                    @felmue it’s physically missing from the board. The main board of my StickC-PLUS

                    1 Reply Last reply Reply Quote 0
                    • felmueF
                      felmue
                      last edited by

                      Hello @HWTaro9

                      hmm, I guess you'll need to check with M5Stack support.

                      Thanks
                      Felix

                      GPIO translation table M5Stack / M5Core2
                      Information about various M5Stack products.
                      Code examples

                      1 Reply Last reply Reply Quote 0
                      • H
                        HWTaro9
                        last edited by HWTaro9

                        M5 said that the battery lasted for not a lot of time, meaning that after about 12 hours it’s dead. So they removed it from later versions. If anyone has a later version and wants to solder their own battery the model is MS614SE-FL28E .
                        (My StickC-Plus is a V1.2, so all 1.1-1.2 versions don’t have it)

                        greenleafG 1 Reply Last reply Reply Quote 2
                        • greenleafG
                          greenleaf @HWTaro9
                          last edited by

                          @hwtaro9 makes sense. The battery is tiny, probably only useful for small toy drones or maybe low power LCD displays

                          1 Reply Last reply Reply Quote 0
                          • H
                            HWTaro9
                            last edited by

                            It was meant for keeping the RTC accurate, but it even did a bad job at that.

                            1 Reply Last reply Reply Quote 0
                            • D
                              drewbp
                              last edited by

                              Did anyone find a place to order the battery for the M5stick CPlus?

                              1 Reply Last reply Reply Quote 0
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