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    Review "BATTERY"

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    • DimiD
      Dimi
      last edited by Dimi

      Consider one of the many modules for M5Stack - "BATTERY" (Fig. 1). Buy it now on Aliexpress

      alt text
      Figure 1. A module BATTERY composed of base and finishing modules

      This module is a plastic frame in red, on which are fastened by means of screws special printed circuit Board (Fig. 2) with two connectors 2 to 15 and firmly fixed Li-ion battery [3.7 V and a capacity of 850 mAh] (Fig. 3).
      On the frame on the right side (Fig. 4) embossed inscription BATTERY and a cavity under a flat-blade screwdriver for easy removal of a module, because due to connector 2 of 15 modules are kept pretty tight.
      This module is designed to increase the time of Autonomous operation of the basic and additional modules.

      alt text
      Figure 2. View of module top

      alt text
      Figure 3. The module on the back side

      alt text
      Figure 4. The module side

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

        Is there a way to read the charge level of the battery?

        D 1 Reply Last reply Reply Quote 0
        • D
          dda @dda
          last edited by

          Looking at the schematics here, it looks like the IP5306 is connected to GPIO35 and 36. 2.1V each. However, in Config.h we have this definition:

          [code]#define LORA_IRQ_PIN 36[/code]

          That would conflict with the reading of the battery charge, no?

          While using LoRa, I am reading ADC1_CH7 and ADC1_CH0. Here's what I get.

          ADC1_CH7: 0 0.00
          ADC1_CH0: 346 0.71

          The value for ADC1_CH7 is always 0. The value for ADC1_CH0 goes up and down. Weird.

          D 1 Reply Last reply Reply Quote 1
          • D
            dda @dda
            last edited by

            A reply would be nice...

            JJJ 2 Replies Last reply Reply Quote 0
            • JJJ
              JJ @dda
              last edited by

              @dda
              Hi, re. your original question, have you seen the excellent mod that reaper7 added recently ?
              http://forum.m5stack.com/topic/85/m5stacksam-application-menu-library/4

              D 1 Reply Last reply Reply Quote 1
              • JJJ
                JJ @dda
                last edited by

                @dda !0_1518258146796_f27ea0bf-5dbd-4020-98ab-d039ea8a7183-image.png

                1 Reply Last reply Reply Quote 1
                • D
                  dda @JJ
                  last edited by

                  @jimit Didn't see that, thanks!

                  1 Reply Last reply Reply Quote 0
                  • world101W
                    world101
                    last edited by

                    What is the runtime on the 850 mAh battery?

                    D 1 Reply Last reply Reply Quote 0
                    • D
                      DoNcK @world101
                      last edited by

                      @world101 Using the 150ma one, I can run my M5Stack limited edition for 30~40 mins with the screen turned off and a simple program running, doing nothing else than turning the screen off (WiFi was not setup).
                      Running in the same conditions, I think the 850 should run for ~3 hours approximately.
                      I ordered one but I cannot confirm yet.

                      world101W dasloloD 2 Replies Last reply Reply Quote 0
                      • world101W
                        world101 @DoNcK
                        last edited by

                        @donck
                        Thanks. What core module version(s) do you have? Let me know what you experience on the 850 mAh after testing it. Also, if you could provide the internal dimensions of the area where the battery would go inside the battery module, that would be great. Curious if a larger mAh battery could fit in there.

                        D 1 Reply Last reply Reply Quote 0
                        • JJJ
                          JJ
                          last edited by

                          @world101 @donck

                          Hi, i was going to make around the same estimate of approx 3 hrs for the add-on battery module.... I had around same results as DoNcK with standard internal battery.... roughly 35 mins just sitting with menu program running on the M5... haven't tested the battery module....but it seems to last quite a long time. I def recommend it.

                          Of course longer times will be possible using various power saving options....

                          Here's a pic with the battery module dimensions... not much space there !

                          0_1519068317099_Battery module inside dims.jpg

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                          • D
                            DoNcK @world101
                            last edited by

                            @world101 在 Review "BATTERY" 中说:

                            @donck
                            Thanks. What core module version(s) do you have?

                            The grey limited edition and the one with PSRAM (both performing the same)

                            1 Reply Last reply Reply Quote 0
                            • dasloloD
                              daslolo @DoNcK
                              last edited by

                              @donck 在 Review "BATTERY" 中说:

                              (WiFi was not setup).

                              Is WIFI off by default?

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