m5-docs/docs/en/base/core_bottom.md

# Base CORE Bottom

<el-tag effect="plain">SKU:C001-C</el-tag>

<div class="product_pic"><img src="assets/img/product_pics/base/core_base_03.webp"><img src="assets/img/product_pics/base/core_base_02.webp"></div>

## Description

**Core BOTTOM** is the bottom part of M5Core like M5Basic and M5 GRAY, with M-BUS socket and extend pins on the side, also include a Lipo battery . If you want to buy these bottoms separately, you can get it from here.

<img src="assets/img/product_pics/base/core_base_01.webp" width="40%" height="40%"><img src="assets/img/product_pics/base/core_base_04.webp" width="40%" height="40%">

## Product Features

- Li-po battery: 110 mAh @ 3.7V

## Include

- 1x Core BOTTOM


## Specification

<table>
   <tr style="font-weight:bold">
      <td>Resources</td>
      <td>Parameter</td>
   </tr>
   <tr>
      <td>Net weight</td>
      <td>20g</td>
   </tr>
   <tr>
      <td>Gross weight</td>
      <td>32g</td>
   </tr>
   <tr>
      <td>Product Size</td>
      <td>54*54*5mm</td>
   </tr>
   <tr>
      <td>Package Size</td>
      <td>60*57*17mm</td>
   </tr>
 </table>

**M-Bus**

<img src="assets/img/product_pics/core/M-BUS.webp" alt="M_BUS"  width="60%" height="36%">

<img src="assets/img/product_pics/base/core_base_05.webp">


<script>

   var purchase_link = 'https://m5stack.com/collections/m5-base/products/battery-bottom-150mah';

   anchor_search(purchase_link);
   scrollFunc();

</script>