diff --git a/README.md b/README.md
index f946b39..0d483f3 100644
--- a/README.md
+++ b/README.md
@@ -46,9 +46,9 @@ There're three types of connection for Neato XV devices, which are directly seri
 
 ## nxvforward
 
-<img width="350" height="250" src="doc/images/nxvforward-1.png" alt="Connect to /dev/ttyACM0" >
-<img width="350" height="250" src="doc/images/nxvforward-2.png" alt="Connect to COM12" >
-<img width="350" height="250" src="doc/images/nxvforward-4.png" alt="Client Test" >
+<img width="194" height="188" src="doc/images/nxvforward-1.png" alt="Connect to /dev/ttyACM0" >
+<img width="194" height="188" src="doc/images/nxvforward-2.png" alt="Connect to COM12" >
+<img width="194" height="188" src="doc/images/nxvforward-4.png" alt="Client Test" >
 
 This is a TCP server, which is can forward the command and data between the device/simulator and client.
 The bind address can be such as `120.0.0.1:3333` to accept connection from local only or `0.0.0.0:3333` for connections from other hosts.
@@ -82,6 +82,8 @@ Example:
 
     nxvlogbatt-plotfig.sh nxvlogbatt-data 0 "" "Battery Status" ""
 
+<img width="600" height="300" src="doc/images/fig-nxvlogbatt-data-charging-oem-m2-1.png" alt="Charging" >
+
 
 Implementation Details
 ----------------------
diff --git a/doc/images/fig-nxvlogbatt-data-charging-oem-m2-1.png b/doc/images/fig-nxvlogbatt-data-charging-oem-m2-1.png
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index 0000000..6f5aa85
Binary files /dev/null and b/doc/images/fig-nxvlogbatt-data-charging-oem-m2-1.png differ