diff --git a/docs/helios64/img/ups/battery.jpg b/docs/helios64/img/ups/battery.jpg
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diff --git a/docs/helios64/ups.md b/docs/helios64/ups.md
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--- a/docs/helios64/ups.md
+++ b/docs/helios64/ups.md
@@ -10,13 +10,13 @@ When system detects AC power loss, the system will switch instantly to battery m
 
 ## Li-Ion Battery
 
-As part of Helios64 accessories, we provide a specially designed Li-Ion Battery for the UPS feature.
+As part of Helios64 accessories, we provide a specially designed Li-Ion Battery for the UPS feature (SKU: H64-BAT-01 ).
 
 ![Li-Ion Battery](/helios64/img/ups/battery.jpg)
 
-The actual cells of the this battery pack is the *Panasonic NCR18650BD*, we use 2x cells in 2S1P configuration. The battery pack is equipped with a thermistor to monitor the cell temperature.
+The actual cells of the this battery pack is the *Panasonic NCR18650BD*, we use 2x cells in 2S1P configuration. The battery pack is equipped with a protection IC (HY2120) and a thermistor to monitor the cell temperature.
 
-The battery pack is rated 7.4V 3200mAh (23.68Wh) with max continuous discharge of 10A.
+The battery pack is rated 7.2V 3180mAh (22.9Wh) with max continuous discharge of 10A.
 
 !!! Info
     It's possible for users to build their own battery if they respect the same above specification and pinout.