diff --git a/src/rn-dy-glucose-driver.js b/src/rn-dy-glucose-driver.js
index 54112bf..334c9a3 100755
--- a/src/rn-dy-glucose-driver.js
+++ b/src/rn-dy-glucose-driver.js
@@ -335,7 +335,6 @@ export default class RNDYGlucoseDriver {
             this._eventMap[DYG_ON_GET_BATTERY] = (deviceInfo) => {
                 console.log(TAG, 'resolve ' + DYG_ON_GET_BATTERY);
                 const { value } = deviceInfo;
-                const percent = (value - 2.85) / (2.95 - 2.85); // 改成2.95貌似比较合适
                 resolve(percent);
             }
         });