diff --git a/src/domain/battery.constants.ts b/src/domain/battery.constants.ts
index ef780b4..4090ed3 100644
--- a/src/domain/battery.constants.ts
+++ b/src/domain/battery.constants.ts
@@ -35,7 +35,7 @@ export function toMysqlBoolean(value: boolean) {
 
 export function fromMysqlBoolean(value: string | boolean) {
   if (typeof value === 'boolean') return value
-  return value.toLowerCase() === MYSQL_BOOLEAN.TRUE
+  return value.trim().toLowerCase() === MYSQL_BOOLEAN.TRUE
 }
 
 export const DEVICE_STATUS = {
diff --git a/src/server/battery/mysql.ts b/src/server/battery/mysql.ts
index ec9cb6f..0d8fdd1 100644
--- a/src/server/battery/mysql.ts
+++ b/src/server/battery/mysql.ts
@@ -54,6 +54,7 @@ function getBatteryPool() {
     waitForConnections: true,
     connectionLimit: 5,
     namedPlaceholders: true,
+    dateStrings: true,
   })
 
   return pool
@@ -166,7 +167,7 @@ function createLatestWhere(input: LatestBatteryPageInput, cursor: PageCursor | n
   }
 
   if (input.lowPower !== undefined) {
-    clauses.push('current_record.is_low_power = :lowPower')
+    clauses.push('LOWER(TRIM(current_record.is_low_power)) = :lowPower')
     params.lowPower = toMysqlBoolean(input.lowPower)
   }
 
@@ -294,7 +295,7 @@ export async function getLatestBatteryPage(input: LatestBatteryPageInput): Promi
     `
       SELECT
         COUNT(*) AS total,
-        COALESCE(SUM(CASE WHEN current_record.is_low_power = '${MYSQL_BOOLEAN.TRUE}' THEN 1 ELSE 0 END), 0) AS lowPower,
+        COALESCE(SUM(CASE WHEN LOWER(TRIM(current_record.is_low_power)) = '${MYSQL_BOOLEAN.TRUE}' THEN 1 ELSE 0 END), 0) AS lowPower,
         COALESCE(SUM(CASE WHEN current_record.power_status = ${POWER_STATUS.CHARGING} THEN 1 ELSE 0 END), 0) AS charging
       FROM ls_battery_info AS current_record
       WHERE ${countWhere.whereSql}