diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/capability/EnergyStorageImpl.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/capability/EnergyStorageImpl.kt
index f7d19ca9c..d863cc37c 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/capability/EnergyStorageImpl.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/capability/EnergyStorageImpl.kt
@@ -74,7 +74,7 @@ sealed class ItemEnergyStorageImpl(
 	}
 
 	override fun extractEnergyInner(howMuch: ImpreciseFraction, simulate: Boolean): ImpreciseFraction {
-		if (!howMuch.isPositive)
+		if (!howMuch.isPositive || itemStack.count != 1)
 			return ImpreciseFraction.ZERO
 
 		@Suppress("NAME_SHADOWING")
@@ -101,7 +101,7 @@ sealed class ItemEnergyStorageImpl(
 	}
 
 	override fun receiveEnergyInner(howMuch: ImpreciseFraction, simulate: Boolean): ImpreciseFraction {
-		if (!howMuch.isPositive)
+		if (!howMuch.isPositive || itemStack.count != 1)
 			return ImpreciseFraction.ZERO
 
 		@Suppress("NAME_SHADOWING")