diff --git a/test/battle/ability/battery.c b/test/battle/ability/battery.c
index cecfa81d0c..7ddc0b837c 100644
--- a/test/battle/ability/battery.c
+++ b/test/battle/ability/battery.c
@@ -1,5 +1,51 @@
 #include "global.h"
 #include "test/battle.h"
 
-TO_DO_BATTLE_TEST("Battery increases Sp. Attack damage of allies by ~30%"); // 5325/4096
-TO_DO_BATTLE_TEST("Battery does not increase its own Sp. Attack damage");
+DOUBLE_BATTLE_TEST("Battery increases Sp. Attack damage of allies by ~30%")
+{
+    s16 damage[2];
+
+    GIVEN {
+        PLAYER(SPECIES_CHARJABUG) { Speed(1); Ability(ABILITY_BATTERY); }
+        PLAYER(SPECIES_WOBBUFFET) { Speed(2); Moves(MOVE_SHOCK_WAVE); }
+        OPPONENT(SPECIES_WOBBUFFET) { Speed(4); Moves(MOVE_CELEBRATE, MOVE_GASTRO_ACID); }
+        OPPONENT(SPECIES_WOBBUFFET) { Speed(3); }
+    } WHEN {
+        TURN { MOVE(playerRight, MOVE_SHOCK_WAVE, target: opponentLeft); }
+        TURN { MOVE(opponentLeft, MOVE_GASTRO_ACID, target: playerLeft); MOVE(playerRight, MOVE_SHOCK_WAVE, target: opponentLeft); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_SHOCK_WAVE, playerRight);
+        HP_BAR(opponentLeft, captureDamage: &damage[0]);
+
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_GASTRO_ACID, opponentLeft);
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_SHOCK_WAVE, playerRight);
+        HP_BAR(opponentLeft, captureDamage: &damage[1]);
+    } THEN {
+        EXPECT_MUL_EQ(damage[1], UQ_4_12(1.3), damage[0]);
+    }
+
+}
+
+DOUBLE_BATTLE_TEST("Battery does not increase its own Sp. Attack damage")
+{
+    s16 damage[2];
+
+    GIVEN {
+        PLAYER(SPECIES_CHARJABUG) { Speed(1); Ability(ABILITY_BATTERY); }
+        PLAYER(SPECIES_WOBBUFFET) { Speed(2); }
+        OPPONENT(SPECIES_WOBBUFFET) { Speed(4); Moves(MOVE_CELEBRATE, MOVE_GASTRO_ACID); }
+        OPPONENT(SPECIES_WOBBUFFET) { Speed(3); }
+    } WHEN {
+        TURN { MOVE(playerLeft, MOVE_SHOCK_WAVE, target: opponentLeft); }
+        TURN { MOVE(opponentLeft, MOVE_GASTRO_ACID, target: playerLeft); MOVE(playerLeft, MOVE_SHOCK_WAVE, target: opponentLeft); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_SHOCK_WAVE, playerLeft);
+        HP_BAR(opponentLeft, captureDamage: &damage[0]);
+
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_GASTRO_ACID, opponentLeft);
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_SHOCK_WAVE, playerLeft);
+        HP_BAR(opponentLeft, captureDamage: &damage[1]);
+    } THEN {
+        EXPECT_EQ(damage[0], damage[1]);
+    }
+}