diff --git a/src/features/battery_deltas.R b/src/features/battery_deltas.R
index 4eeb1f48..4074995f 100644
--- a/src/features/battery_deltas.R
+++ b/src/features/battery_deltas.R
@@ -4,18 +4,27 @@ library("tidyverse")
 
 battery <- read.csv(snakemake@input[[1]])
 
-consumption <- battery %>%
+if(nrow(battery) > 0){
+  consumption <- battery %>%
     mutate(group = ifelse(lag(battery_status) != battery_status, 1, 0) %>% coalesce(0),
-            group_id = cumsum(group) + 1) %>%
+           group_id = cumsum(group) + 1) %>%
     filter(battery_status == 2 || battery_status == 3) %>%
     group_by(group_id) %>%
     summarize(battery_diff = first(battery_level) - last(battery_level),
-            time_diff = (last(timestamp) - first(timestamp)) / (1000 * 60 * 60),
-            local_start_date_time = first(local_date_time),
-            local_end_date_time = last(local_date_time),
-            local_start_date = first(local_date),
-            local_end_date = last(local_date)) %>%
+              time_diff = (last(timestamp) - first(timestamp)) / (1000 * 60 * 60),
+              local_start_date_time = first(local_date_time),
+              local_end_date_time = last(local_date_time),
+              local_start_date = first(local_date),
+              local_end_date = last(local_date)) %>%
     select(-group_id) %>%
     filter(time_diff > 0.1) # Avoids including quick cycles
+} else {
+  consumption <- data.frame(battery_diff = numeric(), 
+                            time_diff = numeric(),
+                            local_start_date_time = character(),
+                            local_end_date_time = character(),
+                            local_start_date = character(),
+                            local_end_date = character())
+}
 
 write.csv(consumption, snakemake@output[[1]], row.names = FALSE)