diff --git a/src/data.rs b/src/data.rs
index 43a576b..9da3990 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -10,7 +10,7 @@ pub struct Data {
 
 #[derive(Serialize, Deserialize, Archive)]
 pub struct DataChunk {
-    pub timestamp: i32,
+    pub timestamp: u64,
     pub battery: BatteryMutable,
 }
 
diff --git a/src/main.rs b/src/main.rs
index cd235f2..d916a7f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,14 +1,45 @@
-use std::{thread::sleep, time::Duration};
+use std::{
+    error::Error,
+    fs,
+    io::Read,
+    thread::sleep,
+    time::{Duration, SystemTime},
+};
+
+use rkyv::api::low::deserialize;
+
+use crate::data::{Data, DataChunk};
 
 mod battery;
 mod data;
 
-fn main() {
+fn main() -> Result<(), Box<dyn Error>> {
     let mut battery = battery::Battery::new().unwrap();
+    battery.update().unwrap();
+    let battery_file = fs::OpenOptions::new()
+        .read(true)
+        .write(true)
+        .open("./battery.data");
+
+    let mut data: Data;
+
+    let mut meow = battery_file?;
+    let mut buf: Vec<u8> = Vec::new();
+    meow.read_to_end(&mut buf)?;
+
     loop {
         battery.update().unwrap();
-        println!("{:?}", battery);
-        println!("{:?}", battery.percentage());
+        let timestamp: u64 = SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_secs();
+
+        let batt_data = battery.as_data();
+        let new_chunk = DataChunk {
+            battery: batt_data.1,
+            timestamp,
+        };
+
         sleep(Duration::from_secs(3));
     }
 }