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--- student_documentation:battery [2023/03/23 14:42] – Beni Ammann
+++ student_documentation:battery [2024/02/16 07:44] (current) – [Basic Installation Instructions] Melle de Wit
@@ Line 1: / Line 1: @@
 ====== OBC Battery ======
-<color #ed1c24>**Important:** please don't allow a __deep discharge__ of the battery. That means use of a battery until it runs completely out of power. The battery level indicator would then be just grey with no black squares visible. The current battery holder/charger is not able to charge deeply depleted batteries. Completely drained batteries must be brought to the telemetry team for an exchange. Please prevent this by doing regular charges and make sure there is at least 1 bar on the battery level indicator</color>
+<color #ed1c24>**Important:** please don't allow a __deep discharge__ of the battery. That means use of a battery until it runs completely out of power. The battery level indicator would then be just grey with no black squares visible. The current battery holder/charger is not able to charge deeply depleted batteries. Completely drained batteries must be brought to the telemetry team for an exchange. Please prevent this by doing regular charges and make sure there is always at least 1 bar on the battery level indicator. To go on track the battery must be charged to at least 3 bars.</color>
@@ Line 9: / Line 9: @@
 The purpose of the battery is to supply clean and stable power to the OBC.
 The battery consists of 4 Li-Ion cells in series. The battery contains battery management system (BMS) functions to protect the cells form overcharge, overdischarge and short circuits.
-The OBC battery, battery holder, and a 50W charger is part of the telemetry kit provided by the technical team. However, it is the (race-)teams responsability to always keeping their battery well charged. Avoid going out on track with less than 60% charge (less than 3 bars).  To charge the battery, have it installed in the holder and connect the charger barrel connector to the battery holder.
+The OBC battery, battery holder, and a 50W charger is part of the telemetry kit provided by the technical team. However, it is your Team's responsibility to always keep the battery well charged. Avoid going out on track with less than 60% charge (less than 3 bars).  To charge the battery, have it installed in the holder and connect the charger barrel connector to the battery holder.
+==== 3D model ====
+{{url>https://cdn.sem-app.com/stl/BatHolderMockup.html 640,400 noscroll noborder}}
+[[https://cdn.sem-app.com/stl/BatHolderMockup.stl|Download as STL file]]
+[[https://cdn.sem-app.com/stl/BatHolderMockup.step|Download as STEP file]]
+{{ :student_documentation:battry_holder_dimensions.png?400 |}}
 ==== Characteristics ====
 ^Nominal voltage|14.4 VDC|
-^Capacity (OBC run-time)|3,250 mAh (Three hours - min)|
+^Capacity (OBC run-time)|3,250 mAh (Three-Four hours - min, depending on energy type)|
-^Recharge time (with supplied 50W charger|Two hours (max)|
+^Recharge time (with supplied 50W charger|Four hours (max), depending on charge level|
 ==== Basic Installation Instructions ====
-The battery holder must be securely mounted in close proximity to the Backbone in the vehicle engine compartment.  Mount the battery holder such that the battery is protected from mechanical damage, excessive heat and water and both the battery and battery holder can be easily removed and replaced.
+The battery holder must be securely mounted in close proximity to the Backbone in the vehicle engine compartment.  Mount the battery holder such that the battery is protected from mechanical damage, excessive heat, and water, and both the battery and battery holder can be easily removed and replaced.
@@ Line 33: / Line 42: @@
   - Battery needs to be charged before every run.
   - Allow for at least **60%** before entering the race. That's **3 bars out of 5**
-  - Charging time: approximately **3 hours** if battery is completely drained.
+  - Charging time: approximately **4 hours** (depending on energy type) if battery is completely drained.
-  - System run time with a full battery: around **5 hours**. Cold temperatures will reduce usable battery capacity.
+  - System run time with a full battery: around **4-5 hours**. Cold temperatures will reduce usable battery capacity.
   - Turn off your OBC system when not on track
@@ Line 42: / Line 51: @@
   - Remove the battery and holder from the vehicle for charging
   - Never leave the battery unattended while charging
-  - Overnight charging is prohibited (unattended battery)
+  - Overnight charging is prohibited (No unattended battery charging)
-  - Keep away the charging battery from enflammable material
+  - Keep away the charging battery from inflammable material
   - Charge the battery under a fire blanket or in a Li-Ion Bag if available
   - Never expose the battery to mechanical stress, excessive heat or moisture

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