Apply pressure to the outside ring so it is flush with the front of the tube.
Don't let this sit in this position to dry or it will become stuck to the paper towel.
If any glue got on the inside of the tube, wipe it off.

Edit

Step 19

Edit

Step 20

Edit

Step 21 Battery Tube Back

Edit

Step 22

Cut the lengths of wire into:
- (2x) 20cm
- (2x) 50cm

Edit

Step 23

Strip the 20cm piece on one end.

Edit

Step 24

Edit

Step 25

Edit

Step 26

Edit

Step 27

Edit

Step 28

Edit

Step 29

Edit

Step 30

Edit

Step 31

Edit

Step 32

Edit

Step 33

Edit

Step 34

Edit

Step 35

Edit

Step 36

Edit

Step 37

Edit

Step 38

Edit

Step 39

Do your best to make these parts concentric.

Edit

Step 40

Edit

Step 41

Do your best to make these parts concentric.

Edit

Step 42

Make sure the wire goes through the bigger of the two holes.

Edit

Step 43

Edit

Step 44

Edit

Step 45

Edit

Step 46

Edit

Step 47

Edit

Step 48

Edit

Step 49

If the battery tube is a little tight you can sand the inside corner to debur the edge.

Edit

Step 50

Make sure cement is the entire way around.

Edit

Step 51

Edit

Step 52

Edit

Step 53 Battery Tube Front

Edit

Step 54

Edit

Step 55

Edit

Step 56

Edit

Step 57

Edit

Step 58

Edit

Step 59

Edit

Step 60

Edit

Step 61

Edit

Step 62

Edit

Step 63

Edit

Step 64

Edit

Step 65 Battery Tube Epoxy

Edit

Step 66

Use epoxy to fill the end of the battery tube.
When working with epoxy it is recommended that you wear gloves, safety glasses, and work in a ventilated area.

Edit

Step 67

The epoxy will flow through the entire cavity.

Edit

Step 68

Fill until it comes out of the hole with the wires.

Edit

Step 69

Edit

Step 70

The epoxy will settle after a while and the level in the hole will go down. Check back after 30 minutes and fill with more epoxy in this hole.

Edit

Step 71

Let the epoxy set for a few hours.

Edit

Step 72 Front Battery Tube Endcap Epoxy

Edit

Step 73

Edit

Step 74

Fill until epoxy comes out this end.

Edit

Step 75

Edit

Step 76

Edit

Step 77

Edit

Step 78

Let the epoxy set for a few hours.

Edit

Step 79 Attaching Battery Tubes

Edit

Step 80

If you have an OpenROV v2.6 you will not have the straps holding your batteries to the side of the frame.

Edit

Step 81

Edit

Step 82

If you have an OpenROV v2.6 remove the zip-ties that are holding the battery tubes to the side of the frame.

Edit

Step 83

Edit

Step 84

Edit

Step 85

Edit

Step 86

Edit

Step 87

Notice that these are mirror images of each other.

Edit

Step 88

Edit

Step 89

Edit

Step 90

Edit

Step 91

Edit

Step 92

Cut to a length of 3cm from the back of the battery tube.
If you have an OpenROV version 2.6 you will need to mark the positive and negative wires to keep them matched.
- The wire that goes to the front of the tube is positive.
- The wire that goes to the back of the tube is negative.