Project 25: 12 V Battery Pack.

2024-03-23

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Objective:

To build a 12 V Battery Pack with 43 Ahr capacity. Max. charge voltage is about 13.1 V, and recharge at 11.8 to 12.0 V.

Structure:

• 4.25 in. High
• 12.5 in. Long
• 8.75 in. Wide
• 30 lbs Mass
• 43 Ahr Capacity

Materials:

1. 6X ML7-12 - 12 Volt 7.2 AH SLA Battery. Cost $105 Pack of 6.
2. Southwire 55667323 Primary Wire, 18-Gauge Bulk Spool, 100-Feet, Black. Cost $11.65 ea.
3. Southwire 55667323 Primary Wire, 18-Gauge Bulk Spool, 100-Feet, Red. Cost $11.65 ea.
4. HKS 150PCS Nylon Female Spade Quick Disconnect Connector - Blue 16-14 AWG Electrical Wire Connectors Kit, Cost $9.
5. 1/4 in. Plywood. Cost $10 USD.
6. Red and Black banana connectors. Cost $5 USD.

Total cost of all materials used $153 USD.

Tools:

1. Makita 7 1/4 Circular Saw 5007F, est. cost $140
2. Makita Orbiting Sander 5.0" VSP, est. cost $129
3. Makita Pneumatic 2 in. 18-Gauge Brad Nailer AF506. Cost $113
4. 3/8 Drill (6408), corded, est. cost $81
5. Ratcheting Crimper, Klein Tools 10-22AWG. cost $30
6. Black Oxide Drill bit Set (29-Piece). est. cost $27
7. Aluminum Speed Square, est. cost $8
8. 25' Tape Measure, est. cost $10
9. 18" Stiff Ruler, est. cost $8
10. Screw Driver Interchangeable Set, est. cost $7
11. 2" Putty Knife, est. cost $7.97
12. Safety Knife, est. cost $6.98
13. Hammer, Straight Claw, cost $10
14. Paint Brush, cost $8

Total cost of all tools if all bought new for project is approximately $586 USD.

Procedure

1. Cut 1/4 plywood pieces.

2. Glue and nail box.

3. Add battery separators.

4. Install batteries.

5. Using racheting crimping install wires

6. Solder banana connectors.