Makita battery pack – continued

 Basically we want to end up with a modified battery pack physically the same as before but with a decent figure 8 flex running from the bottom (offset to allow clip to close) and about 2mtrs long with battery terminal size alligator clips at the end.

 

To drop the voltage down from 12 to 9.6 we can use a few diodes.

We need to loose about 2.4V (12 – 9.6 = 2.4V)

 

Voltage drop across a silicon junction is 0.7 volts so:

3 diodes = 2.1V

4 diodes = 2.8V 

 

However, we need to make some practical measurements…a full charged lead acid battery in good condition stands at 12.6V but most likely we are going to be using an old 2nd hand one with a lower terminal voltage.

ALDI: Taurus Electric Staple Gun $19.99

You need to be patient using this tool – it jams staples.

To minimise this I found I have to break off some staples from each row, about 3 or 4 mil. As with any stapler you need to press down firmly to get the staples to bed down.
Some people have had trouble obtaining staples for this unit but I had no problem at Bunnings.

GMC 24V 2 Speed Cordless Hammer $139

GTX1850K / GTX2450K
  • 2-Speed Gearbox
  • Hammer Action
  • 13mm Single Sleeve Chuck
  • Adjustable Side Handle with Rubber Grip
  • 20-Stage Clutch
  • Variable Speed and Reverse
  • 2 Battery Packs
  • Battery Indicator Displays 5 Levels of Charge
  • Extensive Rubber Over-moulding
  • 50 Piece Accessory Kit
  • Includes Kitbox

Specifications:

  • Voltage: 18 V/ 24 V
  • No Load Speed: 1250 RPM
  • Chuck Capacity: 13 mm
  • Chuck Type: Keyless
  • Torque Settings: 20
  • Batteries: 2
  • Charge Time: 3-5 Hours
  • Tool Weight: 2.1/ 2.4 kg
Purchased from Bunnings a couple of years ago for (I think) $139.00.
Great buy, heaps of grunt, hammer drill’s into brickwork easily.
With two 24V batteries you are set to go for the day.
Global Machinery Co went into receivershipin in 2008 – pity

GMC 24V 2 Speed Cordless Hammer

GTX1850K / GTX2450K
  • 2-Speed Gearbox
  • Hammer Action
  • 13mm Single Sleeve Chuck
  • Adjustable Side Handle with Rubber Grip
  • 20-Stage Clutch
  • Variable Speed and Reverse
  • 2 Battery Packs
  • Battery Indicator Displays 5 Levels of Charge
  • Extensive Rubber Over-moulding
  • 50 Piece Accessory Kit
  • Includes Kitbox

Specifications:

  • Voltage: 18 V/ 24 V
  • No Load Speed: 1250 RPM
  • Chuck Capacity: 13 mm
  • Chuck Type: Keyless
  • Torque Settings: 20
  • Batteries: 2
  • Charge Time: 3-5 Hours
  • Tool Weight: 2.1/ 2.4 kg
Purchased from Bunnings a couple of years ago for (I think) $139.00.
Great buy, heaps of grunt, hammer drill’s into brickwork easily.
With two 24V batteries you are set to go for the day.
Global Machinery Co went into receivershipin in 2008 – pity