Building The MegaPak (Continued)

12. Now, take a look at the terminals on the SLAB battery. One is marked positive (+) while the other is marked negative (-).

The Sunca SLAB

13. Tin both the terminals.

Tinning the terminals

14. Twist the black wires together and solder them to the SLAB's negative (-) terminal.
    
    
15. Then, twist the red wires together and solder them to the SLAB's positive (+) terminal.

Soldering the wires to the SLAB terminals

16. The outer metal contact of the female RCA connectors is now negative so the only risk of causing a short circuit would be to touch the female RCA connectors to the SLAB's positive terminal. But to prevent any possibility of a short circuit, tape both terminals properly.

Taping the terminals

17. Note that I once forgot to tape a SLAB terminal properly and actually caused a mini-fire in my backpack! Apparently, the jostling caused the negative female connector to touch the SLAB's positive terminal and poof!, the wires immediately melted and started to catch fire. Fuh... luckily my friends noticed the smoke coming out from the backpack... ;)

The completed MegaPak

That's it! You have just built the MegaPak (copyright ARP 2001, etc, etc... heheh...) battery extender! But before you can use the MegaPak, you will have to make some suitable adapters to fit your portable device. You also have to build a charger for it.