Thank you both kind Sirs

. The make shift cable worked (didnt connect green and white for now because those are data anyway).
If I use a power adapter (that I use for my Raspberry Pi) that says its DC output is 2A, that should work too right?
Leakshield uses 0.5A and the power adapter should be able to supply atleast 1A.
The reason I dont want to use the power bank now is because it turns off after a while (supply of power is not constant)
Edit :
Solved, ended up using Samsung Adaptor which had rating of 5V and 1.5A, works fine on LS.