All Tdi's Are Not Equal
Having bought both The TDI SL and then the TDI Pro it was only matter of time before I started comparing one against the other and what I found was quite disturbing, With the SL you get a nice light weight package and on the surface it's only down fall appears to the limited power supply and after a short time I managed to increase the burn time by just over an extra 50%,
With the TDI Pro word soon got around that if a person was to turn the Ground Balance off then the depth would be great
Steve regarding the power supply I tried it with the standard HD 2200 mah pack @ 11.6 volts then I tried the 8 cell dry pack @ 13.04 volt and the best results were using the 8 energizer lithium batteries that gave me 14.64 volts, It ran for well over 10 hours and made the signals a little sharper but because of that smoothing effect it is almost impossible to measure any depth increase without having to do that overload trick, So the higher voltage does have an effect but not enough to stand ou