LCGB Forums

Recently bought an LD 150 avv. working when I got it, but 2 things have now happened.

1) Ignition key stopped working, but I think I've sorted that now - basically condensation
2) One of the 2 6V batteries is dead

So, does anyone know what the batteries are for the LD 150 avv Mk3? Or what substitute(s) work.?

Thanks

Siobhan

I don't have an AVV myself so I can't point you directly to the exactly right battery. Here are a few that are listed with dimensions:

https://www.riminilambrettacentre.com/e ... larga.html

(should be able to find this a local scooter/motorcycle shop using the Yusa number shown. dimensions 122mm x 62mm x 131mm)

https://www.riminilambrettacentre.com/e ... tv175.html

https://www.riminilambrettacentre.com/e ... tv175.html

So rather than put two 6v batteries into my LDAVV I would like to put a single 12v. Does anyone know what the Ah rating needs to be please? Bolti

The machine is designed to run a 6Volt electrical system. 2 x 6V batteries does not give you 12V - think of it, rather as giving greater resilience of the 6V supply (the cold cranking power).
You may find a single, modern battery with greater cold-cranking output than yours but check the power output of the individual 6V batteries you have and that is the number to multiply by 2, to determine the required battery power output.
If you want to convert to a 12V system, then that is an entirely different matter. I am just completing a rebuild of my 150 Ld b MkIII with the Ducati Stratos 12V magneto conversion kit for Lambrettas, which has a six coil stator and electronic ignition.
If you were to go down that route for an avv machine, you would still need to know the required cranking power for the self starter but then source the a 12V battery / batteries with that power output.

. . . . Not forgetting that you would then also need to change your starter motor to a 12 V unit!

Back in the day, I converted quite a few 6v Volkswagens to 12v. You can run a 6v starter with 12v as the operating time is limited. It actually works very well indeed.