Moped charging circuit

[Dave]

I'm trying to help my son fix his moped from his telephoned information that
"The battery runs down in a few hours". Basically I know nothing about moped
circuitry and there seems precious little help on the web about this. I can't
even locate a workshop/service manual for the machine (A '92 Yamamha Slider).
Anyone have a circuit diagram/description/any information about this kind of
moped? I don't even know what the battery voltage is - I guess 6V lead acid(?).
I'm planning a visit next week so would very much like to take kit to try and
help him. I can measure the current drain in case something is taking current
with the igition off - but I think it may be the charging circuit that's at
fault. Is this similar to a car - alternator, rgulator module, battery?
Your help much appreciated.
-Thanks

 

[Mark Fergerson]

Dave wrote:

I'm trying to help my son fix his moped from his telephoned information that
"The battery runs down in a few hours". Basically I know nothing about moped
circuitry and there seems precious little help on the web about this. I can't
even locate a workshop/service manual for the machine (A '92 Yamamha Slider).
Anyone have a circuit diagram/description/any information about this kind of
moped? I don't even know what the battery voltage is - I guess 6V lead acid(?).
I'm planning a visit next week so would very much like to take kit to try and
help him. I can measure the current drain in case something is taking current
with the igition off - but I think it may be the charging circuit that's at
fault. Is this similar to a car - alternator, rgulator module, battery?

I don't know diddly about mopeds either, but a
conservative guess is that it uses a system more similar to
a motorcycle than a car.

I'd also guess that the battery, being that old, just
needs replacing.

Mark L. Fergerson

 

[nihoa]

"Dave" <dave@at.one> wrote in message
news:so1h70digv7c797spp7vho5p1v3ns454ve@4ax.com...

I'm trying to help my son fix his moped from his telephoned information
that
"The battery runs down in a few hours". Basically I know nothing about
moped
circuitry and there seems precious little help on the web about this. I
can't
even locate a workshop/service manual for the machine (A '92 Yamamha
Slider).
Anyone have a circuit diagram/description/any information about this kind
of
moped? I don't even know what the battery voltage is - I guess 6V lead
acid(?).
I'm planning a visit next week so would very much like to take kit to try
and
help him. I can measure the current drain in case something is taking
current
with the igition off - but I think it may be the charging circuit that's
at
fault. Is this similar to a car - alternator, rgulator module, battery?
Your help much appreciated.
-Thanks

I just searched for MOPED SERVICE using Google and it listed a a bunch of
service shops. I'm sure one of them could help you with your problem. If
the battery has never been replaced since 1992, then the most likely cause
is the battery, or batteries. Most electrical mopeds run on 24 volts (two
12v batteries in series).

Nihoa