alternator amps
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Member
2009 MP3 Piaggo 400
Joined: 30 Dec 2018
Posts: 7
Location: SC
Sun Dec 30, 2018 4:21 pm quote
What is the alternator amps for the Mp3 Piaggo 400?
Member
2009 MP3 Piaggo 400
Joined: 30 Dec 2018
Posts: 7
Location: SC
Sun Dec 30, 2018 4:25 pm quote
Re: alternator amps
ledenfield wrote:
What are the alternator amps for the Mp3 Piaggo 400?
Molto Verboso
Kymco AK550
Joined: 09 Feb 2008
Posts: 1071
Location: UK
Mon Dec 31, 2018 12:44 am quote
The workshop manual is available for download ( see wiki section of the forum). That says that if a good battery is allowed to discharge to 12 volts and the engine is then revved to 5000 rpm a current of greater than 20 amps should be possible. More importantly if you do not have an inductive type of ammeter the voltage under normal charging conditions should be around 14.5 volts. You do need to know that the battery is good because a bad battery can give all kinds of strange readings.
Veni, Vidi, Posti
2008 MP3 500, 2013 BV350
Joined: 13 Oct 2012
Posts: 6770
Location: Ashburn, Va. Home to the Internet
Mon Dec 31, 2018 3:42 am quote
Not a lot extra, I ran a electric jacket and it was fine as long as I wasn't in stop and go traffic all the time.
Enthusiast
mp3 500 2016
Joined: 30 Dec 2011
Posts: 59
Location: singapore
Tue Jan 01, 2019 6:22 pm quote
The normal charging voltage is ard 14.6v.there was a time i forgot to off the bike for like 5 hrs.the next day,she was able to start up just fine but the charging voltage while on the move was showing only 12 plus vollt.
After running for quite a while on the next day,the voltage was able to return to normal by the following day.
Hooked
MP3 500 LT " Matilda"
Joined: 21 Dec 2018
Posts: 137
Location: west Germany
Sun Feb 10, 2019 11:51 am quote
Alternator amps
The amps should be at least about 20 to 25 if I'm not mistaken.
Ossessionato
2016 MP3/500 Sport ABS, 2009 MP3/250, 2012 GTS Super 300ie
Joined: 08 Jul 2011
Posts: 4187
Location: Marietta, GA
Mon Feb 18, 2019 11:51 am quote
I have learned the hard way...

I purchased the Expensive Earth-X 36 Amp Battery.
Worked great for 2 winters, plenty power to spare when running heated gear even though the charging system could not keep up with the load.
The MP3/250 is terrible, the MP3/500 is much better but both lack the ability to support Pants, Jacket, Gloves that are heated... (I use Tourmaster.)
The battery would eventually recharge going at faster speeds.

Then when it died...
The Warranty, and adjustment of the price for replacement, it was just not worth it. I purchased 1 for each of my bikes, they all went out in 2 years or less.

For the past 2 years, I keep a standard Motobatt battery installed.
Then when I plan on using heated gear, I plug in a second Motobatt battery to double the amperage with a "Y Cable" I made. Works like a champ...

The Spare battery... only used in the Winter, comes in handy if your Primary Fails. Just install that one, buy another Motobatt...

So its a cheap way to go from 14 Amps to 28 Amps...

Keith,
Marietta, GA
Ossessionato
2016 MP3/500 Sport ABS, 2009 MP3/250, 2012 GTS Super 300ie
Joined: 08 Jul 2011
Posts: 4187
Location: Marietta, GA
Mon Feb 18, 2019 11:53 am quote
WEB-Tech wrote:
Not a lot extra, I ran a electric jacket and it was fine as long as I wasn't in stop and go traffic all the time.
Very True...
I think the 250 has 5 Amps Extra, and the 400/500 has 10 Amps Extra.

But, if you did the Mod on your Headlights to run both at the same time.
Well, you don't have anything extra.

Keith,
Marietta, GA
Hooked
Piaggio MP3 500
Joined: 21 Nov 2017
Posts: 171
Location: Austin, TX
Tue Feb 19, 2019 8:42 am quote
If you convert to LED headlights, then you get 5 amps back (per pair). Converting to all LED lights may get you another couple.
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