Battery will just not hold charge!!!!

[oliverpetrie]

So I made a post a month ago about my Peugeot Speedfight 3 50cc not moving. The dilemma was that the pilot jets were too small, and not allowing enough fuel in meaning the bike wouldnt take off. This has been fixed now

However!

When we bought the bike we got it home, started it and thought that the battery had just lost its charge. We bought a new battery and thought nothing of it. Bam. The battery lost charge in a matter of hours. We took it into the "bike medic" and which he changed the rectifier/regulator and told us that the flywheel and the stator needed changing, which we did ourselves. After removing the old flywheel and stator (which the copper wires inside were split) we put the new one back in and fired it up. The charge on this lasted a couple of days, so we took the battery back and got a new one.

TL;DR
With the battery being fully charged, it has lasted about 7 days before dying, which is quite strange. We have replaced everything with new parts on the battery end (new battery, new rectifier/regulator, new flywheel and a new stator) but we can't just figure out what it could be! Any helpful tips and suggestions are welcome as I should have been out on the road a while back but the battery dilemma has prevented me from being out

Many thanks, Oliver

[Nobby the Bastard]

[CaNsA]

[Rogerborg]

All this time and money you've put in, did it include 5 minutes with a £5 multimeter?

What are your battery voltage readings cold, and with the engine idling, and revving?
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[oliverpetrie]

[oliverpetrie]

[stinkwheel]

[Howling TerrorOutOfOffice]

Ask your Dad how many volts it was when revved.
Not saying your Dad isn't cool but some electricians can be right nobby-knowalls.
____________________
Diabolical homemade music Bandcamp and Soundcloud
Singer songwriter, Artist and allround good bloke Listen to Andrew Susan Johnston here
The Harry Turner Project

[Undinist]

[oliverpetrie]

[quote="Undinist"]

[oliverpetrie]

[oliverpetrie]

[Carvel]

[oliverpetrie]

[smallfrowne]

Well, have you checked the AC output of the stator? You can do that with the stator unplugged, bike running. Do any connections look all melty or coroded? I had a bike whos stator connections felt very warm due to the corrosion of the pins, and that bike was very poorly electrical wise, it didn't charge and ate its rectifiers for brekky.

If it's only showing 11-12V with a few revs on then it isn't charging, needs to be up nearer 13.5-14V.
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'90 VFR750; '89 NC30; '95 DR650; '89 CD250U; ~'82 CG125; ~C90

[iooi]

[oliverpetrie]

[Nobby the Bastard]

[andys675]

cheap chinky battery? not conditioned
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Some people feel the rain, others just get wet.

[talkToTheHat]

There's not a cheap and nasty alarm on the bike is there?
____________________
Bandit. does. everything.

[Andy_Pagin]

[iooi]

[oliverpetrie]

Okay so I went into my shed and measured the voltages and whatnot, and it read;

Battery without bike on - 12.5v
Battery with bike on (engine not on) - 11.8v
Battery with bike on (engine on) - 11.6-11.8v
Battery with bike on (engine on and revving) -11.8-11.9v

From reading this thread I know there is something up as my measurements do not match everyone elses. I tried the old Rectifier/Regulator and there were no changes in these voltages.

[iooi]

So either the Rectifier/Regulator is fucked or you have wired it up wrong when changing the charging system.
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Just because my bike was A DIVVY, does not mean i am......

[oliverpetrie]