Something you may not be aware of:

5v3d3b0 · World Chat Champion Joined: 24 Sep 2006 Karma :

Bear with me for a moment. This isn't about my bike, but read on.
I've been having some trouble with my bike, the first being a dead battery, the second that the bike didn't have as much power as it used to. At the top of the rev range where I used to have max power, there was just weakness.
About 2 hours ago I changed the battery for a brand new one.
Bike stared easily obviously, and when I got out of the garage, the bike felt smoother for some reason. Curious, I let it warm up, and took it all the way up the revs.
PERFECT.
Good as new, the revs were right up there kicking ass!

So, were you aware that the battery can actually affect the performance of your bike?
I'm guessing that it must be because of the spark plug not getting enough power to fire properly that many times per second?

Expert opinions please. I'm just SO happy, cause I thought my engine was failing Very Happy

NSR Mick · World Chat Champion Joined: 26 Jun 2005 Karma :

Yes a flat battery can affect performance.
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If you dont like the way that I ride.......Stop trying to keep up!!!

LeeR · World Chat Champion Joined: 12 Dec 2006 Karma :

Now that's very helpful, I know for a fact my battery is on the way out as the alarm gives an extra squawk when I turn it on of an evening. I've been putting the bike on charge over-night and in the morning it runs fine. Come evening after a day parked at work with the alarm on, and having used heated grips for 40-45mins each way the bike feels a bit sluggish. It may be time to change the battery, cheers. Thumbs Up

EDIT: What make did you buy, how much, and where from?
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My claim to fame: Austin Vince nicked my pen...

5v3d3b0 · World Chat Champion Joined: 24 Sep 2006 Karma :

I bought a Yuasa YB9-B battery, which is the same as was in the bike from the beginning.
It costed me 20 quid, I live in Spain, so maybe price varies slightly.
Was a bit scary having to transport the sulphuric acid in the inside pocket of my jacket as I had no space elsewhere Shocked

Bike is a 2005 Rs 125 just incase anyone is wondering

Walloper · Super Spammer Joined: 24 Feb 2005 Karma :

Dilithium Crystal would be drained.
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W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

Blau Zedong · Banned Joined: 26 Jun 2006 Karma :

5v3d3b0 · World Chat Champion Joined: 24 Sep 2006 Karma :

Good point. I wrote the topic post in my girlfriend's house, and just got back. Oh. My. God.
Perfect air and now with more power than I'm used to.
Wheelie machine. Period

5v3d3b0 · World Chat Champion Joined: 24 Sep 2006 Karma :

I just remembered this topic and I'm thinking could this be the problem with my bike now? Refer to the topic in the workshop