Mountain bike
*Vultures Knob>>>Bike Lights

Does anyone else have so much problems with thier batteries?



I bought a automatic trickle charger for my battery and i let the battery charge full. I rode the bike three times over about a week in a half and each time i rode maybe about 25 mikles each trip. Yesterday i rode the bike maybe about ten miles and i saw the gs light on so i stopped for gas. And when i tried to restart the bike it was dead. Now is this the normal?
Shouldnt you ayt least a month out of a full charge battery. Some please shed some light. thx

check the battery terminals...especially the hot wire for corrosion. it'll almost have a greenish tint to it. is best to have the terminals clean of this. its a juice robber for sure and can make bikes very hard to start, or not at all.
your stator is probably bad
check and clean all connections, chk
the acid level, top off w/ acid..not water. Charge and take to shop to, have it LOAD- tested. depending on testor they can check for other things at same time, this will tell you whats wrong. they should do this for free, cause they want to sell parts. Dont trust your shop, some auto parts stores offer the same, for the same reason
i had the same problem but it was my spark plugs. i had a tune up done to my CBR and put new plugs in it. and my battery kept dying they didnt know what was wrong with it and the shop had it for like a month, and turns out they put spark plugs in it that were too big for it and they were pulling all the battery power and draining it. so before you go and change your starter and stuff like that look at the little things too
A fully charged lead-acid battery should last 5 years.
A motorcycle Battery sits around alot and that is hard on them. Yes We all have battery problems with our bikes.

Also you could have a mechanical gremlin working
A. Your bikes alternator is not working correctly or working only sometimes (and in the process of going bad)
OR
B. You have installed some accessories lately that have increased the power draw beyond what your bikes's alternator in it's current output level can sustain. IE you have some lights that draw 50 amps, and your alternator is rated at 35 amps. (look in your manual and see what your alt. is rated)

Questions for A:
1. Check your ground wires. are they tight? clean with no corrosion? are they broken right at the connector??(wiggle and gently pull on them) is the wire's insulation cracked or worn through? while your on the grounds just take each on loose from the frame and clean it clean the frame , tighten gently
2. check your battery cables to see if they are tight at the battery. Are they clean? clean them anyway.
3. check cable at starter. no corrosion and tight?
4. time to check the alternator. Crank bike, unplug positve battery cable, does it still run? (not for bikes with computer)
your bike has separate coils for the motor and the lights. So it could POTENTIALLY run and still not charge the lights. SOOOO with it running and the cable undone do the lights go out? (you'll haveta rev the bike to mid range, the alt doesn't put out it's highest at idle)

Question for b:
1. Did you change your headlight lately? they have different power requirements. You haveta get on that matches your factory installed one. (amp rating)
2. Aftermarket or new lights ?

Anything past these questions and you'll need some tools to measure voltage.

Motorcycle batteries are very small and as such they have very little reserve capacity. If you leave you key on for 30 minutes while you fill up your battery will be dead.
AND most motorcycles the headlights stay on while you turn the starter over. both high load situations.
I think its time to buy a new battery. I mean if your charging it for more then 5 hours and it still dies, the cells in your battery are over used and probably dead. Either that or you have a electrical problem on your bike causing it to drain the battery.
basic knowledge of battery cells
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