motorcycle battery only charges when i rev the engine very high and doesnt charge while normal riding...?

Question

my battery wasnt charging in my motorcycle then i replaced the battery 3 days ago and it ran fine untill now.. my new battery died today and my mechanic said it might be the rectifier/regulator gone bad... it wasnt charging the battery.... i havent replaced the rectifier yet but now it charges the battery only when i rev the engine really high but it doesnt charge during normal riding... what could it be? any help????

Answer 1

replace your stator it's not puting out power at low rpm.Ief you email me later I'll find the ebay site to purchase high output stators for 1/3 the price of oem.

Answer 2

First off, don't automatically take the advice of the people who emphatically state "It's the reg-rec" or "It's the stator" because it could be either or even neither.



First, how do you know it charges only at high rpms? Have you checked the voltage? If this truly is the case and mid-range rpms won't keep up, first make sure you aren't overloading the charging system with extra lights or heated clothing.



If there acatually is something wrong with the charging system, spend $25 for a shop manual and $5 for a multimeter and find out what the problem is before you go spending hundreds of dollars for parts you may not need. If not that, at least take it to a reputable mechanic who will be able to figure out very quickly (15 minutes) is the stator or reg-rec is faulty.

Answer 3

Most charging systems consist of a multiphase (usually 3) alternator, rectifiers and regulator.



The most common culprit is a poor connection in the wiring.



Older bikes suffer from worn insulation on wiring, which can result in a short, this can then take out the regulator, rectifier or alternator.



Charging at only high revs suggests that you may have lost one phase, either in the alternator or rectifier or have a faulty regulator.



Don't change anything until you have done some proper diagnostics.



Even then, make sure you check your wiring loom for damaged insulation or you could be heading for the same trouble again.

Answer 4

The charging system on most modern bikes consists of a "Y" wound three phase stator winding and a solid state regulator/rectifier unit. It could be that you have a partial short in your stator winding OR perhaps have lost one or more diodes in the rectifier, thus, giving you less than full charge. As one of your other answers said you will no doubt have to replace something to fix this. Both stator and reg/rectifier unit can be accurately tested by a knowledgable mechanic very quickly, so, if you bring it to a shop for diagnosis it should not be too expensive labor wise.

Answer 5

If the headlights brighten once you speed up the engine, then that's no longer the alternator (which is composed of the stator) or the regulator-rectifier. I guess that's the battery. The battery serves 2 applications, one is to keep potential jointly as the device isn't being utilized so as that when you hit the starter button, potential is attainable to crank the engine over. the different is to offer potential to the lights (and horn) and ignition equipment while the engine isn't turning rapid adequate for the alternator to offer the potential mandatory to maintain the motorbike working. once you're shifting down the line at a incredible clip, the charging equipment is offering the potential mandatory to maintain you going. once you're putting around city or stopped at a give up sign, the battery could supply the potential mandatory. circulate to the community vehicle aspects keep and spend a pair of greenbacks for somewhat floating ball hydrometer. do away with the battery caps and with the little hose linked, suck up countless the electrolyte (water interior the battery) into the hydrometer and spot what number balls are floating. The quantity floating will supply a demonstration of each and every cellular's state of fee. warning! Electrolyte will consume holes on your clothing and burn your epidermis. which skill do no longer placed on the greater healthful you're making plans on getting married in and placed on eyeglasses or goggles. while a reliable battery is administered down, all cells will tutor a similar state of discharge. while a battery is going undesirable, seldom do all cells peter out on a similar time. maximum many times you will discover 4-5 reliable cells and a million-2 undesirable cells or 2 reliable, 2 so-so and 2 undesirable. while a battery's cells are flippantly discharged, it extremely is many times a demonstration of charging issues. simply by fact your lights enliven, your equipment is charging however the addition of employing lights, a important headlight bulb of greater wattage, heated clothing, smaller than unique battery or an inordinate volume of idling or very sluggish using can drain an in any different case reliable battery.

Answer 6

Yeah, if you replaced with new battery, and it's dead again, that means that the charging system is bad. Kaput!! Whether it's the "rectifier/regulator" or alternator, it needs fixing. You'll NEVER have a safe battery with that or those items broken.

Had to replace alternator on my car. Batty kept being low. Was driving from Iowa to NM, and charging system kept coming on occasionally, saying it wasn't working properly. Got stuck in small town in pouring rain, messed with wires, got it working again. Stuck in KC, replaced with new batty, but 4 hrs later, batty was almost dead. Had been driving on only the batty. Replaced alternator, and car has been strong since.



So, yes, spend the $$ to fix the rectifier or whatever charges your bike up. You'll never had trouble again.



Safe riding!!

Answer 7

before you go out and buy a new rec make sure that all connections are tight you might have a bad connection to rec. if you work on your own bike allways look at part on your bike closely you can not get your money back on electric parts so make sure all is pluged in before you go out and spend cash on stuff you might not need