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Why does charger spark on pluging it to charge point on lithium bike battery sorry this is on pedal bike not. Motorbike

Sparks on intial connection but charges ok

Posted by Anonymous on


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  • Motorcycles Master
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Hi, Anonymous the spark is normal for lithium batteries for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
ElectricScooterParts com Support Center
Basic Care and Trouble Shooting of LiFePO4 bike Battery
Battery Tender Battery Frequently Asked Questions

Btw, I’m available to help over the phone in case u need at

Posted on Jul 25, 2016


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  • 2 Answers


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Posted on Jan 02, 2017



  • 101 Answers

SOURCE: bike cranks and wont start

Hi .... Sounds like regulator/rectifier is defective. Fully charge battery and try starting again, place multi-meter across battery and it should show 12.8-14 volts. If it doesn't replace reg/rec unit.

Posted on Jan 04, 2009


  • 46 Answers

SOURCE: Battery on 125cc Suzuki GS is ok- but not being charged

You need to have stator coil tested.
An alternate problem could be the regulator/rectifier.
Both of these should tbe checked by a dealer



Posted on Mar 05, 2009

Bob Peloquin

  • 43 Answers

SOURCE: battery wont charge

The most common problem is the 3-wire connector being burnt between the stator and regulator/rectifier. It has also been commonly reported that the regulator/rectifier and/or stator may need replacement.

Posted on Jun 04, 2009


Steve Allison

  • 5569 Answers

SOURCE: Bikes dead!! Battery wont charge, been charging all night Help!

You didn't mention if you charged the battery in- or out of the bike. If H-D has a modern alternator, it may have failed diodes that are draining the battery and stealing charge current if charged while connected. If the battery was made in China . . . oh, well.

Posted on Jul 03, 2009

dan noye

  • 100 Answers

SOURCE: Hi,my 1982 suzuki gs1100 is

Hi if battery is fully charged the charging system wont put in more than it needs so 12.5 volts is adequate try putting the lights on and raising the revs and checking the output at the battery if its still the same or lower then you could have a problem usual faults are with the voltage regulater rectifier breaking down if you follow the wires back from the alternater/generator should be three yellow wires to an aluminium finned block under the sidepanel check the output to this unit from the alternater and see if its the same or similar output if your only getting 12.5 volts from the alternater then your problem is with your alternater and it may need replacing but if voltage is good 13.5+
then you either have broken wires to the regulater rectifier or a faulty regulater rectifier a good swop
if a genuine regulater rectifier isnt available and the fact that they were allways a bit trashy any way is to fit one from a honda cb250 superdream as they were much easier to find and cheaper to buy second hand from a breakers yard

Posted on Feb 27, 2011

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