Author Topic: Battery Not Charging  (Read 172 times)

0 Members and 1 Guest are viewing this topic.

Offline Cooky1961

  • Club Member
  • Back Lane Scratcher
  • Posts: 260
  • Age: 59
  • Location: Egremont Cumbria
Battery Not Charging
« on: October 17, 2020, 07:39:25 PM »
Hello
I posted a topic recently after losing all my lights on my 250F  but it turns out the battery has stopped charging the photo shows the output with the revs at 3000.
Have any members any advice on what I can check now?

Paul

Offline Barnett

  • Club Member
  • Port Hacker
  • Posts: 928
  • Age: 59
  • Location: Emsworth Hants Uk
Re: Battery Not Charging
« Reply #1 on: October 17, 2020, 08:16:43 PM »
my first guess would be the rectifier, do you have the manual so you can test it?
check plug connections from the generator first then its just a question of working through from the generator onwards. the manual will detail all the checks to do.
Yamaha 1974 RD125 (AS3) fully restored 2018 on road
Kawasaki 1977 z650 B1 on road
Yamaha 1972/3 U.S. early RD350 ongoing project.
usa Z1A 1974

Offline RDDave

  • Club Member
  • Port Hacker
  • Posts: 726
  • Location: Lincs
Re: Battery Not Charging
« Reply #2 on: October 17, 2020, 08:30:31 PM »
Is the battery ok, does it stay at 12.2v when you switch off ?

Offline Cooky1961

  • Club Member
  • Back Lane Scratcher
  • Posts: 260
  • Age: 59
  • Location: Egremont Cumbria
Re: Battery Not Charging
« Reply #3 on: October 17, 2020, 09:05:41 PM »
Hello
Yes when I lost my lights it was down to 5volts so plugged in the optimate and charged it and all the lights worked and the battery is giving that reading in the photo with the engine off.  It is  New gel battery.

Paul

Offline RDDave

  • Club Member
  • Port Hacker
  • Posts: 726
  • Location: Lincs
Re: Battery Not Charging
« Reply #4 on: October 17, 2020, 09:49:13 PM »
As Barnett says, check from generator onwards...  details in pages 28 - 33      https://www.aircooledrdclub.com/manuals/RD250400ESUPP.pdf

Offline stephen bailey

  • Club Member
  • Back Lane Scratcher
  • Posts: 283
  • Age: 55
  • Location: nottingham
Re: Battery Not Charging
« Reply #5 on: October 18, 2020, 07:30:09 AM »
I had exactly same issue a new rectifyer sorted problem 👍
corky

Offline RDDave

  • Club Member
  • Port Hacker
  • Posts: 726
  • Location: Lincs
Re: Battery Not Charging
« Reply #6 on: October 18, 2020, 10:17:10 AM »
Does anyone know if this one is the same size as the original, i have heard the aftermarket ones are bigger but this one does say "correct fitment and plugs". (just thinking ahead incase i ever need one)... :)

https://www.rexs-speedshop.com/product/yamaha-rd250e-rd400e-regulator-rectifier/