skipperT Posted October 22, 2021 Share Posted October 22, 2021 (edited) 14 hours ago, howie333 said: update: put some loads on; caused battery to die. battery sat fully charged since last night. put battery on charge since, and has been charging for quite a while now. guessing it was defective battery. I did test output voltage on stator @ 20V A/C on all combinations. 14V d/c stator output worried me it may be low. It should have been slightly higher considering some small loads I use. I'll bring battery to a local auto store to put load across battery to know for sure. Where the best place to buy new battery ? local or internet store ? TNX. Howie 20 V -AC is LOW for a stator output. was that measured at 5k RPM? DC measurements from a stator are irrelevant. cheap batteries leave you stranded, IMHO. You get what you pay for… (many people here will disagree with that statement). Do what you will. .2-.5ohms of resistance is fine. This test doesn’t have to be spot-on resistance wise, it’s simply to see if the windings are intact. the short-to-ground test measurement on each stator wire to battery ground should be infinity/or OL depending on your VOM. The test is very important! If your stator output tests are perfect and high but you have a short to ground, then your charging won’t be adequate. ground wires should always be verified to be tight and clean as well. the FJ/MT have a smaller ground connector that needs to be connected just down from the battery negative connection I’m adding these notes here for anyone who comes across this thread down the road. Howie’s testing was incomplete. However a battery replacement is still a wise call at this point. Let us know how you make out, -Skip Edited October 22, 2021 by skipperT 1 Link to comment Share on other sites More sharing options...
howie333 Posted October 22, 2021 Author Share Posted October 22, 2021 1 hour ago, skipperT said: 20 V -AC is LOW for a stator output. was that measured at 5k RPM? DC measurements from a stator are irrelevant. cheap batteries leave you stranded, IMHO. You get what you pay for… (many people here will disagree with that statement). Do what you will. .2-.5ohms of resistance is fine. This test doesn’t have to be spot-on resistance wise, it’s simply to see if the windings are intact. the short-to-ground test measurement on each stator wire to battery ground should be infinity/or OL depending on your VOM. The test is very important! If your stator output tests are perfect and high but you have a short to ground, then your charging won’t be adequate. ground wires should always be verified to be tight and clean as well. the FJ/MT have a smaller ground connector that needs to be connected just down from the battery negative connection I’m adding these notes here for anyone who comes across this thread down the road. Howie’s testing was incomplete. However a battery replacement is still a wise call at this point. Let us know how you make out, -Skip Thanks for reply. i'll do a load test on battery 1st, Battery plus has the Xtreme AGM powersport battery for just under $80, Not sure, but I may go with larger battery. i didnt test A/C output @ 5K rpm's, but will do and get back to you. The grounds are tight and good shape @ different locations, and no shorts to GND. Thank you ! 1 Link to comment Share on other sites More sharing options...
howie333 Posted October 22, 2021 Author Share Posted October 22, 2021 6 hours ago, peteinpa said: https://www.batterystuff.com/powersports-batteries/sYTZ10S.html I've been using these for many years. Quick delivery and great life. Just fully charge before first start. I'll be putting this one in when the time comes. Remove foam and a perfect fit. https://www.batterystuff.com/powersports-batteries/sYTZ14S.html Larger with more CCA. Batterystuff only warrantees batteries listed for that bike. The YTZ14S is not covered. I would have to buy stock size and CCA; or take a chance on it; buy a( motocross) brand(same CCA) or a lithium type. Link to comment Share on other sites More sharing options...
peteinpa Posted October 22, 2021 Share Posted October 22, 2021 Hmmm...How do they know what bike it's going in. You have an ST1300 right? Link to comment Share on other sites More sharing options...
howie333 Posted October 23, 2021 Author Share Posted October 23, 2021 7 hours ago, peteinpa said: Hmmm...How do they know what bike it's going in. You have an ST1300 right? Yea, well if on a future warrantee issue, they asked what bike I installed it in, I better know what bike the larger battery supposed to fit in ! 1 Link to comment Share on other sites More sharing options...
howie333 Posted October 23, 2021 Author Share Posted October 23, 2021 Well; I think I've got a choice of 2 batteries: The Scorpian YTZ14S, 11.2AH/230cca from Batterystuff, $70 or the XTREME from Battery plus, 11AH/ 210cca $90. I could also go w/The stock size OEM battery and is either 8.6 or 9.1 AH and 190cca. The only extra load on bike are yamaha heated grips, a CB radio and a chain oiler. Please help . TNX... Howie.. Link to comment Share on other sites More sharing options...
JonnyB Posted October 23, 2021 Share Posted October 23, 2021 I changed to a larger 14A battery after 4 years. Other than a small saving in weight and cost I can't see the point in staying with the standard size. It's like Yamaha specced for the bigger battery at the design stage, then saved a few quid, dollars etc. with a smaller battery and a foam spacer. 1 Link to comment Share on other sites More sharing options...
duckie Posted October 23, 2021 Share Posted October 23, 2021 Handy little site…….https://www.electrosport.com/pages/technical-resources Link to comment Share on other sites More sharing options...
howie333 Posted October 23, 2021 Author Share Posted October 23, 2021 22 minutes ago, duckie said: Handy little site…….https://www.electrosport.com/pages/technical-resources Thanks; all conn. and stator good. load test proved bad battery. 1 Link to comment Share on other sites More sharing options...
howie333 Posted October 23, 2021 Author Share Posted October 23, 2021 13 hours ago, JonnyB said: I changed to a larger 14A battery after 4 years. Other than a small saving in weight and cost I can't see the point in staying with the standard size. It's like Yamaha specced for the bigger battery at the design stage, then saved a few quid, dollars etc. with a smaller battery and a foam spacer. the larger battery is near 2 lbs heavier . that's a lot. Link to comment Share on other sites More sharing options...
Supporting Member betoney Posted October 23, 2021 Supporting Member Share Posted October 23, 2021 @howie333 - I'm curious as to the need for a larger battery. A lot of people run multiple devices, including heated seats and riding gear on their bikes and you never hear of any issues, -battery capacity or needing excessive cca requirements just aren't topics that get discussed with this bike. 2 ***2015 Candy Red FJ-09*** Link to comment Share on other sites More sharing options...
howie333 Posted October 23, 2021 Author Share Posted October 23, 2021 2 hours ago, betoney said: @howie333 - I'm curious as to the need for a larger battery. A lot of people run multiple devices, including heated seats and riding gear on their bikes and you never hear of any issues, -battery capacity or needing excessive cca requirements just aren't topics that get discussed with this bike. FJ-09 motor starts always seemed to need a little extra torque to start compared to a lower compression engine on my Kawasaki Ninja 650R. The only additional loads on the FJ are a J+M CB radio, a chain oiler, and OEM heated grips. If safe, i'll stick w/stock battery size. 1 Link to comment Share on other sites More sharing options...
JonnyB Posted October 24, 2021 Share Posted October 24, 2021 the larger battery is near 2 lbs heavier . that's a lot. Near 2lb? Actually 1.6 lbs. I would be astonished if anyone could tell from moving or riding a Tracer if it had the bigger battery fitted. Link to comment Share on other sites More sharing options...
peteinpa Posted October 24, 2021 Share Posted October 24, 2021 1.6 lbs and 7 dollars. I'll go bigger. Link to comment Share on other sites More sharing options...
iamthedruman Posted October 29, 2021 Share Posted October 29, 2021 On 10/21/2021 at 10:10 PM, howie333 said: Yuasa OEM $211, or Mighty Max equivalent $33 ?? I did aftermarket for about $50 CAD. 2 years so far. Link to comment Share on other sites More sharing options...
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