Battery Draining!

[R1stu]

Ok, want to use the bike more now as cheeper than the car. But the battery seems to die overnight, qnd wont turn over the bike.

I can bump start the bike and then run it for five mins or so and then it will run and start the whole day ok.

The battery is only a few months old.

any ideas, it was stood since begining of april.
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Stolen bike. 2000 R1: https://www.bikepics.com/members/r6stuk/00r1/
Current bike 1991 Honda ST1100 Pan European, 1986 Honda cb350sg (Finished)

[DrDonnyBrago]

Have you tried giving the battery a good full charge from a dedicated battery charger?

[harscot]

Sounds like thats all it needs, I could be wrong though, you may have a loose connection shorting and draining the batt, but try a full charge first and see how it goes
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[R1stu]

ive given it 2 full charges now from the mains charger. ive got an optimate at my old hse and when i get entry to the hse and loft ill grab it, but the battery was replaced by the garage with a new one when i brought the bike christmas.

and after the bikes been started it will start no problems for the rest of the times its in use, but come next day it will turn over once and then die,
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Carbon closet tart! https://www.bikepics.com/members/r6stuk/02r6/
Stolen bike. 2000 R1: https://www.bikepics.com/members/r6stuk/00r1/
Current bike 1991 Honda ST1100 Pan European, 1986 Honda cb350sg (Finished)

[Budgetboy]

Does it have an alarm,,These tend to eat batteries after a time.

you need a multimeter to test to see if you have a current drain
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[finpos]

[Borris]

Any chance it could be something else like a dodgy lead that's only affected when it's cold/damp at a certain time of day?
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Suzuki EN 125-2
Honda CB 500

[R1stu]

[Skudd]

Battery is buggered. You need a new one.
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[Nick 50]

Not a reg/rec problem?

Sounds similar to an issue I was having. The reg/rec had gone and was killing the battery. Would charge it up full and would be ok for a day and then be dead again. Had to change both the reg/rec and battery. Was only a 3 month old Motobatt, now dead
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Current Bikes: ZX7r 97 (Black Beauty), VFR400 NC24 (The banana)
Previous Bikes: Aprilia Tuono 03 (The Beast), CBR600f (97)
First bike: A GZ125 Lemon.......

[R1stu]

This has started to happen again! I brought a new battery and was working ok until about 3 weeks ago!

How do I test the regulator and rectifier?
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Carbon closet tart! https://www.bikepics.com/members/r6stuk/02r6/
Stolen bike. 2000 R1: https://www.bikepics.com/members/r6stuk/00r1/
Current bike 1991 Honda ST1100 Pan European, 1986 Honda cb350sg (Finished)

[whitedevil]

https://www.electrexworld.co.uk/pdfs/Troubleshooting-3P-PMG-&-RR.pdf
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GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

[R1stu]

[whitedevil]

What does it show when the engines off? and after an hour or 2? if its dropping you probably have a short somewhere. Have you tested the stator?
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GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

[Clutchy]

Doesn't sound like the reg/rec just yet, more like leakage/drainage.


Did you do step 1? If so what did you get?
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[uberkron]

Flooded motorcycle batteries are cheaply constructed, the plates have disintegrated. Lately ive been called out to diagnose faults ive already diagnosed, all batteries. It seems nobody can believe a tub full of acid and lead being carried on a bike could fail. They are especially intolerant of being left alone. The only bike battery ive had last 12 months is the scooters, as it gets 300km per week.

A failing battery can self discharge, have good esg,s good standing voltage and not take a load. It is the weakest part of the charging system and above that it is a consumable. Buy cheaper old tech batteries and replace them euthanasia style.
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i ride a zip 50 2smoke. It overtakes a hundred times a day.

[Walloper]

[R1stu]

Going to have to swap my meter later! Battery dead this am, so went to get meter to test and it wont work Only brought it yesterday so not happy. Have lost receipt so hope they will swap!

The bike is used most days. Longest I have left it was 4 days without use. This is when the issues started.

I will pop back to the range when on lunch to swap it over or buy another one (Then take original back tomorrow for refund)
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Carbon closet tart! https://www.bikepics.com/members/r6stuk/02r6/
Stolen bike. 2000 R1: https://www.bikepics.com/members/r6stuk/00r1/
Current bike 1991 Honda ST1100 Pan European, 1986 Honda cb350sg (Finished)

[Walloper]

[R1stu]

[whitedevil]

There is another similar guide HERE that you may find easier to understand etc...
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GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

[R1stu]

Done the DC amp test and it just reads 1 all the time. put the brake on and it blue fuse in meter!
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Carbon closet tart! https://www.bikepics.com/members/r6stuk/02r6/
Stolen bike. 2000 R1: https://www.bikepics.com/members/r6stuk/00r1/
Current bike 1991 Honda ST1100 Pan European, 1986 Honda cb350sg (Finished)

[ZebraDriver]

From the tests you have done it sounds like your reg/rec is ok. Try a simple test. After using your bike park it up and disconnect the battery. Leave it for the same period of time that you have the problem and then re connect and try the battery to see if it will start the bike.

If it won't start then the battery is self discharging. Replace the battery.
If it does start then try connecting your meter in series with the battery with the meter on the DC amps range. DO NOT SWITCH ANYTHING ON !!! If you can get a reading then there is a drain from somewhere. With the meter connected like this remove the fuses one at a time and see if the reading changes - your looking for it to go to "0". If this is the problem with a bit of work and a wiring diagram you should be able track the source of the leakage.

ZD

[uberkron]

Heres it decoded, stop effing round and buy a battery each year.

Replace it before it dies, your starter, solenoid and reg/rec will last longer.

I am an auto electrician. Many do not understand my rantings.
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i ride a zip 50 2smoke. It overtakes a hundred times a day.