15-05-17, 01:09 PM
There are three different problems you could be having, 1) something is draining it, 2) it is focced, or 3) it is not being properly charged.
12.31 is a little low but not too serious, dropping to 12.26 after three days is not too bad but was the battery connected to the bike during that time? If not, try hooking it up and monitoring the drop over three days as you may have something that is draining it such as a faulty alarm or a short in the wiring.
A damaged battery can still be putting out the correct voltage but if it can't supply the current, it wont start your bike. With your battery connected, put your voltmeter across the terminals. Record the voltage. Now turn the ignition on and record it again. It should be lower but still be over 12v, preferably closer 12.5. Now press the starter and watch the voltage. If it drops below 9v you probably have internal damage and should think about replacing it. Below 10v and it might just need reconditioning.
Once the engine starts and has warmed up, measure the voltage again. If it is less then 12.75 at idle or less then 13.5 at 4k rpm then you have a problem with your charging circuit.
You should do all three tests as you may well have more than one problem.
12.31 is a little low but not too serious, dropping to 12.26 after three days is not too bad but was the battery connected to the bike during that time? If not, try hooking it up and monitoring the drop over three days as you may have something that is draining it such as a faulty alarm or a short in the wiring.
A damaged battery can still be putting out the correct voltage but if it can't supply the current, it wont start your bike. With your battery connected, put your voltmeter across the terminals. Record the voltage. Now turn the ignition on and record it again. It should be lower but still be over 12v, preferably closer 12.5. Now press the starter and watch the voltage. If it drops below 9v you probably have internal damage and should think about replacing it. Below 10v and it might just need reconditioning.
Once the engine starts and has warmed up, measure the voltage again. If it is less then 12.75 at idle or less then 13.5 at 4k rpm then you have a problem with your charging circuit.
You should do all three tests as you may well have more than one problem.