Continuing battery problems.

[Bibio]

apart from an open circuit no.

face facts your battery is fubar. the optimiser might give it new life but i doubt it.

i take it it's worse in the colder weather?

I'd' be happy if it was just the battery but just want to be sure. And it's always cold isn't it lol.

[Bibio]

for the past 3 years my battery has completely drained over winter but a charge on an oximiser has brought it back to life. the bike gets left a week between uses and starts no problem and the battery holds a charge.

if a battery is not holding a charge then its fubar and unlikely to be a fault of the bike (unless the bike is over charging) as it's charging while running but if left it will drain so more than likely the plates have warped or the acid level has dropped exposing the plates.

go and google how lead acid car batteries work and why they eventually give up.

I'll check the readings tomorrow but I agree. It's a Yuasa that's in at the minute. Is it best to go with the same or are there better ones to get?

Just found my thread from when this first happened and the readings I got.

Battery disconnected - 12.7
Battery connected - 12.7
On bike and idling - 12.9
5000 rpm - 14.4

Be interesting to compare to the readings tomorrow.

[Pete7]

You need to take the readings after say 10 hours or better still a full day after it has been charged or run. the reason being the battery plates will hold a surface charge that will give you higher than normal readings. This will dissipate over a day to give you the true voltage.

Pete

It's on an optimiser now so my plan was to take readings in the morning once disconnected and then at the end of the day after a good ride out, sound reasonable?

[Pete7]

Originally Posted by dirtyred619

It's on an optimiser now so my plan was to take readings in the morning once disconnected and then at the end of the day after a good ride out, sound reasonable?

Both will give you a surface charge since even on an optimiser the voltage must be higher than the battery voltage or it won't charge.

I would take the readings as planned then leave it alone Sunday night and take them again first thing Monday morning before going to work on it.

Pete

Originally Posted by Pete7

Both will give you a surface charge since even on an optimiser the voltage must be higher than the battery voltage or it won't charge.

I would take the readings as planned then leave it alone Sunday night and take them again first thing Monday morning before going to work on it.

Pete

Yeah I'll do that then so the readings are useful. Then if it looks like I need a new battery I can get one ordered and fitted hopefully before next weekend.

Well here's this mornings readings:

Bike off: 12.94
Bike on: 14.48
5000/RPM : 14.51

I'll take a reading in the morning now and see if there's any change.