Tank Slap - Motorcycle Forum

Optimate is showing the battery as fully charged but the bike wont start
The rev needle doesnt even sweep but the fuel pump primes
Thumb starter and just get the relays clicking

Bridged the started solenoid and it turns over but is very laboured as if the battery is flat

So is the trickle charger dodgy or is the battery fubar'd ?

How old is the battery?

Do the headlights come on?

Battery is approx 8 months old and yes the lights come on

Have you checked the battery connections ? Still sounds like a battery issue to me.

Yeah they were solid
Fuses are all sound

Just borrowed a battery charger from a neighbour and just checking it over now

Spudda wrote:Battery is approx 8 months old and yes the lights come on

Has the bike been left on the Optimate, or has the battery been left to go dead & then been revived by the Optimate.?
If it's been left on the Optimate from new, there is no way an 8 month old battery should be anything other than perfect condition & your fault should lie eleswhere.
If your battery has been flat for <8 months then it may be too sulphated up for even an Optimate to resurrect.

I wouldnt say its been on the optimate for the whole 8 months, probably on for a total of 4 months
This battery charger ive borrowed has a desulphate mode on it too so I'll see what happens