That is a common winter problem. I always take the battery off to recharge it, and now do it the night before (I have been caught out many times!)
There are a few battery conditioners that you connect up and leave while the bike is left unused for any time, but I rarely leave my bike for all that long, but every time I do it's flat!
I think my bike has a very slight drain on the battery, as it has done it more or less from new. Normally though it gets used frequently enough to prevent it being a problem. I must investigate either getting it fixed or getting a conditioner.
That is a common winter problem. I always take the battery off to recharge it, and now do it the night before (I have been caught out many times!)
There are a few battery conditioners that you connect up and leave while the bike is left unused for any time, but I rarely leave my bike for all that long, but every time I do it's flat!
I think my bike has a very slight drain on the battery, as it has done it more or less from new. Normally though it gets used frequently enough to prevent it being a problem. I must investigate either getting it fixed or getting a conditioner.