Picked this up last spring; know nothing about its history. But it ran great all summer; one pull starting. Question concerns the battery and charging. It came with a dead battery (probably the original) but no charger. I got it to start charging the other day with a borrowed charger but it would only get up to a little over 10V. I was hoping that amt of juice might be enough to start one or twice it even though it would not be a reliable option week in and week out. But when I turned the key, nothing, not even a weak attempt to turn the starter (fuses are good). Is that because even though 10.6V "seems" close to 12V, it is way too little to even get the starter to make a noise? Or could it be something else?