I thought when I bought my Silent Partner it gave a big range. Batteries are hard to gauge. They wear out at different rates also - I've gotten 1 year out of one; 2 years out of the next (same amount of usage).
I'm with
@dak95_00 - I hit in the morning; get home and plug it in right away - every time. And it's always done sometime before I go to bed - and ready for the next morning.
Edit: email the guys at sptennis.com - they are always responsive.
Do you play everyday? Mine has two batteries and I just replaced one after 6 years of use but not the other. I would've bought two but I didn't realize it had two at the time. I'm not certain I actually needed to either. I learned later that my charger was acting funny and needed unplugged to reset itself.
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A smart charger charges to a full load and then submits a trickle charge to keep the battery at full capacity. Lead acid batteries will lose their charge over time but the smart charger keeps it from happening.
A dumb charger just keeps sending in a charge and leaves it to the user/owner to unplug when they think they have a full charge. Good luck with that! It's also possible to overcharge and explode a battery. I've done it!
A quick charger must just send more juice faster. I don't know if that's good for the battery. Hopefully, it has a smart charger capability to it. If not, it's not worth it.
You want a smart charger!!!!!
