Battery Issues or ?

Have a 2011 Skeeter ZX 200 and it has a 3 bank minn kota on board charger for the three batteries. I keep the on board charger plugged in all time. Went to raise the big motor and nothing. Placed a charger onto the cranking battery and motor tilt/trim would work. I have replaced the two trolling motor batteries but not the cranking battery.

Could the cranking battery be shot and another one purchased? I use Everstart deep cycle batteries but not sure what size cranking amps I should buy.

either that or your charger has a bad bank. I only plug my charger in the day before I plan on using the boat.

Thanks

Clean all your connections , check the charger to make sure it's working, & fully charge batteries. If problem persist then you've prolly got a bad battery. Plug it in as soon as you get in from a trip. Charge batteries up asap after use. Then you can unplug them AFTER bringing them back to FULL charge.
Do not let them sit in a discharged state. That'll kill a battery quick.
If I'm not going to use mine for an extended period I will plug charger up for a day or 2 every 2 weeks. Always top charge them before a trip & full charge them as soon as you get home.

Thanks

Can someone tell me what size Ever Start Deep Cycle Cranking Battery my 2011 Skeeter ZX 200 needs? The motor is a 2011 Yamaha VMax HPDI 200 hp.

Thanks

How old is the Cranking Battery? May not be holding a charge under load.

Walmart battery a group 29 is the largest now
I use an Interstate group 31 for motor

I have changed all batteries except the cranking, I thing it is easily 6-7 years old and not charging now.

Bring battery to a shop and test under load. I don't think your battery is holding up at 6-7 yrs old.

Thanks

If you battery drops too low, the on-bank charger won't charge it. It needs to be charged up to a full amount with a regular charger (if it's even possible). But 6-7 years is an old battery. It probably has a bad bank or two. Let us know what you found out