Practically dewinterized, but got tripped up.

[MMPRES]

Made it down the dock and got the boat 95% dewinterized, but never got it started and need some help. I'm no mechanic, but confident enough to do the work myself. Got everything done and buttoned up, but engine wouldn't turn over. Starter clicked, but didn't get the engine to fire. Before we go into the typical diagnoses for such a problem, keep in mind this is a brand new boat with 100 hours. Everything electrical worked (including ballast, stereo, etc.) but the engine just wouldn't turn over. So it seems to me it's a problem of getting to proper voltage to the engine. Checked to batteries and they had 10.0 and 11.6 V respectively. Granted, not full rated change, but certainly sufficient to start the boat (one would think). So I'm thinking I had the wiring configuration wrong on the batteries. I have a drawing (I'm no artist, but I think you'll get it) of how I hooked them up. If anyone could help me figure out the problem or point me in the direction of a wiring schematic, it would be appreciated.
I think the wires (tied to the Ground of B1 and pictured) are where I had the problem. Checked the breaker, and that was fine. Thanks guys.

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[zabooda]

10 and 11.6 volts under the starting load or no load? Jumper the starting battery and see what you get.

[rdlangston13]

10 and 11.6 is probably not enough to turn over. I would charge them and get them at least to 12v. Fully charged is 12.66v.

[rdlangston13]

at 10V and 11.6V your batteries have basically 0% charge.

[beat taco]

Sent from my SM-G930V using Tapatalk

[DOCDRS]

^^^^^^^^
Nicely stated Taco......so too few know that a 12 volt battery@12v is 0nly 50% charged.
His 10 V battery is probably toast and the 11.6 good for maybe this season. If he let them sit in a cold ,freezing environment, all winter its now a lesson learned

[kaneboats]

Beat me to it guys. Good info.

[MMPRES]

Thanks everyone. I had a hunch that was the issue. That chart is very helpful.