![I have 2 blue Optima batteries. The on board battery charger says one is fully charged but it won't start the boat. Any of you guys know how to deal with batteries? I have 2 blue Optima batteries. The on board battery charger says one is fully charged but it won't start the boat. Any of you guys know how to deal with batteries?](https://i.redd.it/b1bhwxy87cdb1.jpg)
I have 2 blue Optima batteries. The on board battery charger says one is fully charged but it won't start the boat. Any of you guys know how to deal with batteries?
![Amazon.com: OPTIMA Batteries OPT8014-045 8014-045 D34/78 YellowTop Dual Purpose Battery : Automotive Amazon.com: OPTIMA Batteries OPT8014-045 8014-045 D34/78 YellowTop Dual Purpose Battery : Automotive](https://m.media-amazon.com/images/I/81RGqXFfSeL._AC_UF894,1000_QL80_.jpg)
Amazon.com: OPTIMA Batteries OPT8014-045 8014-045 D34/78 YellowTop Dual Purpose Battery : Automotive
![OPTIMA Introduces Its First-Ever State-Of-The-Art Lithium Battery & Groundbreaking Features - UTV Sports OPTIMA Introduces Its First-Ever State-Of-The-Art Lithium Battery & Groundbreaking Features - UTV Sports](https://utvsportsmag.com/wp-content/uploads/2022/11/ORANGETOP-Lithium-Battery-1.jpg)