Takes my car a while sitting on trickle charger before it'll start but won't on

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. There is a concern here that we really don't know if it is an electrical issue that is causing a problem, or a gasoline engine drivability issue. Perhaps it is both! First we need to make sure there is proper electrical power. Is the battery fully charged and able to sustain a load and be recharged? Does the charging system recharge the battery is needed? These are important questions that need to be answered. After we make sure a battery is fully charged and able to sustain a load, we need to look at engine performance. The engine running properly? Proper fuel, spark and air delivery? We won't know until testing is performed. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.