Yup… Bcb is spot on… Likely a battery or charger issue..But it does raise an interesting question for me ( basically meaning more research required) — With DC power, voltage is additive in series, current additive in parallel… But this is only true when those circuits are closed… Meaning you can tap a single battery in a series configuration for 36v (trolling motor) and get 12v, as long as the 36v circuit is open (trolling motor not in use).. Engaging the trolling motor (36v series circuit) while attempting to start the engine (12v tap circuit) in this configuration would effectively drop starter voltage to 0 since loads must be in parallel ( would effectively be like plugging both positive and negative starter leads to the positive terminal, no potential difference means no current flow).. I know this is a bit askew of traditional thought processes and I am a bit strange, by my own admission, but the end result is that it should be ridiculously easy to configure a bank of solid state relays or simple starter solenoids for that matter to utilize all batteries for trolling, or starting and accessories as required by the flip of a switch.. The challenge is to maintain 12v for accessories while the series circuit is in use.. A resistor bank should do it quite nicely.. Ill play with the math and get back to you chaps..JT
