147 Franklin Airman Posted January 11, 2016 Share Posted January 11, 2016 I am throwing this out in the hope that someone has a magical solution. Series 11b running on 6 volts and original generator and a red top 55ah battery. I can drive the car for weeks during the day and it always turns over nicely. If I put the side lights on for 30 minutes, the battery drains and will not turn the engine over. With the engine revs at around 1500 rpm the voltage at the battery is 8.8 volts, if I put the side lights on it drops to 6.7v and stays there with the engine off. If I disconnect the battery with the engine running the side lights will light up no problem. Our local alternator service depot cannot test the generator for some reason so I am at a loss of what it might be. Link to comment Share on other sites More sharing options...
147 Franklin Airman Posted January 19, 2016 Author Share Posted January 19, 2016 An update on what I have found so far. I removed all the side light bulbs and found that no current was being drawn which eliminated a short in the wiring.I decided to take the easy route and replace the battery with a 140ah / 900 CCA and I noticed that the charging voltage was slow to increase to 8 volts.After an hours drive all seems to be good. Link to comment Share on other sites More sharing options...
f147pu Posted January 20, 2016 Share Posted January 20, 2016 I hope it stays that way! Link to comment Share on other sites More sharing options...
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