MaggieMay Posted March 29 Share Posted March 29 Focus 21 ecoboost mild hybrid. With flat battery. Tried charging with leads reversed.. Realised and removed.. Tried jump starting and engine just turns over... Possible fuse blow or any other suggestions.. Thanks. Quote Link to comment Share on other sites More sharing options...
alexp999 Posted March 29 Share Posted March 29 How long was it connected backwards? What charger? Most decent trickle chargers have reverse polarity protection and won’t do anything connected backwards. 2 Quote Link to comment Share on other sites More sharing options...
MaggieMay Posted March 29 Author Share Posted March 29 Wasn't trickle was probably 20 ur old charger Quote Link to comment Share on other sites More sharing options...
unofix Posted March 29 Share Posted March 29 24 minutes ago, MaggieMay said: Wasn't trickle was probably 20 ur old charger Then I would expect that the fuse in the charger has blown. 2 Quote Link to comment Share on other sites More sharing options...
MaggieMay Posted March 30 Author Share Posted March 30 11 hours ago, alexp999 said: How long was it connected backwards? What charger? Most decent trickle chargers have reverse polarity protection and won’t do anything connected backwards. Was a old one.. Probably 20 + yrs.. Connected for maybe a few mins..... Quote Link to comment Share on other sites More sharing options...
StephenFord Posted March 30 Share Posted March 30 39 minutes ago, MaggieMay said: Was a old one.. Probably 20 + yrs.. Connected for maybe a few mins..... May I suggest you update your battery charger? You wouldn't use a 20 year old mobile phone, technology has moved on quite a pace since your charger was made. Many on here use a SmartCharger made by MayPole - inexpensive, and very efficient. Also, will not work if connected 'backwards' so won't damage anything... 1 Quote Link to comment Share on other sites More sharing options...
MaggieMay Posted March 30 Author Share Posted March 30 Update.. Charged for 5 hrs, engine turned over for about 30 secs then kicked into life. Massive thanks to all who replied. I had spoken to ford today and they advised that all the modern technology in them. Means the car need frequent use.... May need to investigate a battery with more power/solar trickle charger..... Any advice Quote Link to comment Share on other sites More sharing options...
StephenFord Posted March 30 Share Posted March 30 1 minute ago, MaggieMay said: ..... Any advice Yes, read the post before your last one 🤣 1 Quote Link to comment Share on other sites More sharing options...
unofix Posted March 30 Share Posted March 30 2 minutes ago, MaggieMay said: Any advice See above post. 1 Quote Link to comment Share on other sites More sharing options...
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