ricochet Posted April 23, 2020 Share Posted April 23, 2020 the car had been unused for about a week , certainly no more than ten days but the battery was flat. it did same thing a few months ago so i turned the interior light off in case there was a power drain. Have the RAC sold me a battery thats not up to the job? ( 2-3 yrs old) Quote Link to comment Share on other sites More sharing options...
Heardy Posted April 23, 2020 Share Posted April 23, 2020 Have you got a volt meter to put across the main fuses to see if there's any load/ drain on it? Quote Link to comment Share on other sites More sharing options...
ricochet Posted April 24, 2020 Author Share Posted April 24, 2020 yes , i've got a multimeter but i wouldn't know where to go measuring or what readings i would be looking for. Quote Link to comment Share on other sites More sharing options...
ricochet Posted May 26, 2020 Author Share Posted May 26, 2020 keeps flattening. buying a current clamp meter to see if theres any current drain at rest, , thats if i can understand the instructions. jc Quote Link to comment Share on other sites More sharing options...
Impressed Posted May 26, 2020 Share Posted May 26, 2020 WITH EVERYTHING TURNED OFF...…... SET MILTIMETER TO 10A DC Disconnect the negative lead. One probe negative lead one probe battery negative, Someone will be able to tell you the normal residual reading for alarm etc. Do you have a Bluetooth dongle permanently in the OBD2 port? Quote Link to comment Share on other sites More sharing options...
Stock Posted June 3, 2020 Share Posted June 3, 2020 I can't tell you the residual load, however my battery still started mine after a month of sitting; so one week is definitely unusual. Could be a residual load, could be the battery. Quote Link to comment Share on other sites More sharing options...
ricochet Posted June 3, 2020 Author Share Posted June 3, 2020 I have o throttle controller SP1, plugged into the diagnostic socket , it was therewhen i bought the car. I bought a mini clamp meter Uni T 210ut but i couldnt get any info from it , maybe i couldnt understand the instructions. Battery prob, will call out RAC i think, but if it is i wont have one of their batteries again.! Quote Link to comment Share on other sites More sharing options...
Stock Posted June 6, 2020 Share Posted June 6, 2020 I thought the OBD2 power was on all the time, even when the car is locked? Couldn't that cause some residual drain? Quote Link to comment Share on other sites More sharing options...
ricochet Posted June 6, 2020 Author Share Posted June 6, 2020 Probably, but it hasn't caused a problem before. I am having a lesson in clamp meter use tomorrow. all that support for a University education is about to pay off. Quote Link to comment Share on other sites More sharing options...
ricochet Posted June 7, 2020 Author Share Posted June 7, 2020 Probably, but it hasn't caused a problem before. I am having a lesson in clamp meter use tomorrow. all that support for a University education is about to pay off. only about 20mA drain at most, deffo a poor RAC battery. I'll call the RAC out and see what they have to say. Quote Link to comment Share on other sites More sharing options...
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