foxnet22 Posted August 31, 2010 Report Share Posted August 31, 2010 been making a magnet from a wiper motor.the battery ive got to use on magnet is a 12volt 7ah would this be suitable and how long would it last if it was running constant.thanks. Quote Link to comment Share on other sites More sharing options...
nickcass23 Posted August 31, 2010 Report Share Posted August 31, 2010 I use the same 12v 7ah battery on my magnet and most ive had out of it is 6.5 hours. Not bad me thinks!!! Quote Link to comment Share on other sites More sharing options...
wymberley Posted August 31, 2010 Report Share Posted August 31, 2010 It's sad but true that the only way anyone can answer that question is if you can tell us how many amps YOUR rotary is pulling. Do you have a tame/pet electrician who can test it for you? Chees Quote Link to comment Share on other sites More sharing options...
nickcass23 Posted September 1, 2010 Report Share Posted September 1, 2010 Im sure you dont need to be that serious about it, if you allow 4-5 hours and carry a spare(Battery Masters £10ish plus £5 p+p) that would be more than enough battery time for anyone!! Quote Link to comment Share on other sites More sharing options...
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