Billy. Posted November 30, 2008 Report Share Posted November 30, 2008 Hello, Basically I'm off shooting tomorrow morning and I've still not managed to buy/find a cheap battery for my new magnet. I've got another one that I use for my flapper, which is 1.2ah. I got my magnet from Shoot Warehouse and it's the bog standard one. Would anyone be able to give me an estimate as to how long I might be able to get out of it, as I won't bother if it's only going to be about an hour... Ta, Will Quote Link to comment Share on other sites More sharing options...
garyb Posted November 30, 2008 Report Share Posted November 30, 2008 Your welcome to take mine out mate if you can pop over this way ? PM me Quote Link to comment Share on other sites More sharing options...
Billy. Posted December 1, 2008 Author Report Share Posted December 1, 2008 Temporarily sorted. Thank you Garyb Quote Link to comment Share on other sites More sharing options...
garyb Posted December 1, 2008 Report Share Posted December 1, 2008 Just make sure you don't shoot the guts out of it Quote Link to comment Share on other sites More sharing options...
Catamong Posted December 1, 2008 Report Share Posted December 1, 2008 Will, Let us know how you got on. Cat. Quote Link to comment Share on other sites More sharing options...
Trooper82 Posted December 26, 2008 Report Share Posted December 26, 2008 I bought a portable jump starter from either Aldi or Netto for about £20. its is fairly simple to strip it down to get to the battery, which i think is about 17AH about half the normal price. this lasts all day when fully charged, to recharge just hook up a normal battery charger Quote Link to comment Share on other sites More sharing options...
Agent36 Posted January 10, 2009 Report Share Posted January 10, 2009 How to calculate how long your magnet will run for on your battery. 1) Measure the current draw of your motor. (most wiper motor magnets run at about 1.5 Amps depending on load) 2) Find the Amp Hour Value on your battery e.g 7AH 3) Divide the Battery Value (7AH) by the current the motor is drawing. 7AH / 1.5A = 4.6 hours Hope this helps.... Quote Link to comment Share on other sites More sharing options...
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