Testing a system for current drain To check if something is draining your battery while your bike is turned off you need to test for current, not volts. To do so, do the following: Switch your Digital Multimeter to DC AMPs. Amps is usually indicated by an "A" on the Multimeter Switch. AC is usually shown as a "~" symbol and DC shown as a "-" symbol. You usually have to move the Multimeter positive lead to a separate socket on the Multimeter. Sometimes there are 2 sockets, a high range and a low range. Always test on the highest setting first. For example: high setting on your multimeter may be 10 Amp. Test on the 10 Amp setting first, then if the current drawn is less than your Multimeter Low setting, move to that setting and keep testing. In my example my Multimeter low setting is 0.3 Amps. Also indicated as 300mA (mA x 1000 = A). Buy Digital Multimeter Was this information helpful? Sign up to Get Updates and Offers.Created on October 21, 2011, Last Modified on August 24, 2022 Is a parasitic draw measured in volts?Testing Your Battery for Parasitic Load. To check if something is draining your battery while your bike is turned off you need to test for current, not volts.
How do you check for parasitic draw with a multimeter?After you pull a fuse, check the multimeter to see if the reading changes. If it doesn't change or only drops a few milliamps, replace the fuse and move on to the next one. When pulling a fuse causes the multimeter reading to drop significantly, you've found the electrical circuit that's creating the parasitic draw!
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