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What size power adapter would be used for a cordless water pump that takes two double A batteries?
Wiki User
∙ 16y ago
it depends how the batteries are connected.
if you put the batteries both in positive side up you probably have a 1.5 volt system.
if you put one battery positive side up and one down you probably have a 3 volt system.
Check to make sure before you connect anything because you can damage the the water pump by connecting it to the wrong voltage or by reversing polarity.
if its a 1.5 volt system you have about 2000 milliamp/hours at you disposal
in a 3 volt system you have about 1000 milliamp/hours at you disposal
find the the time in hours the water pump will run on a new set of batteries will last.
1.5v 2000 mAh/1hour= 2000mAh 1.5volt power adaptor
1.5v 2000 mAh/2hour= 1000mAh 1.5volt power adaptor
1.5v 2000 mAh/3hour= 667mAh 1.5volt power adaptor
1.5v 2000 mAh/4hour= 500mAh 1.5volt power adaptor
1.5v 2000 mAh/5hour= 400mAh 1.5volt power adaptor
1.5v 2000 mAh/6 hour= 334mAh 1.5volt power adaptor
3v 1000 mAh/1hour= 1000mAh 3volt power adaptor
3v 1000 mAh/2hour= 500mAh 3volt power adaptor
3v 1000 mAh/3hour= 334 mAh 3volt power adaptor
3v 1000 mAh/4hour= 250 mAh 3volt power adaptor
3v 1000 mAh/5hour= 200mAh 3volt power adaptor
Remember as Tim the Toolman would say more mAh is better.
Wiki User
∙ 16y ago
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