Author Topic: Physics question about a 12 V lead battery  (Read 1166 times)

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Offline hs0zfe

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Physics question about a 12 V lead battery
« on: August 22, 2010, 11:12:15 AM »
A few days ago, I hired a mechanic to replace the acid and charge it. My motorcycle wasn't starting any more... The guy felt the need to demonstrate the potency of that battery. so he shorted it repeatedly, letting sparks fly. The battery became very hot and I just gave him 500 Baht and sent him away.

Q1: that battery is toast, isn't it?
Q2: any use for it with QRP transceivers?
Q3: how does one test a battery? The only method I know is a voltmeter under load. If the voltage drops to say 11.5 V, then the battery needs to be recycled. Do you know a different method?

Mni tnx es vy 73,


P.S.: this will be more serious with an XXX A/h car or truck battery.
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