Diy Battery Tester Aa

Diy Battery Tester Aa
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Simple LED AA Battery Tester: We use a lot of rechargeable batteries at home, and I can never tell which ones work and which ones need to be recharged, and  .
Let then say that you want the voltage selector switch to choose between two maximum ranges – 2V (for AA-type and similar batteries) and 10V (for testing 6V .

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