{"product_id":"aa-aaa-c-d-9v-button-cell-voltage-battery-tester-testing-check-checking-tool","title":"AA, AAA, C, D, 9V Button Cell Voltage Battery Tester Testing Check Checking Tool","description":"\u003cp\u003eThe tester has three ranges, `Good' (green), Low (yellow), and `Replace' (red). The sliding red contact is adjusted manually.\u003c\/p\u003e\r\n\u003cp\u003eThe tester is designed to work with various types of 1.5 volt batteries (AAA, AA, C, D, disc or button type). Do not try testing a battery of a higher voltage, as you may fry a resistor, blow a fuse, or otherwise damage the tester. There is a separate set of contacts for testing 9 volt batteries.\u003c\/p\u003e\r\n\u003cp\u003eTo precisely measure a battery's actual output, a voltmeter would be used. A tester like the BT20 only provides a rough idea of battery strength. A new 1.5 volt, non-rechargeable battery, delivering the full 1.5 volts, should read at the top end of the green scale. Rechargeable batteries (AA, AAA, C and D size) are designed to produce only 1.2 volts at full output. Because this is 80 percent of the 1.5 volt maximum the tester is rated for, a NiMH battery will normally read somewhere in the middle of the green section. This may lead some to believe that the battery is `weak', when it is actually at its full rated power. While a lower reading is normal for a NiMH battery, a 1.5 volt non-rechargeable battery with the same reading, is actually down about 20 percent from full voltage, and may not have that much useful life left. Rechargeable 9 volt batteries are rated at only 7.2 volts, and would similarly produce lower readings, even at full power. \u003c\/p\u003e","brand":"Sona Enterprises","offers":[{"title":"Default Title","offer_id":71721123217661,"sku":"ezt1793128855060","price":14.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/6774\/2205\/files\/aa-aaa-c-d-9v-button-cell-voltage-battery-tester-testing-check-checking-tool_1.jpg?v=1793128858","url":"https:\/\/silasneatvault.shop\/products\/aa-aaa-c-d-9v-button-cell-voltage-battery-tester-testing-check-checking-tool","provider":"My Store","version":"1.0","type":"link"}