testing household batteries
How do I use a multimeter to test household batteries (AA, AAA, C, 9V, etc)?
I have never used a multimeter, but I want to buy one to use for testing batteries and doing other tasks around the house. Seems like a waste to buy a device that only tests batteries.
batteries made in many diffrent technology, like normal ones, alkalines, rechargables (ni-cd,ni-mh,li-ion) and so on. they cant be testet completely with a multimeter if you have no knowledge in electronics. but at least buying a multimeter is better idea than a battery tester! here are more details for non rechargable batteries:
a battery shows a higher than its real voltage when you measure it without a load, battery voltage must be measured when its driving a load (a device like a clock etc…). in this case bettery voltage should be near to that specefied on it, so its ok.
if battery is completely run out it has a lower than named voltage on terminals altought without any load, so if you read a 1.5v battery as 1v or something near it (like up to 1.2v) its relatively empty. for a 9v empty battery you may read 7v. these batteries can’t power the device anymore.
test of new batteries are easy, eg. for a 1.5v you must read 1.55v or a little higher (because its new and thers no load), 9.5v for a 9v battery and so on… this voltage will drop a little when you supply it to the device and get to the battery’s named voltage.
so you have to measure the battery voltage when a device powered by it.
good luck
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IIT 26440 Battery Charge Indicator Tester $3.96 A drawer full of batteries and no way to know what works and what doesn’t. It’s a common conundrum. Which one will power the remote the longest? The Wiimote is running low; a replacement is needed before the princess gets carted off again. How do you solve these life dilemmas? With a battery charge tester! This little gadget quickly and easily tests batteries for how much charge they have, whether… |
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Zadro Nano UV Disinfection Light $79.99 The Zadro Nano UV disinfection light scanner is a wide band Ultraviolet light that will eliminate 99.9% of bacteria and virus surface contaminants from virtually any kind of surface in only 10 seconds. Its wide light ensures a quick sweep and disinfection of any area. Works great for preparing foods. The large scanning surface can be used to disinfect spaces in public areas such as hotels, restaur… |
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Coppertop Alkaline Batteries, AAA, 10/Pack $3.49 Sold as one unit. (1 unit = Cd/10 x 10.) Size: AAA. 1.5 volt. Value pack. Card of 10. Manufacturer number: MN2400B10Z. SKU #: 3250487. Country of origin: (TBA). Distributed by Duracell Div. of P & G…. |
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Indoor/Outdoor Moisture Sensor Meter, soil water monitor, plant care, garden,lawn $4.75 The Moisture Meter instrument measures the moisture content of soil, indicating when it is time to water your plants. Three various zones are indicated on the top of the meter to indicate the level of moisture needed for various types of plants. Moisture Sensor lets you know the humidity of your soil. The easy to read graduated dial indicates if the soil is dry, moist or wet so that a lawn or gard… |
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Fluke 62 Mini Infrared Thermometer $78.49 For professionals who rely on accurate temperature readings to do their jobs, the Fluke 62 Mini Infrared Thermometer offers best-in-class accuracy of surface temperature readings in less than a second. Designed with single point laser sighting, this rugged, compact thermometer takes accurate readings from up to six feet away. It also offers LCD backlighting for visibility in the dark, a broad temp… |
