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Do You Know How To Test A Li-Ion 18650 Battery?

Lithium-ion (Li-ion) batteries are rechargeable and are increasingly being used in many electrical appliances,replacing their forerunner,the nickel-based battery.The reason is simple: Li-ion batteries produce a nominal voltage of 3.7 volts compared to 1.2 volts from a nickel-based battery.

Additionally,the milliamp hour (mAh) that can be drawn from a Li-ion battery is approximately three times the amount that can be drawn from a nickel-based battery. You can also purchase 3000mAH+ lithium ion batteries via online sources.

A Li-ion 18650 battery is the same size as a regular AA alkaline battery and generally has a nominal rating of 2,000 mAh.If you want to check that your Li-ion battery is in good condition,test it for voltage and the milliamp hour using a multimeter.

Look panel.It display multimeter should read between 3.6 and 3.7 volts if the good condition.If freshly charged batteries, reading may be up to 4 volts, but this does not decrease to 3.7 quite quickly.If read below 3 , 5 volts, charge your battery until full.

Let rest for a few hours and then test again.If voltage is below 3.5 volts you need to take to get a replacement because it shows it is his loss charge.Check milliamp hours using a multimeter. set to measure the milliamp hour and placed two metal rods from the multimeter to the positive and negative battery terminals as before.

Check the label on the side of the Li-ion 18650 battery to confirm its outputs voltage should read 3.7, but milliamp hours may be larger or smaller than 2,000 (some 3,000 mAh) .Find polarity terminal of Li ion 18650 circular batteries.