Why do rechargeable batteries have to be discharged then recharged like 2 to 4 times before normal use?

I'm being told more often nowadays that when one gets a new portable product with a rechargeable, one should first discharge the battery all the way down to zero, then recharge to max, then repeat for 2 or 4 times. Why do rechargeable batteries have to go through this process?

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  • 1 decade ago
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    Not true. I have never done this, not do I plan to. And none of the manufacturers recommend this.

    Find who has been telling you this and give them a dope slap.

    You are actually subtracting from the life of your batteries by doing this.

  • 1 decade ago

    It is not true unless you got a bad battery pack that some of the cell has reverse its polarity. If it happened,then you need to discharge them completely following a fully charge. Hopefully all the cells will back to normal. But I found if the cells have this reverse behavior,it is allmost reach to its cell life. If you bought it new, you better take it back to change for other one.

  • 4 years ago

    NiMH have not got a sizeable "memory effect" (i'm an digital engineer who works appreciably with them). it incredibly is extremely minor. i've got faith you purely have undesirable batteries, or possibly a nasty *digital camera* (it incredibly is attainable). one million,000 recharges isn't very functional, yet you may get hundreds of cycles. remember NiMH has some 30 day self-discharge fee, so in case you depart the digital camera sitting unused (even not put in), you will might desire to charge them returned.

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