ZeroLemon 7500mAh battery not being recognized/chargingTips


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  1. coppcore

    coppcore New Member

    This week my ZeroLemon 7500 mAh extended battery arrived for my Galaxy S4. Simply put, it's not being recognized when I'm trying to charge it. I insert this new battery, plug in my charger to begin the 12 hours they say to initially charge it, but the battery isn't even being recognized. The charging screen that normally pops up when plugging in a dead phone does not show up. I'm using the default, stock charger from Samsung. I went back to my stock battery just to make sure there was nothing wrong with the charger, and it's working just fine.

    The battery is in nice and snug, as is the charger, so I really don't know what's wrong. Do I have, dare I say it, a lemon from ZeroLemon? There is just absolutely no activity from trying to charge this battery.

    Thanks for any help.

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  2. Rukbat

    Rukbat Well-Known Member

    I'd guess it's a lemon. (If the battery sat around too long, it totally discharged itself. (Most rechargeable battery technologies - LiIon, NiCd, etc. self-discharge at a slow rate.) Charging a totally discharged LiIon battery is a few steps beyond dangerous. If you're lucky they just burn. If not, they can make nice bombs. So there's a little circuitry inside the battery that, when the charge gets too low, disconnects the battery from the terminals. And it's a one-way thing. It takes a battery lab to reset it and get it working again (which isn't always successful - and unless it's a VERY expensive battery, it's not worth it).

    Contact them for a replacement.

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