MiPow SP4000M-SR Power Tube mobile spare battery (4000mAh)

MiPow SP4000M-SR Power Tube mobile spare battery (4000mAh)

MiPow SP4000M-SR Power Tube mobile spare battery (4000mAh) with LED charge status display for mobile / smartphone / MP3 player / navigation devices silver (Accessories)
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Customer Review

Not working as expected!
If the battery is not used for a few days, it no longer works, and it works resist until he was connected for a few seconds to power. And as I go so have no outlet here, this battery does not help me.
Otherwise, it is very well made and looks chic.

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