EnergyCell Slim 2 Power Bank 5000mAh review

A perfectly sound form of insurance for your phone battery during long days. It won’t deliver anything close to 5000mAh output, the USB connection is dated and speeds are nothing special. But it’s cheap enough these aren’t necessarily a deal-breaker. OK buildConvenient designBattery level estimate button Poor efficiency Slow charging, in line with its statsmicroUSB, in this age?

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