حافظة بطارية لهاتف iPhone 12 Pro Max، حافظة شحن واقية محمولة بسعة 4500 مللي أمبير في الساعة، نسخة احتياطية ممتدة للبطارية، متوافقة مع Apple iPhone 12 Pro Max، حافظة شاحن قابلة لإعادة الشحن

Capacity: Power banks come in various capacities, measured in milliampere-hours (mAh) or watt-hours (Wh). The higher the capacity, the more charge a power bank can provide to your devices., Output Power: The output power of a power bank is measured in volts (V) and amperes (A). Multiply these values to get the output power in watts (W)., USB Ports: Power banks typically have one or more USB ports for connecting charging cables. Some may also have USB-C or micro USB ports for recharging the power bank itself., Fast Charging: Some power banks support fast charging, which can significantly reduce the time it takes to charge your devices., Safety Features: Quality power banks often come with safety features such as overcharge protection, short-circuit protection, and temperature control to prevent damage to both the power bank and your devices.