140W Portable Fast Charger 25000mAh with LG 21700 Battery,...

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Reletech was founded in 2021 with a focus on energy storage devices. In mid-2025, certain products drew widespread global attention due to battery defects. In response, Reletech established a strategic partnership with LG batteries, committing to the development of safe and reliable portable energy storage devices.In 2026, Reletech will expand into the Americas and Australian markets, further strengthening its global presence.

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140W Super Fast Recharge: Equipped with a high-power interface, this 140W power bank with a 25000mAh capacity and LG 21700 battery can quickly charge your laptop while significantly speeding up phone charging.
25000mAh High Capacity:The 25000mAh power bank provides reliable backup power for long trips, business travel, camping, or daily work. It can charge an iPhone 16 Pro up to 4.5 times or supply substantial power to laptops, making it an ideal portable charger for MacBook and USB-C devices.
Triple-Port Simultaneous Charging: The built-in 140W USB-C multi-protocol port allows you to charge up to three devices at the same time. It’s perfect for group settings, eliminating the wait and ensuring everyone’s devices stay charged.
Intelligent Charge Monitoring: An integrated digital display clearly shows the remaining battery percentage, real-time input/output power, and the estimated time to full charge, allowing you to precisely manage power usage and always know the status of your devices and the power bank.
Advanced Safety & Long-Lifespan Design: Built with premium LG 21700 battery cells, this high-capacity power bank maintains over 80% capacity after 1,000 charge cycles. Multiple safety protections, temperature monitoring, and efficient heat dissipation ensure safe charging for laptops, smartphones, and other USB-C devices.

power banks for laptops

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