As laptops have become more powerful and feature-packed, their battery life has also decreased. This has led to a demand for portable laptop battery chargers that can keep laptops charged even when there is no access to an electrical outlet. In 2023, there are several highly rated portable laptop battery chargers available on the market.

1. Anker PowerCore+ 26800 PD: This portable charger has a massive capacity of 26,800mAh and supports USB-C PD (Power Delivery) fast charging. It can charge a MacBook Pro and other USB-C laptops multiple times. It also comes with a 30W USB-C wall charger for fast charging.

2. RAVPower 27000mAh PD Portable Charger: This is another high-capacity portable charger with a 27,000mAh capacity. It also supports USB-C PD fast charging and has multiple ports for charging multiple devices simultaneously. It can charge a MacBook Pro and other USB-C laptops multiple times.

3. Mophie Powerstation AC: This portable charger has a capacity of 22,000mAh and can charge laptops, smartphones, and other devices simultaneously. It also has an AC outlet that can power laptops up to 100W. It is compact and portable, making it ideal for travel and outdoor use.

4. Omnicharge Omni 20+ Portable Charger: This portable charger has a capacity of 20,000mAh and can charge laptops, smartphones, and other devices. It has multiple ports for charging devices simultaneously and can even power surge-protected AC outlets. It also has a built-in OLED screen that displays real-time data.

5. MAXOAK 99Wh/26756mAh Portable Charger: This portable charger has a capacity of 26,756mAh and can charge laptops, smartphones, and other devices. It supports USB-C PD fast charging and has multiple ports for charging devices simultaneously. It also comes with a 60W wall charger for fast charging.

In conclusion, these are some of the best portable laptop battery chargers available in 2023. They offer high capacity, fast charging, multiple ports, and compactness, making them ideal for travel and outdoor use. It is essential to choose a portable charger with sufficient capacity to charge your laptop and other devices for an extended period without needing to be recharged itself.