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There are thousands of portable battery packs with USB or Lightning ports that let you charge your phone, tablet, or other gear on the go without stopping to plug into a wall jack.

But what if you want to charge a laptop or another device that doesn’t use a USB or Lightning cable for charging? There are also some portable battery packs that have 3-prong adapters that allow you to plug in your laptop’s power brick, or just about anything else.

These batteries are usually a lot more expensive than their USB-only counterparts. But right now RAVPower is offering one of the best deals I’ve seen on a portable battery with an AC jack. You can pick up a 20,100 mAh battery for $70 with the use of a coupon code.

The battery also has a USB Type-A and Type-C ports that you can use to charge multiple gadgets at once. Note that the battery only provides up to 65 watt output, so you can probably use it with most modern laptops, but it may not provide enough power to keep a high-end gaming notebook charged. And you’re certainly not going to want to plug in a microwave oven.

If you need a bit more power, there’s also a 27,000 mAh model with 100 watt maximium output and an extra USB port that’s on sale for $99 (with coupon).

Here are some of the day’s best deals.

Batteries

Tablets and smartphones

Other

You can find more bargains in our daily deals section.

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