The MFP (Mobile Freedom Power) series battery packs are specifically designed to power all electronic devices which require anywhere between 3V-26V of power. They also feature a built in USB 5V out port and a power off feature to conserve discharge. You can also use these batteries as an A/C adapter replacement for your devices so you can leave all your other A/C adapters behind. The brand new MFP-200 model can power laptops and tablets for up to 30 hours of additional run time per charge.