Kastar 14.4V 3500mAh Ni-MH Replacement Battery For IRobot Roomba 500 Series (510, 540, 550, 560, 650, 780, R3)

Is your Roomba dying halfway through cleaning?

Grab this Kastar replacement battery and get it back in action.

It's a 14.4V, 3500mAh Ni-MH battery, brand new and in its original packaging.

It's compatible with a bunch of Roomba 500 series models, including the 510, 530, 540, 550, 560, 570, 580, 650, 780, and R3.

So, if you've got one of those, you're good.

It comes in that classic yellow Kastar color.

The seller offers free shipping with 24-hour dispatch and 1-6 day delivery, which is pretty quick.

Plus, there's an 18-month warranty, so you're covered.

Just a heads up for California folks: it contains DEHP, which the state warns about.

But for everyone else, it's a solid, high-capacity battery to keep your robot vacuum running.