Note : 14.4V and 14.8V are compatible, they are in common use.

The 14.4V 4500mAh(12 cells) Irobot ROOMBA 551 battery is made of high-quality lithium-ion battery cells, which has been tested to be brand new and totally compatible with the original manufacturer specifications, meets or even exceeds the original battery performance. With high-quality battery cells and materials, your cordless vacuum cleaner will run longer and more secure. Moreover, this battery has no "memory effect" and you don’t need to discharge before each charge. It is more convenient for you to use our replacement Irobot ROOMBA 551 batteries.

Our Irobot ROOMBA 551 cordless vacuum cleaner battery which we design is in strict accordance with the highest control standards. It carries with a smart interior circuit board that provides battery-unbalanced-shut-off protection, thermal runaway protection, overcharged protection, over-discharged-shut-off protection, and high/low-temperature-shut-off protection. Irobot ROOMBA 551 vacuum cleaner battery is made of environmentally friendly materials, without lead and mercury. It is certified as a safe and reliable product through a series of rigorous tests on the Irobot examine system.

Thank you for shopping the Irobot ROOMBA 551 replacement battery at LaptopBatteryDirect.net. Our batteries are packed in cartons with anti-static bags and anti-pressure sponges to effectively protect the batteries in transit. We have a rigorous inspection process to ensure that your order (e.g. Irobot ROOMBA 551 battery) is perfectly functional before shipping to you. Before placing an order, you'd better look at our battery from following pictures and check if it is the same as your original one. Please make sure that you pick out the correct battery to avoid ordering mistakenly.