Most monitor systems have an electrical cord or nonrechargeable battery option for the unit in the baby's room. And receivers typically have an electrical cord or rechargeable batteries. Some models are notorious for burning through batteries at an alarming rate. Parents have complained that even monitors sold with rechargeable batteries built in can drain quickly. Our Baby Monitor Ratings , available to subscribers, include an evaluation of battery life. Subscribers can also check out our battery report and Ratings (for subscribers).
The longest battery life for the dedicated products in our review is the Levana Lila, which ran for 12.75 hours in full use mode. The manufacturer claims this unit will work up to 72 hours in power saving mode, but we only tested the monitors in full use. The Infant Optics DXR-8 came in second place with a shorter run time of closer to 11.5 hours. The Motorola MBP36S earned the lowest score for battery life with a runtime just under 7 hours. While not necessarily a deal breaker, there are plenty of other reasons to dislike the Motorola MBP36S, and the battery life is just a small part of a disappointing overall picture (no pun intended).
If you sleep in the same room as your baby or live in a small enough space that you can always hear or see what your baby is up to, you probably don’t need a monitor. Otherwise, most parents enjoy the convenience a baby monitor provides—instead of needing to stay close to the nursery or constantly checking on your child, you’re free to rest, catch up on Netflix or get things done around the house during naptime. Monitors can also double as a nanny cam to keep an eye on your child and their caretaker.