Hybrid cars are well - known for their efficient engines, battery operation in traffic, lightweight manufacturing materials, automatic stop / start engine, regenerative braking, and compact lithium batteries. (buyautoinsurance.com)
3 AA batteries are required for battery operation (sold separately). (evenflofeeding.com)
The Levana Jena claims to offer the longest battery operation among all the baby monitors. (lovingmomsdiary.com)