Lapgrade Battery for Dell Latitude 3440 3540 E3440 SeriesBattery Voltage: 11. 1V, Battery Capacity: 4000mAh, No of Cell : 6 Built in circuit protection for device safety 1 year replacement warranty. A guided assurance on compatibility Get confirmation on chat support within seconds 15 days easy replacement BIS certified product ensures standardization and quality of product

Li-ion battery (internal)

cell Type: Polymer

Capacity: 2750mAh

voltage: 11

4000mAh/44Wh

Battery capacity: 37Wh

Battery capacity: 2000mAh

Voltage 11

please check the compatibility as there are two batteries that look same but are different

5amp 50-60hz

Thick Color box packing & anti-static packing of battery ensures safety of product

Voltage: 16