Dell 4R084 modular bay battery

For some laptop systems, the laptop manufacturers, such as Fujitsu & Dell, offer a battery that can be used in the modular bay (optical drive media bay such as DVD/CD drive bay) to extend your notebook’s battery life over the single battery configuration. This enables the use of two batteries for a laptop and potentially extends the available run time.

If a secondary modular bay battery is installed, it will be used first, and then the system automatically switches to the primary battery. This is a deliberate design to allow the most amount of run time to remain in the primary battery in case the modular bay battery is removed and replaced with an optical drive.

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This is a 48 WHr 6-Cell Secondary Modular Bay Battery for Dell.

Dell 4R084 Secondary Modular Bay Battery

Product Specifications:

Part#: Dell 4R084 (Secondary Modular Bay Battery)
Rating: 11.1V
Capacity: 48 Whr
Size: 5.17″ x 5.66″ x 0.57″
Color: Grey
Technology: Lithium-Ion
Dell Part Numbers: 312-0102, 312-0085, 4R084, 5P171, 0M787, 7P806, 9X001, 312-0069, 312-0122, 310-4345, 310-9124.

Compatible Models
Dell Inspiron 500m	Dell Inspiron 600m	Dell Inspiron 8500
Dell Inspiron 8600	Dell Latitude ATG D620	Dell Latitude D500
Dell Latitude D510	Dell Latitude D520	Dell Latitude D600
Dell Latitude D610	Dell Latitude D620	Dell Latitude D630
Dell Latitude D630c	Dell Latitude D630N	Dell Latitude D631
Dell Latitude D631N	Dell Latitude D800	Dell Latitude D810
Dell Latitude D820	Dell Latitude D830	Dell Latitude D830N
Dell Precision M20	Dell Precision M2300	Dell Precision M4300
Dell Precision M60	Dell Precision M65	Dell Precision M70