Specification: Battery type: Li-ion Voltage: 14.8 (Compatible with 14.4V) Capacity: 40Wh Cell: 4cells recharge cycles： 500 Operation time: Around 1.5-2.5 hours Compatible Models：( Ctrl + F for fast search ur laptop model) For Dell Inspiron 14-3421 Series For Dell Inspiron 14 Series For Dell 14-3421 Series For Dell 14-3437 Series For Dell 14-5421 Series For Dell 14-N3421 Series For Dell 14-N5421 Series For Dell 14R Series For Dell 14R-3421 Series For Dell Inspiron 15 Series For Dell 15-3521 Series For Dell 15-3537 Series For Dell 15R-5521 Series For Dell 17-3721 Series For Dell 17R Series For Dell 17R-5737 Series For Dell 17R-N3721 Series For Dell 17R-N3737 Series For Dell 17R-N5721 Series For Dell 17R-N5737 Series For Dell 3421 Series For Dell 3437 Series For Dell N5521 Series etc.
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