Item description from the seller

Specifications:

Condition: Brand New , 'A' grade cells,100% Compatible!

Battery type: Li-ion Battery

Voltage: 14.8V

Capacity: 40Wh

Number of Battery Cells: 4

Certification: CE FCC RoHS

Color: black as pictures

Operation time: approx 1.5-3 hours

Package including: battery (in packing carton box)

Compatible Model:

For Dell Inspiron 14-3421 Series

For Dell Inspiron 14 Series

For Dell 14-3421 Series

For Dell 14-3437 Series

For Dell 14R Series

For Dell 14R-3421 Series

For Dell Inspiron 15 Series

For Dell 15-3521 Series

For Dell 17R Series

For Dell 17R-5737 Series

For Dell 17R-N3721 Series

For Dell 3421 Series

For Dell 3437 Series

For Dell N5521 Series

For Dell N5537 Series

For Dell Latitude 3440 Series

For Dell Latitude 3540 Series

For Dell Latitude E3440 Series

For Dell Latitude E3540 Series

Compatible Part Numbers:

0MF69   312-1390   49VTP

68DTP   6KP1N    8TT5W

FW1MN   MK1R0   PVJ7J

V8VNT   XCMRD   VR7HM

X29KD   YGMTN   24DRM

312-1392  4DMNG  6HY59

6XH00   9K1VP   G019Y

MR90Y  T1G4M  312-1433

4WY7C  6K73M  8RT13

DJ9W6  G35K4  N121Y

V1YJ7  W6XNM  XRDW2

1. Do not unplug the power while charging.
2. When the battery is low to 10% during normal operation, it must be shut down or recharged. Do not discharge the battery to 0%, as this can easily damage the battery and accelerate its decay.
3. Avoid artificial impacts, disassembly, falling, heating, or short circuits.
4. Use dedicated equipment for charging.
5. Try to avoid using in environments that are too hot or too cold.

When the device charges the battery for the first time, the unstable voltage and current may cause the device to stop charging the battery when it is half charged (sometimes more or less). If this happens, there is no need to worry, just remove the battery from the device and charge it again. The new battery charged for the first time may require several repeated processes, but please rest assured that this is a normal phenomenon.

1. We recommend that the first charge should not be less than 12 hours. Usually, new batteries are not fully charged and must be charged before use. To achieve the highest efficiency, the battery needs to be cycled three to four times before use or after a period of non-use.

2. Sometimes, when charging a new battery for the first time (after 10-15 minutes of charging), the device indicator light may indicate that the battery is fully charged. This is a normal phenomenon for "charging batteries", and the battery just needs to be removed from the device and recharged.

3. Regular charging and discharging is recommended. It is recommended to do this once a month to facilitate the system's measurement of battery capacity. For example, use up to 20% and then recharge to full.

Note:

1. Please check your battery model before placing an order.

2. The battery must be run out and FULLY charged before FIRST use.

3. The battery is stored in a cool and dry place.

4. Do not Separation, extrusion, and impact.

5. Keep away from children.