What Battery Does an Alienware M17xR4 Take?
Alienware M17xR4
These are the battery part numbers observed in hardware reports for this model.
Battery
Part numbers
DELL 5WP5W27A— seen in 1 reportDELL 5WP5WA6S— seen in 1 reportDELL 7XC9N21C— seen in 1 reportDELL 7XC9N28I— seen in 1 reportDELL 7XC9N32I— seen in 1 reportDELL D555173— seen in 1 report
Reports for this model and slot contain multiple part numbers. The reports do not establish that those parts are interchangeable.
- Manufacturer
- SDI, Simplo, Not Specified
- Capacities observed
- 93.2 Wh, 90 Wh, 79.9 Wh
- Voltage
- 11.10 V
- Chemistry
- Li-ion
Reports for this model and slot contain multiple capacities. Match the specifications on your existing battery and verify any change with the manufacturer.
Based on 6 reports.
Based on 6 independent hardware reports for the Alienware M17xR4.
- Match the exact part number printed on your current battery, or confirm a different number in the manufacturer’s service manual.
- Check voltage, connector, polarity, dimensions, and mounting points against the original battery.
- Make sure the seller names your exact laptop model or variant and offers a suitable return policy.
A part number appearing in these reports is an observation, not a guarantee that it fits every unit sold under the same model name.
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How we know
This answer is derived from 6 independent hardware reports for the Alienware M17xR4, of which 100% agree. We publish a model only when the reports agree overwhelmingly.
Check it yourself
On Windows, open a terminal and run powercfg /batteryreport, then open the generated HTML report — it names the battery’s model and part number. On Linux, run upower -i /org/freedesktop/UPower/devices/battery_BAT0. On any laptop, the surest method is the label printed on the battery itself, visible once you remove the back panel.
Other laptops reporting the same battery part number
These field reports contain an exact matching part number at the same observed voltage. That is useful evidence, but it does not guarantee the connector, dimensions, mounting points, firmware, or physical fit.
- Alienware M17xR3
DELL 7XC9N21C· 73.3 Wh / 90 Wh / 93.2 Wh · 11.10 V - Alienware 14
DELL D555173· 52 Wh / 64 Wh / 67 Wh · 11.10 V - Dell Inspiron 3537
DELL D555173· 28 Wh / 52 Wh / 59 Wh / 60 Wh · 11.10 V - Dell Inspiron 3737
DELL D555173· 28 Wh / 44 Wh / 60 Wh · 11.10 V - Dell Inspiron 5448
DELL D555173· 38 Wh / 38.4 Wh / 39.5 Wh / 54 Wh · 11.10 V - Dell Inspiron 5520
DELL D555173· 48 Wh / 48.8 Wh / 60 Wh / 97.7 Wh · 11.10 V - Dell Inspiron 5521
DELL D555173· 52 Wh / 57.7 Wh / 59 Wh / 60 Wh · 11.10 V - Dell Inspiron 5537
DELL D555173· 44 Wh / 59 Wh / 60 Wh / 63 Wh · 11.10 V
Battery health and replacement signs
Short runtime, unexpected shutdowns, or a large drop from design capacity can justify a closer check; a charging fault does not by itself prove the battery is worn out. See how to check battery health, judge replacement signs, or diagnose a charging problem.
Alienware M17xR4 battery questions
What battery part number was reported for the Alienware M17xR4?
Hardware reports contain “DELL 5WP5W27A”, “DELL 5WP5WA6S”, “DELL 7XC9N21C”, “DELL 7XC9N28I”, “DELL 7XC9N32I”, “DELL D555173”. Confirm the printed identifier and physical specifications on your installed battery before ordering.
What battery capacity was observed?
The reports contain 79.9 Wh, 90 Wh, 93.2 Wh. Multiple values can reflect variants or replacements, so match your own label rather than choosing capacity alone.
Does a matching part number guarantee fit?
No. Verify the exact laptop variant, voltage, connector, dimensions, mounting points, and manufacturer or seller documentation as well.
More Alienware laptops
Battery part numbers derived from linuxhw/DMI, licensed CC-BY-4.0.