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Rectangular black lithium-ion laptop battery with label showing 42Wh 11.4V

Beisite

Beisite 7CJRC laptop battery 42Wh 11.4V for Latitude E7270 E7470

SKU CH-YWHQ-7P9SS

Replacement lithium-ion battery delivering 42 Wh at 11.4 V for Latitude E7270 and E7470 series laptops

  • ColorBlack
  • TypeBattery
  • CompatibilityFor Latidude 12 E7270 E7470 Series
  • Battery TypeLithium-Ion
  • Battery Voltage11.4V
  • Battery Capacity42Wh
  • 42 Wh capacity keeps your Latitude running longer
  • 4 V lithium-ion cell matches original voltage spec
  • Replaces part numbers 7CJRC, 21X15, 31CP5/57/81
  • Fits Latitude E7270 and E7470 series laptops
  • 12-month warranty backs the new battery

Replacement battery for Latitude E7270 E7470

This 42Wh lithium-ion unit operates at 11.4V and replaces part numbers 7CJRC, 21X15 and 31CP5/57/81. It is built for Latitude E7270 and E7470 series laptops that require the original 7CJRC form factor. Buyers whose machines use a different voltage or connector will not be served by this pack.

Thermals noise and power in daily use

The cell chemistry runs at the rated 11.4V without active cooling, so it adds no audible noise to the system. Normal discharge follows the laptop's own power management, drawing only what the platform requests. No external adapter or fan is involved, so thermal output stays within the chassis design limits.

Behaviour under sustained load

During extended workloads the pack delivers its 42Wh capacity at a steady 11.4V until the firmware initiates a controlled shutdown. Voltage sag is managed by the internal protection circuit rather than by throttling the laptop. Users who need longer runtime than 42Wh provides should look for a higher-capacity alternative.

Highlights

  • 42 Wh capacity keeps your Latitude running longer
  • 4 V lithium-ion cell matches original voltage spec
  • Replaces part numbers 7CJRC, 21X15, 31CP5/57/81
  • Fits Latitude E7270 and E7470 series laptops
  • 12-month warranty backs the new battery

Specifications

Brand7CJRC
Model7CJRC
Part Number31CP5/57/81
ColorBlack
TypeBattery
CompatibilityFor Latidude 12 E7270 E7470 Series
Battery TypeLithium-Ion
Battery Voltage11.4V
Battery Capacity42Wh

Questions about this item

How is the 7CJRC battery installed in a Latitude E7270, and which step is often missed?

Power off the laptop, remove the base screws, detach the old pack, connect the new 11.4 V 42 Wh unit, then re-secure the base; the step often missed is reconnecting the internal cable before closing the case.

What replacement will the 31CP5/57/81 pack need after extended use?

The lithium-ion cells degrade over time; once runtime falls below your needs, replace the entire 42 Wh pack with another 7CJRC or 21X15 compatible unit.

What limit appears first during sustained load on this 11.4 V battery?

The 42 Wh capacity sets the runtime ceiling; under heavy draw the pack will reach its depth-of-discharge limit and trigger shutdown before any thermal threshold.

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