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Rectangular black laptop battery with label showing 40Wh 14.8V 4-cell lithium-ion

Junchi

Junchi XCMRD 40Wh 14.8V 4-Cell laptop battery

SKU CH-PMQC-AM8PY

A 40Wh 14.8V four-cell lithium-ion replacement battery for Dell Inspiron and Latitude models from 2013 to 2018

  • Battery TypeLithium-Ion
  • 40Wh capacity supports extended work sessions away from mains power
  • 4-cell lithium-ion design rated for up to 500 recharge cycles
  • 8V output matches original Dell specifications for safe operation
  • CE, UL and FCC certified with built-in circuit protection
  • Fits Dell Inspiron 14, 15, 17, Latitude 3440, 3540 and Vostro 2421, 2521 models

40Wh 14.8V 4-Cell laptop battery

This lithium-ion replacement battery provides 40 watt-hours at 14.8 volts across four cells. It is designed for Dell Inspiron 14, 15 and 17 series models as well as Latitude 3440 and 3540 and Vostro 2421 and 2521 series released between 2013 and 2018. The unit is new and carries CE, UL and FCC safety certifications with built-in circuit protection.

Suits owners of listed Dell models only

Buyers with a compatible Dell Inspiron 14 3421, 3437, 14R, 5421, 5437, Inspiron 15 3521, 3531, 3537, 3541, 3542, 3543, 15R, 5521, 5537, Inspiron 17 3721, 3737, 5749, 17R, 5721, 5737, Latitude 3440, 3540, E3440, E3540 or Vostro 2421, 2521 will find a direct fit. Users of any other laptop brand, newer Dell releases or models not in the compatibility list must look elsewhere because the connector and voltage will not match.

40Wh capacity decides runtime

The 40Wh rating determines how long the battery can power the notebook between charges. Class A cells are rated for up to 500 recharge cycles over the battery life. If your workload demands more runtime than 40Wh can deliver, this part will not meet the requirement.

Highlights

  • 40Wh capacity supports extended work sessions away from mains power
  • 4-cell lithium-ion design rated for up to 500 recharge cycles
  • 8V output matches original Dell specifications for safe operation
  • CE, UL and FCC certified with built-in circuit protection
  • Fits Dell Inspiron 14, 15, 17, Latitude 3440, 3540 and Vostro 2421, 2521 models

Specifications

Battery TypeLithium-Ion

Questions about this item

Does the 14.8V 40Wh pack fit the Dell Inspiron 15 3521 without modification?

Yes, the battery is built to the exact form factor used by the Inspiron 15 3521 and the other listed models, so it slides into the existing bay with no extra brackets or adapters.

What is the correct sequence to install the 4-cell lithium-ion unit and which step do users most often skip?

Power off the laptop, disconnect the AC adapter, remove the old pack, insert the new one until the latch clicks, then reconnect AC power and let it charge to 100 % before first use — the skipped step is that full initial charge.

After roughly 500 recharge cycles the 2700mAh cells will degrade — what replacement does the manufacturer recommend?

The same 14.8V 40Wh 4-cell lithium-ion pack (part reference XCMRD) is the direct replacement; swap it using the identical removal and installation procedure.

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