We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black laptop battery with label showing 11.1V 65Wh

myVolts

myVolts MR90Y 11.1V 65Wh laptop battery

SKU CH-0AXY-Q4AZT

11.1V 65Wh lithium-ion replacement powers compatible Dell Inspiron and Latitude models

  • Compatible with Inspiron 14 3421 and 15 3521
  • Fits Latitude 3440 and 3540 models
  • 6-cell lithium-ion delivers 65Wh capacity
  • Runs at 11.1V for stable power
  • Replaces OEM part numbers including MR90Y

Replacement Battery for Dell Inspiron and Latitude

The myVolts MR90Y is an 11.1V 65Wh lithium-ion battery built to match the original specifications for a wide range of Dell laptops. It serves as a direct replacement for part numbers including MR90Y, 312-1387, 312-1390, 312-1392, 312-1433 and 312-1437. The six-cell pack restores mobile power to compatible Inspiron 14, 15 and 17 models as well as Latitude 3440 and 3540 systems.

Six-Cell Pack Fits Existing Battery Bay

The battery slots into the standard internal compartment without adapters or cable changes. It draws charging current from the laptop’s own power circuitry, so no external charger or dock is required. Installing the pack frees the user from wall outlets and lets the notebook run on its original hardware platform.

For Owners of Listed Dell Models Needing a Fresh

This unit suits anyone whose Inspiron 3421, 3521, 3721, 3437, 3737, 5421, 5437, 5521, 5537, 5721, 5737 or Latitude 3440, 3540 no longer holds a useful charge. It is not for users with Dell models outside this compatibility list, nor for those requiring a higher-capacity or extended-life alternative.

Highlights

  • Compatible with Inspiron 14 3421 and 15 3521
  • Fits Latitude 3440 and 3540 models
  • 6-cell lithium-ion delivers 65Wh capacity
  • Runs at 11.1V for stable power
  • Replaces OEM part numbers including MR90Y

Specifications

No published specifications for this item yet.

Questions about this item

How long will the 11.1 V 65 Wh pack run before it hits its thermal limit under sustained load?

The battery is rated at 11.1 V and 65 Wh using a 6-cell lithium-ion design; no thermal-throttle threshold is published by the manufacturer.

What noise, heat or power draw should I expect when the battery runs all day?

The pack itself has no moving parts, so it produces no audible noise; heat output and power draw depend on the laptop's workload and charging circuit.

Which Dell laptops must I already own for this MR90Y to work?

Compatible models include Inspiron 14 3421, 3437, 3521, 3721, 3737, 5421, 5437, 5521, 5537, 5721, 5737 and Latitude 3440, 3540.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.