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

FOCUSTEC

FOCUSTEC M5Y1K 14.8V 40Wh laptop battery Dell Inspiron 3551 3552 5758

SKU CH-8JZA-E7MZA

A 14.8 V 40 Wh lithium-ion replacement battery for Dell Inspiron 3000 and 5000 series notebooks

  • Battery TypeLithium-Ion
  • Ready for Dell Inspiron and Vostro models
  • 40 Wh capacity powers long sessions
  • 4-cell lithium-ion delivers stable 14.8 V
  • Up to 500 recharge cycles extends lifespan
  • CE, FCC and RoHS certified for safety

Replacement battery for Dell Inspiron 3000

This 14.8V 40Wh lithium-ion pack fits Dell Inspiron 15 3000 and 5000 series models including 3551, 3552, 5558 and 5758. It also supports Vostro 3458, 3558, 3459 and 3559 notebooks. The four-cell design delivers 2900mAh capacity for daily mobile work. Buyers needing higher capacity or a different voltage will not find those options here.

Upgrades worn Dell M5Y1K GXVJ3 WKRJ2 HD4JO KI85W

It directly replaces original Dell part numbers M5Y1K, GXVJ3, WKRJ2, HD4JO, KI85W, VN3NO and 451-BBMG when the old battery no longer holds a useful charge. The jump is worth it when runtime has dropped below half of the original 40Wh rating or the system shuts down unexpectedly. If the laptop requires a different form factor or connector, this unit will not fit.

Simple screw-access swap with safety certifications

Installation typically involves removing the bottom cover screws, disconnecting the old pack and connecting the new one in its place. The battery carries CE, FCC and RoHS certifications for electrical safety. Common issues include forgetting to disable the internal battery in BIOS before removal or misaligning the connector during reassembly. Users uncomfortable with case disassembly should seek professional help.

Highlights

  • Ready for Dell Inspiron and Vostro models
  • 40 Wh capacity powers long sessions
  • 4-cell lithium-ion delivers stable 14.8 V
  • Up to 500 recharge cycles extends lifespan
  • CE, FCC and RoHS certified for safety

Specifications

Battery TypeLithium-Ion

Questions about this item

Does the 14.8V 40Wh M5Y1K battery fit my Dell Inspiron 3551 without modification?

Yes. The battery is listed as compatible with Inspiron 3551 and 3552 models and uses the original Dell M5Y1K form factor, so it seats directly in the existing bay.

What is the correct order for connecting the 4-cell Li-ion pack during installation?

Align the connector key with the motherboard header, press straight down until the latch clicks, then secure the retention screw before closing the base cover.

After roughly 500 recharge cycles, will the 2900mAh capacity still be covered by the 12-month hassle-free warranty?

The warranty covers defects for 12 months from purchase; normal capacity loss after many cycles is expected wear, not a defect.

Also in this aisle

People compared these

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