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
Black rectangular lithium-ion laptop battery with label showing 11.4V 51WH

KingSener

KingSener 266J9 laptop battery 11.4V 51WH for Dell Inspiron 14 5490 G3 15 3590 3500 G5 15 5500 5505

SKU CH-7GAX-Q66TD MPN 266J9

Replacement lithium-ion battery, 11.4 V and 51 Wh, compatible with Dell Inspiron 14 5490, G3 15 3590 and 3500, and G5 15 5500 and 5505 models

  • Battery typeLithium-Ion
  • Battery voltage rating11.4 V
  • Battery capacity51WH
  • Product colorBlack
  • Product typeBattery
  • Compatible with51WH
  • 51WH capacity delivers extended runtime for demanding workloads
  • 4V lithium-ion chemistry matches original Dell specifications
  • Replaces OEM part numbers 266J9 0M4GWP M4GWP 0PN1VN PN1VN
  • Compatible with Inspiron 14 5490 and G3 G5 15 inch series
  • Brand new replacement battery backed by two year warranty

Replacement battery for select Dell laptops

This 51WH lithium-ion unit restores power to compatible Dell Inspiron 14 5490, G3 15 3590, G3 15 3500, G5 15 5500 and G5 15 5505 models. It operates at 11.4V and matches the original 266J9 form factor. The pack is brand new and built with cells manufactured in China.

Suits owners of the listed Dell models needing

Buyers whose laptop uses a different part number or voltage should look elsewhere. Systems outside the named series will not accept this battery. Installers uncomfortable with internal hardware replacement may prefer professional service.

11.4V 51WH capacity matches the original

This voltage and watt-hour rating determine whether the pack fits the power circuit and runtime expectations of the supported Dell models. Confirm the original battery shows 11.4V and 51WH before ordering.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $39.99
Pricier than about 71% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model name266J9
Part number266J9
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating11.4 V
Battery capacity51WH
Compatibility
Compatible with51WH

Questions about this item

Does the KingSener 266J9 battery require any additional hardware to install in my Dell laptop?

No extra hardware is needed; the 266J9 fits directly into the battery bay of compatible Dell Inspiron 14 5490, G3 15 3590, G3 15 3500, G5 15 5500 and G5 15 5505 models.

Will the 11.4V 51WH KingSener 266J9 work alongside the original Dell AC adapter I already use?

Yes, the 11.4V 51WH specification matches the original design voltage, so your existing Dell charger will charge the 266J9 normally.

How can I confirm the KingSener 266J9 is functioning correctly after I install it?

The laptop should power on without the charger, Windows will report the 51WH capacity, and the battery icon will show normal charge and discharge cycles.

More in Laptop Chargers & Batteries

Similar items