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 4-cell lithium-ion laptop battery with label showing 38Wh 14.8V

TAURKENAM

TAURKENAM 38Wh 4-Cell Li-ion Laptop Battery OA03 OA04

SKU CH-SZ84-DK11W

A 38 Wh four-cell lithium-ion pack replaces HP OA03 and OA04 batteries across 15-series, 240 G2, CQ14 and CQ15 notebooks

  • Battery TypeLithium-Ion
  • 38Wh capacity powers extended sessions
  • 4-cell lithium-ion design delivers stable 14.8V output
  • CE and FCC certified for safe operation
  • Replaces HP spare numbers 751906-541, 746641-001, 740715-001, 746458-421
  • Fits HP 240 G2, 250 G3, CQ14, CQ15 and 15-series notebooks

38Wh 4-Cell Li-ion Battery for HP OA03 OA04

This replacement battery delivers a capacity of 2600mAh at 14.8V using four lithium-ion cells. It is designed for HP notebooks including the 15-r and 15-g series as well as 240 G2, CQ14 and CQ15 models. The part matches original spare numbers such as 740715001, 746641001 and 746458-421. Buyers with laptops outside the listed compatibility range should verify their part number before ordering.

CE and FCC Certified Safety Standards

The unit carries CE and FCC certification, confirming it meets recognised electrical safety and electromagnetic compatibility requirements. These certifications mean the pack has been tested for overcharge, short-circuit and thermal protection under defined laboratory conditions. No additional software or driver installation is required; the battery communicates with the notebook firmware through the standard smart-battery interface already present in the supported HP models.

Practical Limits of the Smart-Battery Interface

Runtime depends on the notebook power profile, screen brightness and workload, so the 38Wh rating represents a maximum stored energy figure rather than a guaranteed usage time. The four-cell configuration fits the original chassis without modification but does not increase capacity beyond the factory specification. Systems that demand higher wattage under sustained load may trigger the battery protection circuit, causing an automatic shutdown to preserve cell health.

Highlights

  • 38Wh capacity powers extended sessions
  • 4-cell lithium-ion design delivers stable 14.8V output
  • CE and FCC certified for safe operation
  • Replaces HP spare numbers 751906-541, 746641-001, 740715-001, 746458-421
  • Fits HP 240 G2, 250 G3, CQ14, CQ15 and 15-series notebooks

Specifications

Battery TypeLithium-Ion

Questions about this item

How many charge cycles before the 4-cell Li-ion pack needs replacing?

The 38 Wh, 2600 mAh battery is rated for typical Li-ion cycle life; expect replacement after several hundred full cycles.

What limits runtime first during a continuous load — capacity or voltage drop?

The 38 Wh capacity sets the hard runtime ceiling; voltage remains at 14.8 V until the pack nears empty.

Does the battery get hot or draw extra power when the laptop runs all day?

Normal operation stays within the 14.8 V design envelope; no additional heat or power draw beyond standard Li-ion behaviour.

Also in this aisle

People compared these

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