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 connector edge

Beisite

Beisite C41N1903 66Wh 15.4V laptop battery for Asus ExpertBook B9

SKU CH-SS84-CAJYT

A 66Wh 15.4V lithium-ion replacement battery compatible with numerous Asus ExpertBook B9 and B5302 models

  • ColorBlack
  • TypeBattery
  • Battery TypeLithium-Ion
  • 66Wh capacity powers long work sessions
  • 4V lithium-ion chemistry matches original spec
  • Replaces C41N1903, C41P0J1 and 0B200-03560100 part numbers
  • Fits ExpertBook B9, B9450FA and B9400CEA series models
  • Brand-new condition with 12-month supplier warranty

Replacement battery for Asus ExpertBook B9

This 15.4V lithium-ion pack replaces the original C41N1903 cell in compatible ExpertBook B9 and B5302 models. It restores mobile power for professionals who rely on the ultra-light chassis for daily work away from a desk.

66Wh capacity and thermal behaviour

The 66Wh rating delivers the same energy budget the laptop was designed around, so typical office loads run at the expected temperatures and fan curves. No additional heat or noise is introduced beyond the original specification.

Part-number cross-reference included

The label lists C41N1903, C41P0J1 and 0B200-03560100, letting technicians verify the match before installation. Buyers needing a different voltage, a higher capacity or a battery for another laptop series will not be served by this unit.

Highlights

  • 66Wh capacity powers long work sessions
  • 4V lithium-ion chemistry matches original spec
  • Replaces C41N1903, C41P0J1 and 0B200-03560100 part numbers
  • Fits ExpertBook B9, B9450FA and B9400CEA series models
  • Brand-new condition with 12-month supplier warranty

Specifications

BrandC41N1903
ModelC41N1903
ColorBlack
TypeBattery
Battery TypeLithium-Ion

Questions about this item

How do I install the C41N1903 battery in my ExpertBook B9 and what step is often missed?

Power off the laptop, remove the bottom case screws, disconnect the old pack from the motherboard connector, fit the new 15.4V 66Wh unit, reconnect the cable firmly, then reassemble; the step most people miss is fully seating the connector before screwing the case back

What maintenance or replacement will this 66Wh lithium-ion pack need later?

No routine maintenance is required; replace the pack when runtime drops noticeably below the original 66Wh capacity

What limit appears first during sustained use of this 15.4V 66Wh battery?

The pack will hit its 66Wh energy limit first, after which the laptop must recharge before continuing work

Also in this aisle

People compared these

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