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Rectangular white lithium-ion battery pack with black label

Beisite

Beisite BA-400 1400-2010-4 14.54V 3.5Ah 50.9Wh battery

SKU CH-DD9X-V4CVB

A 14.54V lithium-ion replacement battery delivering 3.5Ah and 50.9Wh for Inogen G4 and OxyGo FIT portable oxygen concentrators

  • ColorBlack
  • TypeBattery
  • Compatibilityfor Inogen G4 portable oxygen concentrator OxyGo FIT 1400-20
  • Battery TypeLithium-Ion
  • Battery Voltage14.54V
  • Battery Capacity3.5A h/ 50.9Wh
  • Reliable power for Inogen G4 and OxyGo FIT
  • 54V lithium-ion delivers stable voltage
  • 5Ah capacity supports extended portable use
  • 9Wh energy rating meets device requirements
  • Replaces part numbers 1400-2020-4 BA-400 4INR19/66

Replacement Battery for Inogen G4

This lithium-ion battery replaces the original power source for the Inogen G4 portable oxygen concentrator and the OxyGo FIT 1400-2030. It delivers a nominal voltage of 14.54V and a capacity of 3.5Ah for 50.9Wh of energy storage. The pack is supplied new and ready to install. It matches part numbers 1400-2020-4 and 4INR19/66.

Direct Fit for Portable Concentrators

The battery slots into the device without adapters or cable changes, freeing the user from wall power for mobile use. It is built to the same 14.54V specification the concentrator expects, so no voltage conversion is required. The white-coloured casing aligns with the original equipment design. One unit is included in the package.

Steady Output During Extended Sessions

Lithium-ion chemistry maintains a stable 14.54V through most of the discharge curve, supporting consistent concentrator operation over long periods. The 50.9Wh capacity is sized for multi-hour runtime between charges. Performance stays predictable under continuous load rather than dropping off after a short burst. The pack is intended for daily cycling in medical use.

Highlights

  • Reliable power for Inogen G4 and OxyGo FIT
  • 54V lithium-ion delivers stable voltage
  • 5Ah capacity supports extended portable use
  • 9Wh energy rating meets device requirements
  • Replaces part numbers 1400-2020-4 BA-400 4INR19/66

Specifications

BrandBA-400 / 1400-2010-4
ModelBA-400 / 1400-2010-4
Part NumberBA-400 / 1400-2010-4
ColorBlack
TypeBattery
Compatibilityfor Inogen G4 portable oxygen concentrator OxyGo FIT 1400-2000 1400-2030
Battery TypeLithium-Ion
Battery Voltage14.54V
Battery Capacity3.5A h/ 50.9Wh

Questions about this item

How long will the 50.9Wh capacity last during continuous Inogen G4 use?

Runtime depends on the concentrator flow setting; the 3.5Ah lithium-ion cell delivers 50.9Wh total energy.

Does the BA-400 get hot or noisy during all-day oxygen therapy?

The lithium-ion pack has no moving parts and runs silently; warmth under load is normal for this chemistry.

Which Inogen G4 part numbers does this 14.54V battery replace?

It replaces part numbers 1400-2020-4, BA-400 and 4INR19/66 for the Inogen G4 and OxyGo FIT models.

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