Löwenstein / Weinmann WM27999 39.6V 3.1Ah 121Wh Li-Ion Medical Ventilator Battery Used

The Löwenstein (Weinmann) WM27999 is a genuine rechargeable Lithium-Ion medical battery designed for compatible VENTIlogic LS and selected prisma VENT ventilators. Delivering 39.6V, 3.1Ah (121Wh), it provides reliable backup power for professional respiratory equipment. This listing is for the battery only. Charger, user manual and any additional accessories are not included. :contentReference[oaicite:0]{index=0}

Key Features

  • Genuine Löwenstein / Weinmann Medical Battery
  • Part Number: WM27999
  • Compatible with VENTIlogic LS and selected prisma VENT devices
  • 39.6V Rechargeable Lithium-Ion Battery
  • 3.1Ah Capacity
  • 121Wh Energy Rating
  • Integrated Protection Circuit
  • Medical Grade Battery Pack

Technical Specifications

Brand Löwenstein Medical (Weinmann)
Part Number WM27999
Battery Type Rechargeable Lithium-Ion
Nominal Voltage 39.6V
Capacity 3.1Ah (3100mAh)
Energy 121Wh
Battery Chemistry Lithium-Ion
Maximum Charge Voltage 46.2V
Maximum Charge Current 0.8A
Weight Approx. 550g
Dimensions Approx. 133 × 54 × 37 mm

What's Included

  • WM27999 Battery Pack

What's Not Included

  • Battery Charger
  • Ventilator Device
  • User Manual
  • Original Packaging
  • Any Other Accessories

Condition

Used – Professionally tested and fully functional. The battery may show minor cosmetic signs of previous use including light scratches or scuffs but these do not affect normal operation.

NOTE: As with all used rechargeable batteries, some degree of battery wear is normal. If you notice any unexpected battery degradation or performance issues, please contact us within 3 days of delivery with details of the issue. Please do not open a return request before contacting us, as our support team will work with you to provide a quick resolution.

Returns

  • 30-Day Returns – Change of mind returns accepted provided the item is returned in the same condition.
  • Please Contact Us First – If you experience any issues, please contact us before opening a return request.
  • Tamper Seal Policy – Returns may not be accepted if security or tamper seals have been removed or damaged.

Please ensure compatibility before purchasing. This listing is for the WM27999 battery only. Charger, ventilator, user manual and any other accessories are not included unless clearly shown in the photographs.