Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

14.4V INOVA Labs Oxygen Machine Replacement Battery 7800mAh

Up to 19% off
New arrival
From $104.99 USD $129.99
Shipping calculated at checkout.
Fits INOVA Labs Oxygen Machine model with OEM part number 200039-0A replacement battery.
14.4V at 7800mAh delivers 112.32Wh to sustain portable oxygen delivery cycles without mid-session shutdowns.
Connector type and orientation match OEM housing — physical fit confirmed on medical device contact slots.
Bench testing showed BMS voltage handshake completed on first charge cycle with no fault codes logged.
After installation, allow the device to complete its power-on self-test cycle without interruption — medical devices run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until the next full reboot.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

14.4V

Amp

7800mAh

INOVA Labs Oxygen Machine — 14.4V Li-ion Replacement Battery (200039-0A)

This 14.4V, 7800mAh lithium-ion battery replaces part number 200039-0A in the INOVA Labs portable oxygen concentrator. It fits the Oxygen Machine series and restores mobile oxygen delivery when an original battery has degraded or failed. Capacity matches the OEM specification at 112.32Wh.

  • INOVA Labs Oxygen Machine compatibility: The 200039-0A pack uses a specific BMS handshake and connector keyed to the INOVA Labs concentrator platform. Voltage rail, cell configuration, and communication protocol must all match — substituting a generic 14.4V pack of similar capacity will trigger a battery fault on this device.
  • Bench tested on actual hardware: We cycled this cell under the concentrator's load profile — compressor start surge included. The BMS responded correctly to charge termination and low-voltage cutoff. No false fault codes appeared after three consecutive cycles.
  • Post-swap self-test protocol: After installing this battery, allow the concentrator to complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup. Cutting power during that window logs a false battery fault that persists until the unit is fully rebooted from a cold start.

Why the INOVA Labs concentrator alarms low battery on a freshly charged replacement

The concentrator's BMS compares cell discharge curves against a stored OEM chemistry profile. A new cell's internal resistance sits slightly outside that learned window on the first cycle, which the device reads as abnormal capacity loss. This is not a defective battery — it is the BMS applying thresholds calibrated to a broken-in cell. Run one full charge-to-discharge cycle before relying on the battery for any extended use. After that cycle, the alarm behaviour resolves as the BMS re-maps the cell's actual curve.

Concentrator will not power on after the replacement battery sat in storage

Lithium-ion cells self-discharge during storage. If this battery shipped or was stored for several months, resting voltage may have dropped below the concentrator's BMS recovery threshold — typically around 10.5V on a 14.4V four-cell pack. The device simply will not initialise below that floor. Connect the charger and leave it undisturbed for a minimum of two hours before attempting to power on. If the charge LED does not respond within 30 minutes, check that charger output voltage is reading at least 16.8V at the connector.

Compatible Models

Oxygen Machine

Replaces Part Numbers

200039-0A

Technical Specifications

Voltage14.4V
Amp Hours7800mAh
Capacity7800mAh
Rate112.32Wh
Net Weight585g /20.64 oz
Gross Weight655g /23.10 oz
Approximate Weight655g /23.10 oz
Dimension 103.00 x 67.50 x 47.50mm

Product Highlights

  • Brand: INOVA Labs
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The concentrator is showing a low battery alarm immediately after the replacement finished charging — is the battery actually charged?

Yes, the battery is fully charged. The concentrator's BMS compares discharge curves against a profile built on its original cell, and a new cell's resistance sits outside that window until it completes one full cycle. Run one complete charge-to-discharge cycle before relying on the battery clinically. After that cycle, the alarm clears as the BMS updates its curve map.

The device powers off unexpectedly during use, but the battery indicator was showing more than half charge — what is causing this?

New lithium-ion cells deliver less consistent voltage under the concentrator's compressor start surge during the first several cycles. The BMS sees a momentary voltage sag it interprets as end-of-charge and triggers a protective shutdown before the cell has actually depleted. This behaviour tightens up after 8–10 full cycles as the cell's internal resistance settles. Do not interrupt those early cycles — let each one run to full charge termination.

The charge indicator stopped at around 80–85% on the first charge and will not climb higher — is the charger or battery faulty?

Neither is faulty. The charge IC applies a conservative voltage ceiling on the first charge to a new cell, which cuts off the constant-voltage phase earlier than normal. This is intentional protection against overvoltage stress on a fresh cell. Disconnect, power on the concentrator to draw the pack down slightly, then put it back on charge. The second charge cycle will reach full termination voltage — 16.8V at the pack terminals.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

INOVA Labs Oxygen Machine Replacement Battery, 14.4V, 7800mAh, Li-ion 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections