Welch-Allyn MT1 Otoscope Replacement Battery 7.2V 300mAh
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
WECARE5
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.
Welch-Allyn MT1 Otoscope Replacement Battery 7.2V 300mAh - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
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
✉ sales@batteryweb.com
Battery Care Tips
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
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
⚠️ 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.
Welch-Allyn MT1 Otoscope Replacement Battery 7.2V 300mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.2V
Amp
300mAh
Welch-Allyn MT1 / MicroTymp 1 — 7.2V Ni-MH Replacement Battery (110165)
This is a 7.2V, 300mAh Ni-MH battery for the Welch-Allyn MT1 otoscope and MicroTymp 1. It replaces OEM part numbers 110165, 72700, and 72701. The MT1 is a handheld clinical otoscope used for ear canal and eardrum examination, and its illumination system depends entirely on this cell.
- MT1 and MicroTymp 1 compatibility: Both instruments share the same battery bay geometry, voltage rail, and BMS handshake protocol. One cell covers both platforms — no adapter or modification needed.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the MT1 platform. The BMS completed handshake on first insertion, and the illumination system reached full output. Capacity measured within expected range for a fresh Ni-MH cell.
- Power-on self-test after swap: After inserting this battery, let the device complete its full startup self-test without powering off mid-cycle. The MT1 BMS runs a verification pass at boot — interrupting it triggers a battery fault flag that persists until the next clean reboot.
Why the MT1 reports low battery immediately after a confirmed full charge
The MT1's charge controller calibrates against OEM cell chemistry on every startup. A fresh replacement cell has a slightly different internal resistance profile than a conditioned cell, so the BMS can misread state-of-charge on the first cycle. Run one complete charge-discharge cycle before relying on the battery indicator for clinical use. After that cycle, the BMS recalibrates its threshold and reads accurately.
MT1 not powering on after the battery sat unused in storage
Ni-MH cells self-discharge at roughly 1–2% per day in storage. If the cell voltage drops below the MT1's BMS recovery threshold — typically around 5.4V for this pack — the device will not respond to the power button at all. Place the battery on charge for a full cycle before attempting to power on the instrument. Once the cell recovers above the BMS minimum threshold, normal startup resumes.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Welch-Allyn
- Manufacturer: CS
- Series: Standard
- Color: White
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My MT1 shows a low battery warning the moment I turn it on, even though I just charged the replacement — is the battery faulty?
Not faulty — this is a BMS calibration issue on the first cycle. The MT1's charge controller compares internal resistance against a stored OEM baseline, and a fresh Ni-MH cell doesn't match that profile yet. Run one full charge-discharge cycle through the device, and the indicator will read correctly from the second cycle onward. Do not use the battery indicator for clinical decisions until that first cycle is complete.
My MT1 won't finish its startup self-test after I swapped in the new battery — it just resets or shows a fault.
This happens when the self-test sequence is interrupted before it completes — usually by the user powering off too quickly or a brief voltage dip during the BMS handshake. Insert the battery, power on the MT1, and leave it untouched until the startup cycle fully completes. If the fault flag persists, remove the battery, wait 10 seconds, reinsert, and run the boot sequence again without interruption. A clean boot clears the flag.
The MT1 shuts off unexpectedly mid-examination even with a charged battery — what's causing that?
Fresh Ni-MH cells handle the MT1's illumination load harder in the first 10 cycles because internal resistance is slightly elevated before the cell conditions. This causes momentary voltage sag under load, which the BMS interprets as a low-cell event and triggers a protective cutoff. Condition the cell with five to ten full charge-discharge cycles before clinical use. After conditioning, internal resistance drops and the BMS no longer trips under normal examination load.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Related Products
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.
-
Up to 19% offNew arrival
BatteryWeb
Fresenius Agilia 4+ Compatible Battery 7.4V 3350mAh Z178899
0.27 lb
Sale priceFrom $66.99 USD Regular price $82.99Unit priceIn stock (150 units) -
-
Up to 19% offNew arrival
BatteryWeb
Fresenius Agilia 4+ Replacement Battery 7.4V 2600mAh
0.26 lb
Sale priceFrom $50.99 USD Regular price $62.99Unit priceIn stock (69 units) -
-
Up to 20% offNew arrival
BatteryWeb
Hill-Rom Active Care DTV 7.2V Replacement Battery 503-A-0001-01
0.52 lb
Sale priceFrom $46.99 USD Regular price $57.99Unit priceIn stock (60 units) -
-
Up to 19% offNew arrival
BatteryWeb
H-Wave OSA476 Replacement Battery 7.2V 2000mAh Ni-MH H4
0.46 lb
Sale priceFrom $53.99 USD Regular price $66.99Unit priceIn stock (51 units) -
-
Up to 19% offNew arrival
BatteryWeb
GretagMacbeth 362132 Densitometer D196 Replacement Battery 7.2V 1800mAh
0.41 lb
Sale priceFrom $63.99 USD Regular price $78.99Unit priceIn stock (45 units) -
-
Up to 20% offNew arrival
BatteryWeb
Kern Chair MPD250 Scale Replacement Battery 7.2V 2200mAh Ni-MH
0.49 lb
Sale priceFrom $46.99 USD Regular price $57.99Unit priceIn stock (60 units) -
-
Up to 20% offNew arrival
BatteryWeb
Kern Chair MCC300K100M 7.2V Ni-MH Replacement Battery 2000mAh
0.54 lb
Sale priceFrom $46.99 USD Regular price $57.99Unit priceIn stock (60 units) -
-
Up to 19% offNew arrival
BatteryWeb
Spengler Pro-H Blood Pressure Monitor Replacement Battery 4.8V 2000mAh
0.31 lb
Sale priceFrom $38.99 USD Regular price $47.99Unit priceIn stock (60 units) -
