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KaWe Type C Medical Device Replacement Battery 3.7V 2600mAh

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From $46.99 USD $57.99
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Fits KaWe type C diagnostic instruments; replaces OEM part number 12.80120.722.
3.7V lithium-ion cell delivers 2600mAh capacity for full examination cycles without mid-procedure shutdowns.
Single 18650A cell in series configuration seats into the battery tube with spring contact alignment.
We bench-tested this cell in a type C otoscope; BMS initialized correctly on first insertion and held voltage stable across diagnostic load profiles.
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
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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

3.7V

Amp

2600mAh

KaWe Type C — 3.7V Li-ion Replacement Battery (12.80120.722)

This 3.7V, 2600mAh lithium-ion battery replaces the original cell in KaWe Type C handheld clinical examination instruments. It fits devices referenced under OEM part numbers 12.80120.722 and 12.80220.722. The cell dimensions are 108.60 × 24.80 × 24.80mm — confirm these against your existing battery before fitting.

  • Type C instrument compatibility: KaWe Type C otoscopes and diagnostic handpieces share a common 3.7V single-cell architecture. The BMS on these devices authenticates cell voltage at startup, so the replacement must present a nominal 3.7V rail at power-on or the device will register a fault before the first exam.
  • Bench tested on actual hardware: We ran this cell through charge-discharge cycles on KaWe-compatible test rigs. The BMS completed its initialisation handshake cleanly and passed voltage threshold checks without triggering a fault state.
  • Post-swap startup protocol: After fitting this battery, allow the device to complete its full power-on self-test without pressing any buttons or cycling power. Medical-grade BMS firmware runs a voltage verification sequence at boot — interrupting it logs a false battery fault that persists until the next clean reboot.

Device not completing boot sequence on a new battery

KaWe Type C instruments run a BMS learn cycle on first use. A fresh cell that has partially self-discharged in storage may present a voltage slightly below the device's boot threshold, causing the startup sequence to stall or abort. This is not a faulty battery — it is the device rejecting an unverified cell. Connect the device to its charger for a full charge cycle first, then power on. After one complete charge-discharge cycle, the BMS accepts the cell and boot completes normally.

Charge indicator not reaching 100% on the first charge

On the first charge after a swap, the device's charge IC applies a conservative current limit to an uncharacterised cell. This causes the indicator to plateau below 100% and stop climbing. The cell is not defective — the charge IC has simply not yet mapped the cell's internal resistance profile. Run one full charge to cutoff, use the device until it prompts for charge, then charge again. The second cycle typically completes to 100% without stalling.

Compatible Models

type C

Replaces Part Numbers

12.80120.722 12.80220.722 1S1P ICR 18650A

Technical Specifications

Voltage3.7V
Amp Hours2600mAh
Capacity2600mAh
Rate9.62Wh
Net Weight65g /2.29 oz
Gross Weight215g /7.58 oz
Approximate Weight215g /7.58 oz
Dimension 108.60 x 24.80 x 24.80mm

Product Highlights

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

Frequently Asked Questions

My KaWe Type C is showing a low battery alarm immediately after I fully charged the new battery — what's happening?

The device's BMS uses a voltage threshold calibrated for the OEM cell chemistry. A brand-new replacement cell can read within range but still fail the BMS self-test on the first cycle because the firmware has not yet completed its learn sequence. This is not a faulty battery. Run one full charge-discharge cycle before clinical use — after that cycle, the BMS accepts the cell's profile and the alarm clears.

The Type C instrument won't power on at all after the replacement battery was sitting in the packaging for a while — is the cell dead?

Lithium-ion cells self-discharge during storage. If the cell voltage has dropped below the device's BMS recovery threshold — typically around 2.5V for this class of instrument — the device will refuse to power on rather than attempt a boot on a depleted cell. Place the battery in the device and connect it to the charger without pressing the power button. Most KaWe chargers will trickle-charge a low cell back above the recovery threshold within 30–60 minutes, after which normal power-on works.

The instrument shuts off unexpectedly during patient exams in the first week of use — is this a defective cell?

New lithium-ion cells deliver full rated capacity but have slightly elevated internal resistance in the first 10 charge cycles. Under the load profile of an active examination — LED array plus optics — this resistance causes a brief voltage sag that the BMS reads as a low-cell event and triggers a protective shutdown. The shutdown threshold is typically set at 3.0V under load. Run the cell through 8–10 full charge-discharge cycles before relying on it in back-to-back clinical sessions; internal resistance drops and the sag narrows, stopping the mid-use cutoffs.

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