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Small black rectangular lithium-ion battery with two metal contacts

KingSener

KingSener 78904586 laptop battery 750mAh 3.6V for Welch-Allyn 72200 11720

SKU CH-3C04-Q5YJY MPN 78904586

Replacement lithium-ion battery rated at 3.6 volts and 750 milliampere-hours for Welch-Allyn otoscope handles 72200 and 11720

  • Battery voltage rating3.6 V
  • Battery capacity750 mAh / 2.7 Wh
  • Replacement battery restores Welch-Allyn 72200 and 11720 handles
  • 750 mAh capacity delivers 2.7 Wh of runtime
  • 6 V Li-ion chemistry matches original specifications
  • 100 % brand-new cells with verified full-charge capacity
  • One-year warranty backs reliable power for medical use

Replacement battery for Welch-Allyn handles

This KingSener 78904586 is a 3.6 V, 750 mAh lithium-ion cell built to replace the original power pack in Welch-Allyn otoscope and diagnostic handles 72200 and 11720. It delivers 2.7 Wh of energy and matches the factory dimensions so no adapter or modification is required.

Suitable for clinicians needing a direct swap.

Medical staff who want a brand-new, 100 % compatible cell for the listed handles will find this unit fits and functions immediately. Buyers whose equipment uses a different voltage, capacity or form factor should look at something else because this pack is specific to the two Welch-Allyn models named.

3.6 V 750 mAh lithium-ion specification

The single figure that decides fitment is the 3.6 V, 750 mAh (2.7 Wh) lithium-ion chemistry; only devices designed for that exact voltage and capacity will operate correctly with this replacement.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 27,790 items is $30.99.

Specifications

Product
Brand nameKingSener
Model name78904586
Part number78904586
KP-WB710MD
Power
Battery voltage rating3.6 V
Battery capacity750 mAh / 2.7 Wh

Questions about this item

What physical size and connector does the 78904586 battery use to fit the Welch-Allyn 72200 handle?

It matches the original battery dimensions and connector for the 72200 and 11720 handles, so no adapter or modification is required.

How is the battery installed, and what step do users often miss?

Remove the old cell, insert the new 3.6 V pack, then fully charge and discharge it two or three times to condition the cells before regular use.

What ongoing care will the 750 mAh Li-ion cell need?

If stored, recharge it above 80 % at least once a month; avoid leaving it on the charger continuously and keep it out of hot or humid environments.

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