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Small rectangular lithium battery with flat silver finish and two contact tabs

Estry

Estry U941A standard battery 650mAh 3.7V

SKU CH-W05B-3TW24 MPN U941A

Lithium replacement battery delivers 650 mAh at 3.7 V for UDI U941A and U816A models

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity650mAh
  • Battery Voltage3.7
  • 650mAh lithium cell powers U941A and U816A drones
  • 7V 2.41Wh rating matches original battery specifications
  • Overcharge, over-discharge and short-circuit protection built in
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards
  • Compact 45.54 x 25.24 x 9.52mm pack weighs 41.6g

Replacement battery for UDI models

This lithium-ion pack replaces the original cell in UDI U941A and U816A devices. It delivers 3.7 V and 650 mAh capacity with a rated energy of 2.41 Wh. The pack includes overcharge, over-discharge, over-voltage and short-circuit protection circuits.

Suitable for owners of listed UDI devices

Users needing a direct replacement for the original battery in the compatible models will find the correct voltage, capacity and form factor. Buyers whose equipment requires a different voltage, higher capacity or an alternative connector should look at other options.

650 mAh capacity at 3.7 V

The single specification that determines fit is the 650 mAh capacity at 3.7 V, matching the original battery electrical rating. Confirm the model number and part number on the existing cell before purchase to ensure compatibility.

Highlights

  • 650mAh lithium cell powers U941A and U816A drones
  • 7V 2.41Wh rating matches original battery specifications
  • Overcharge, over-discharge and short-circuit protection built in
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards
  • Compact 45.54 x 25.24 x 9.52mm pack weighs 41.6g

Specifications

BrandUDI
TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity650mAh
Battery Voltage3.7

Questions about this item

Which UDI drone models does the Estry U941A battery fit?

This replacement battery is compatible with the UDI U941A and U816A models.

What does the 650 mAh capacity deliver in a UDI drone?

The 650 mAh lithium pack provides 2.41 Wh at 3.7 V, matching the original flight time and power draw for the U941A and U816A.

What connector standard does the battery use and what does it limit?

The pack uses the OEM JST connector found on the U941A and U816A, limiting use to those airframes and their stock charging circuit.

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