We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular Ni-Cd battery pack, matte finish, 73.3 x 28.5 x 25.7mm

Estry

Estry 11720 standard battery 3.6V 750mAh 2.7Wh

SKU CH-M0F6-248K7 MPN 11720

A 3.6 V Ni-Cd replacement battery delivering 750 mAh and 2.7 Wh for compatible cordless devices

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeNi-Cd
  • Battery Capacity750mAh
  • Battery Voltage3.6
  • Ready replacement for original 11720 battery
  • 750mAh Ni-Cd capacity powers compatible devices
  • 6V 2.7Wh matches factory specifications
  • Built-in protection prevents overcharge and short circuit
  • Certified to ISO 9001 RoHS CE UN38.3 MSDS standards

Direct replacement for cordless tools

The Estry 11720 is a nickel-cadmium cell rated at 3.6V and 750mAh, delivering 2.7Wh. It matches the original dimensions of 73.3 by 28.5 by 25.7mm and weighs 114.0g. The pack suits devices listing part numbers such as 71020, 71054 or 78904586. Buyers who need lithium-ion chemistry or a different voltage cannot use this cell.

Steady output through repeated cycles

Nickel-cadmium chemistry maintains a stable voltage during extended discharge, avoiding the sharp drop seen in some alternatives near empty. The 750mAh capacity supports consistent run time across multiple charge cycles. Overcharge, over-discharge and short-circuit protection circuits help preserve cell health under continuous use. Users who require higher capacity for longer shifts will find the limit restrictive.

Certified to UN38.3 and RoHS standards

The battery carries ISO9001, CE, RoHS, UN38.3 and MSDS certifications, confirming compliance with transport and substance restrictions. These approvals cover the 3.6V 750mAh configuration in a single pack. Equipment needing a different form factor or a proprietary communication protocol will not accept this unit.

Highlights

  • Ready replacement for original 11720 battery
  • 750mAh Ni-Cd capacity powers compatible devices
  • 6V 2.7Wh matches factory specifications
  • Built-in protection prevents overcharge and short circuit
  • Certified to ISO 9001 RoHS CE UN38.3 MSDS standards

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeNi-Cd
Battery Capacity750mAh
Battery Voltage3.6

Questions about this item

Does the 3.6V 750mAh Ni-Cd pack generate noticeable heat when left on charge all day?

The 2.7Wh cell stays cool during normal charging; Ni-Cd chemistry does not produce excess heat if the charger terminates correctly.

What must I already own for this 11720 replacement to work in my device?

You need a device that accepts a 73.3 x 28.5 x 25.7mm 3.6V Ni-Cd pack and a charger designed for Ni-Cd chemistry.

Will this 114.0g battery fit the same compartment as my original 11730 or 71020 pack?

Yes, it matches the 73.3 x 28.5 x 25.7mm footprint of the 11730, 71020 and all other listed compatible models.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.