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Rectangular lithium battery pack 53.0 by 35.3 by 11.0mm 65.0g

Estry

Estry standard battery 1800mAh 3.7V for Maico easyTymp Titan TCallisto 74101501 MAI-721-4

SKU CH-G1BW-22XKQ

Replacement lithium battery delivers 1800 mAh at 3.7 V for Maico easyTymp, Interacoustics Titan and TCallisto devices

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity1,800 mAh
  • Battery voltage rating3.7
  • Product typeBatteries
  • 1800 mAh capacity powers Maico easyTymp Titan TCallisto devices
  • 7 V lithium cell matches original voltage specification
  • Built-in overcharge over-discharge over-voltage short-circuit protection
  • Certified to ISO9001 RoHS CE UN38.3 MSDS standards
  • Compact 53.0 x 35.3 x 11.0 mm form factor weighs 65.0 g

Direct replacement battery for Maico easyTymp

The Estry standard battery is a 1800mAh 3.7V lithium pack built to match the original 74101501 MAI-721-4 specifications for Maico easyTymp Interacoustics Titan and TCallisto devices. It ships new with overcharge over discharge over voltage and short circuit protection included.

Upgrades from worn or swollen original cells

When the factory pack no longer holds a full charge or shows physical swelling the jump to this 6.66Wh replacement restores reliable runtime. The move is worth it if the device still meets clinical requirements and the original part number matches 74101501 or MAI-721-4.

Steady output under continuous clinical use

Protection circuitry maintains stable voltage during extended screening sessions without the voltage sag seen in aged cells. The 53.0 x 35.3 x 11.0mm form factor fits the existing compartment and the 65.0g weight keeps the instrument balance unchanged.

How it compares

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

Price $17.99
Pricier than about 73% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameMaico
Product typeBatteries
Power
Battery typeLithium
Battery capacity1,800 mAh
Battery voltage rating3.7
In the box
Battery pack size1-pack

Questions about this item

Will the 53.0 x 35.3 x 11.0 mm battery fit the easyTymp battery compartment?

The pack measures 53.0 x 35.3 x 11.0 mm and weighs 65.0 g, matching the original dimensions for the listed models.

What is the correct orientation when inserting this 3.7 V lithium pack?

Align the connector polarity with the device socket; the keyed plug prevents reverse insertion, so press straight in until it clicks.

When should I replace the 1800 mAh cell?

Replace when runtime falls noticeably or the device reports low capacity; the pack is certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards.

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