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Rectangular Ni-MH battery pack, dark wrap, 51 by 43 by 15 mm

Estry

Estry T77 1500mAh 3.6V Ni-MH standard battery

SKU CH-NP55-R16MB MPN T77

1500 mAh 3.6 V Ni-MH replacement pack for Midland X-Talker two-way radios

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeNi-MH
  • Battery Capacity1500mAh
  • Battery Voltage3.6
  • Direct replacement for Midland T77 and T75 series radios
  • 1500 mAh Ni-MH chemistry delivers 5.4 Wh of reliable power
  • Built-in protection guards against over-charge, over-discharge and short circuits
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards
  • Compact 51.2 x 43.0 x 14.8 mm pack weighs only 95.4 g

Direct Replacement

The Estry T77 is a 1500mAh 3.6V Ni-MH battery built to match the original specifications for Midland two-way radios. It fits models such as the T77, T75, X-Talker T79, XT70 and T71, replacing part numbers BATT10, AVP13 and PB-X7.

Ni-MH Chemistry Limits

Nickel-metal hydride cells deliver 5.4Wh at 3.6V and self-discharge faster than lithium types, so stored packs lose charge over weeks. They tolerate partial charging without memory effect but require a compatible charger to avoid over-voltage or deep-discharge damage.

Certified Build Quality

The pack measures 51.2 x 43.0 x 14.8mm and weighs 95.4g, matching the OEM footprint for a secure latch fit. It carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications, and includes overcharge, over-discharge, over-voltage and short-circuit protection circuits.

Highlights

  • Direct replacement for Midland T77 and T75 series radios
  • 1500 mAh Ni-MH chemistry delivers 5.4 Wh of reliable power
  • Built-in protection guards against over-charge, over-discharge and short circuits
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards
  • Compact 51.2 x 43.0 x 14.8 mm pack weighs only 95.4 g

Specifications

BrandMidland
TypeBatteries
Battery Pack1-pack
Battery TypeNi-MH
Battery Capacity1500mAh
Battery Voltage3.6

Questions about this item

Is this the only capacity available for the Estry T77 battery?

This listing supplies a single 1500mAh 3.6V Ni‑MH pack; no other capacity option is offered for the T77 model.

How long will a 1500mAh pack run my Midland X‑Talker radio?

A 1500mAh 3.6V pack delivers 5.4Wh, typically providing several hours of talk time on compatible Midland X‑Talker models before recharge.

Does the battery use a proprietary connector or a standard interface?

The pack is built to the exact original specification for Midland models T77, T75, T79, T71, XT70 and part numbers BATT10, AVP13, PB‑X7, so it mates directly with the radio's factory connector.

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