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Rectangular Ni-MH battery pack, light grey plastic shell, labelled BT-1028 1000mAh 3.6V

Kastar

Kastar BT-1028 1000mAh Ni-MH battery 1-pack

SKU CH-M7JP-T6P72

Ni-MH 1000mAh 3.6V replacement cell for Uniden GMR3040 and GMR2638 walkie-talkies, rated for 1200 charge cycles

  • TypeBattery
  • Pack1 Battery
  • ChemicalLi-Ion
  • Capacity3.6 Wh
  • Dimensions3*2*1 Inch
  • FeaturesHigh Capacity and Manufacture Price.
  • Longer talk time from 1000mAh Ni-MH capacity
  • Lasts through 1200 charge cycles with mix-protection additive
  • Holds charge longer thanks to low self-discharge design
  • Fits Uniden GMR3040-2CK, GMR3040-3CK, GMR2638-2CK walkie-talkies
  • Eco-friendly cell free of Hg, Cd, Pb with DBCK steel shell

Kastar BT-1028 1000mAh Ni-MH Battery

This single-pack replacement cell delivers 1000mAh at 3.6V for compatible Uniden two-way radios. It suits owners of GMR3040-3CK, GMR3040-2CK or GMR2638-2CK handsets who need a fresh power source. The Ni-MH chemistry avoids mercury, cadmium and lead. Buyers needing multi-pack bundles or different form factors should look elsewhere.

Fits Uniden walkie-talkies using BT-1028

The battery measures 44.5 by 30.5 by 10.16mm and slides into the handset's existing compartment without modification. Its DBCK steel shell protects against overpressure while the embedded seal structure preserves hydrogen capacity. No charger or adapter is included in the pack. Builders integrating the cell into custom projects must verify voltage and polarity independently.

Rated for up to 1200 charge cycles

The mix-protection additive in the cathode slows degradation during repeated charging. In normal use the cell holds its charge longer than standard Ni-MH types, reducing the frequency of top-ups. Operating temperature range and internal resistance figures are not supplied by the manufacturer. The 3.6 Wh energy rating reflects nominal voltage multiplied by rated capacity.

Highlights

  • Longer talk time from 1000mAh Ni-MH capacity
  • Lasts through 1200 charge cycles with mix-protection additive
  • Holds charge longer thanks to low self-discharge design
  • Fits Uniden GMR3040-2CK, GMR3040-3CK, GMR2638-2CK walkie-talkies
  • Eco-friendly cell free of Hg, Cd, Pb with DBCK steel shell

Specifications

BrandKastar
ModelBT-1028
Part NumberMH-1B-BT1028-A
TypeBattery
Pack1 Battery
ChemicalLi-Ion
Capacity3.6 Wh
Dimensions3*2*1 Inch
FeaturesHigh Capacity and Manufacture Price.

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Questions about this item

How many charge cycles can the BT-1028 sustain before capacity drops?

The Ni-MH cell uses a mix-protection additive that extends lifespan up to 1200 cycles under normal charge and discharge use.

Does the battery heat up noticeably during long transmit sessions on a GMR3040-2CK?

Ni-MH chemistry runs cooler than Li-Ion at the same 1000 mAh rating, so extended talk time stays comfortable in hand.

Which Uniden handset models accept this exact BT-1028 pack?

It fits GMR3040-3CK, GMR3040-2CK and GMR2638-2CK two-way radios that originally use the BT-1028 or 58037235E cell.

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