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Four rectangular Ni-MH batteries with silver contacts and blue labels

Kastar

Kastar BT-1028 4-pack 3.6V 1000mAh Ni-MH camera battery

SKU CH-YEYN-WYBNM

Four-pack of 3.6 V 1000 mAh Ni-MH cells compatible with Uniden BT-1028, 58037235E and GMR-series two-way radios

  • TypeBattery
  • Pack4 Batteries
  • ChemicalLi-Ion
  • Capacity3.6 Wh
  • Dimensions3*2*3 Inch
  • FeaturesHigh Capacity and Manufacture Price.
  • Longer run-time from 1000 mAh Ni-MH cells
  • Up to 1200 charge cycles with mix-protection additive
  • Holds charge longer thanks to low self-discharge design
  • Eco-friendly cells contain no Hg, Cd or Pb
  • Fits Uniden BT-1028, GMR3040 and GMR2638 models

Compatible 4-Pack for Uniden Walkie-Talkies

This four-pack of Kastar BT-1028 batteries replaces the Uniden BT-1028 and 58037235E cells. Each unit delivers 3.6V and 1000mAh capacity. The pack suits owners of Uniden GMR3040-3CK, GMR3040-2CK and GMR2638-2CK two-way radios who need spare or replacement power cells.

Low Self-Discharge Chemistry

Ni-MH cells with an embedded seal structure hold charge longer during storage. The mix-protection additive in the cathode reduces degradation over repeated charge and discharge cycles. Rated lifespan reaches 1200 cycles. No Hg, Cd or Pb content and a DBCK steel shell guards against overpressure rupture.

Direct Fit Dimensions

Each battery measures 44.5 x 30.5 x 10.16mm (1.75 x 1.2 x 0.4 inches), matching the original Uniden form factor. The four-pack provides multiple spares for extended field use or multi-unit teams. No charger or additional accessories are included in this package.

Highlights

  • Longer run-time from 1000 mAh Ni-MH cells
  • Up to 1200 charge cycles with mix-protection additive
  • Holds charge longer thanks to low self-discharge design
  • Eco-friendly cells contain no Hg, Cd or Pb
  • Fits Uniden BT-1028, GMR3040 and GMR2638 models

Specifications

BrandKastar
ModelBT-1028
Part NumberMH-4B-BT1028-A
TypeBattery
Pack4 Batteries
ChemicalLi-Ion
Capacity3.6 Wh
Dimensions3*2*3 Inch
FeaturesHigh Capacity and Manufacture Price.

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Questions about this item

How do I install these BT-1028 batteries in my Uniden GMR3040-2CK walkie-talkie, and what orientation mistake should I avoid?

Open the battery compartment, align the metal contacts on the 44.5 x 30.5 x 10.16 mm pack with the device terminals, and press until the latch clicks; the step users miss is inserting the pack backwards, which prevents the radio from powering on.

What maintenance will these Ni-MH 3.6V 1000mAh cells need over their lifespan?

Charge them fully before first use, then recharge every few months if stored; the low self-discharge design holds power longer, and the mix-protection additive supports up to 1200 charge cycles before capacity drops noticeably.

What limit appears first during a long transmission session on my GMR2638-2CK?

The 3.6 Wh capacity will deplete after extended high-power transmit use, so the runtime limit shows up before any thermal or cycle-life constraint.

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