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
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

  • Total capacity3.6 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key 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.

How it compares

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

Price $20.99
Pricier than about 62% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBT-1028
Part numberMH-4B-BT1028-A
Total capacity3.6 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

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.

More in Camera Batteries, Grips & Chargers

Similar items