Kastar 4-Pack Ni-MH 4.8V 1000mAh Two-Way Radio Battery Replacement for Uniden BP38, BP-38, BP39, BP-39, BP40, BP-40, Uniden BT537, BT1013, BT-537, BT-1013, FPB9404, GMR635, GMR635-2CK, GMR638, GMR645
Kastar 4-Pack Ni-MH 4.8V 1000mAh Two-Way Radio Battery Replacement for Uniden BP38, BP-38, BP39, BP-39, BP40, BP-40, Uniden BT537, BT1013, BT-537, BT-1013, FPB9404, GMR635, GMR635-2CK, GMR638, GMR645
Hero image 0 of Kastar 4-Pack Ni-MH 4.8V 1000mAh Two-Way Radio Battery Replacement for Uniden BP38, BP-38, BP39, BP-39, BP40, BP-40, Uniden BT537, BT1013, BT-537, BT-1013, FPB9404, GMR635, GMR635-2CK, GMR638, GMR645, 0 of 2
Kastar

Kastar 4-Pack Ni-MH 4.8V 1000mAh Two-Way Radio Battery Replacement for Uniden BP38, BP-38, BP39, BP-39, BP40, BP-40, Uniden BT537, BT1013, BT-537, BT-1013, FPB9404, GMR635, GMR635-2CK, GMR638, GMR645

4 stars out of 5 reviews
(4.0)|
5 ratings

Key item features

  • Enhanced Capacity: These Kastar Ni-MH batteries offer a high capacity of 1000mAh, providing extended power for devices and ensuring longer operational times.
  • Precise Specifications: Each battery features a Ni-MH type, 4.8V voltage, 1000mAh capacity, and compact dimensions of 1.8" x 1.6" x 0.4" (45.8 x 41.1 x 10.6mm).
  • Advanced Safety: Equipped with a mix-protection additive in the cathode, these batteries resist degradation during charging and discharging, extending their lifespan up to 1200 cycles.
  • Sustained Power: An embedded seal structure expands the crystal lattice space, allowing for greater hydrogen retention and enabling the batteries to hold power longer.
  • Eco-Conscious Design: Constructed with Ni-MH eco-friendly cells, these batteries are free from Hg/Cd/Pb, minimizing environmental pollution, and utilize a DBCK steel shell for explosion protection.
  • Broad Compatibility: This 4-pack of replacement batteries is compatible with numerous Uniden and RadioShack two-way radio models, including Uniden BP38, BT537, GMR635, and various RadioShack models.
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Current price is $11.99
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Columbus, 43215
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Sold and shipped by Kastar USA IncPro Seller
4.612582781456954 stars out of 5, based on 1510 seller reviews(4.6)
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4 out of 5 stars
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Showing 1-3 of 5 reviews

Feb 18, 2026
Waldo
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Size: 4-PACK
Sold and shipped byKastar USA Inc
5 out of 5 stars review

Verified Purchase

These batteries are exact matches to replace the dead batteries for my Uniden FRS radios AKA walkie talkies. Fit, charging and function are identical to original. I'd highly recommend them.

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Feb 14, 2026
Loren
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Size: 4-PACK
Sold and shipped byKastar USA Inc
5 out of 5 stars review

Verified Purchase

These units had not been used for some time, was happy to find the batteries and they are an easy install.

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Aug 26, 2025
Sue
Item details
Size: 4-PACK
Sold and shipped byKastar USA Inc
5 out of 5 stars review

Verified Purchase

Good Deal - Easy Purchase

Ordered easily - came a day earlier than promised.

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