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Two AAA NiMH rechargeable batteries in clear retail packaging

Uniden

Uniden BT-1021 600 mAh AAA NiMH 2-pack telephone accessory

SKU CH-4KFF-G7B1H

Two 600 mAh AAA NiMH batteries replace BT-1016, BT-1008, BT-1025 and CPH-515B cells in compatible Uniden cordless handsets

  • Longer calls with 600 mAh high-capacity cells
  • Two batteries included for immediate spare power
  • NiMH chemistry avoids memory effect and holds charge well
  • Direct replacement for BT-1016, BT-1008, BT-1025 and CPH-515B packs
  • Fits a wide range of Uniden DECT cordless models

Product identity

This pack contains two AAA nickel-metal hydride rechargeable batteries rated at 600 mAh and 2.4 V. They are designed as direct replacements for Uniden cordless handsets that originally shipped with lower-capacity cells.

Practical limits of the chemistry

Nickel-metal hydride cells self-discharge faster than alkaline primaries, so handsets left off the base for weeks may need a full charge cycle before use. The 600 mAh rating sets the maximum talk time; heavy users will still need to return the handset to its charger daily.

Installation and common issues

Each battery slides into the handset compartment with standard AAA polarity markings; no tools are required. The most frequent problem is reversed insertion, which prevents charging — verify the positive and negative ends match the diagram inside the battery door before closing it.

How it compares

Measured against everything we stock in Headsets, Cords & Phone Mounts, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 88% of the 796 comparable items (median $17.99).

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 600 mAh pack or a lower-capacity option?

This 2-pack supplies 600 mAh per cell, the highest capacity listed for compatible BT-series replacements, giving the longest talk time available for the supported handsets.

What does 600 mAh actually deliver in a cordless handset?

The 600 mAh rating doubles talk time compared with the original lower-capacity cells, so each handset runs significantly longer between charges.

Does the 2.4 V NiMH chemistry limit which Uniden models I can use these in?

The 2.4 V NiMH AAA cells replace BT-1016, BT-1008, BT-1025 and CPH-515B batteries and fit every handset model listed in the compatibility table.

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