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Green rectangular Ni-MH battery pack 50 by 30.7 by 10.8 mm

Centenex Electronics

Centenex Electronics BAPLANTRONIC_CT12 Plantronics CT11 CT12 headset battery 3.6V 800mAh Ni-MH

SKU CH-AXPC-J7CGC

Replacement 3.6 V Ni-MH battery with 800 mAh capacity for Plantronics CT11 and CT12 cordless headsets

  • Product typeHeadPhone Battery
  • Replaces original 63421-01 pack for Plantronics CT11 and CT12 headsets
  • Ni-MH chemistry delivers 800 mAh capacity at 3.6 V for reliable talk time
  • Compact 50 x 30.7 x 10.8 mm form factor fits battery compartment exactly
  • Brand-new cell guarantees 100 % OEM-compatible performance from first charge
  • Single-unit pack keeps a spare ready for CS500 series wireless headsets

Purpose & Fit

This Centenex Electronics replacement cell powers Plantronics CT11 and CT12 cordless headsets. It matches the original 63421-01 and 64376-01 part numbers with a 3.6 V Ni-MH cell rated at 800 mAh. The pack suits office staff who rely on a CS500-series wireless headset for daily calls.

Sustained Behaviour

Nickel-metal-hydride chemistry delivers a steady 3.6 V through long talk sessions without the voltage sag seen in short bursts. The 0.8 Ah capacity supports extended shifts before recharge, and the green label identifies the chemistry at a glance. No memory-effect management is required beyond normal cycling.

Install & Pitfalls

The 50 x 30.7 x 10.8 mm pack slides into the headset battery compartment in one orientation. Polarity markers on the housing must align with the device contacts; reversing them prevents charging. A single unit ships per order, so buyers needing a spare for a second headset should order two.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 99% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCentenex Electronics
Model nameBAPLANTRONIC CT12
Product typeHeadPhone Battery

Questions about this item

Does the 3.6 V 800 mAh Ni-MH cell run hot during long calls?

The pack is a standard Ni-MH chemistry rated at 3.6 V and 800 mAh; it produces only mild warmth under normal headset duty cycles.

My Plantronics CT11 still uses the original 63421-01 pack — will this replacement fit without soldering?

Yes, it matches the 63421-01 and 164376-01 part numbers and the 50 x 30.7 x 10.8 mm footprint, so it drops straight into the CT11 or CT12 battery compartment.

Will the 0.8 Ah capacity work with the charging base I already have for my CS500 series headset?

The cell is specified at 800 mAh and 3.6 V, the same voltage and capacity the original CS500 base expects, so the existing cradle charges it normally.

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