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Rectangular black lithium-ion battery pack with wire connector

KingSener

KingSener TXD-68C 7.4V 5000mAh 37Wh Li-ion door lock battery

SKU CH-Z3TK-SR30B MPN TXD-68C

7.4V 5000mAh Li-ion replacement battery for compatible smart door locks

  • Battery voltage rating7.4 V
  • Battery capacity5,000 mAh/37 Wh
  • Reliable power for smart locks with 7.4V output
  • Extended runtime from 5000mAh capacity
  • 37Wh energy rating supports long standby
  • Li-ion cells deliver stable voltage
  • Direct replacement for TXD-68C and TZ68-C models

Replacement battery for smart door locks

The KingSener TXD-68C is a 7.4V 5000mAh lithium-ion cell built to replace the original power pack in compatible smart locks. It delivers 37Wh of energy and carries the part numbers TXD-68C and TZ68-C for direct identification. The pack is supplied new in a black finish with a P+P-TC-C+ pin arrangement.

Drop-in fit for supported lock models

This unit slots into the lock’s existing battery cavity without wiring changes, using the native connector layout. It restores full wireless operation and keypad response once installed, removing the need for external power packs or frequent alkaline swaps. Builders should verify the lock’s part number against TXD-68C or TZ68-C before fitting.

Steady output over extended daily cycles

The lithium-ion chemistry maintains a stable 7.4V rail across repeated lock and unlock events, avoiding the voltage sag common with depleted alkaline cells. Capacity remains consistent through regular daily use, supporting months of typical traffic before a recharge is required. First listed by the manufacturer in 2025.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 67% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameKingSener
Model nameTXD-68C
Part numberTXD-68C
TZ68-C
Power
Battery voltage rating7.4 V
Battery capacity5,000 mAh/37 Wh

Questions about this item

How long will the 5000mAh 37Wh capacity last before the 7.4V output drops under continuous lock operation?

The 5000mAh 37Wh rating indicates total energy stored; actual run time depends on the lock's current draw, which varies by model and usage pattern.

Does the Li-ion cell generate noticeable heat or require ventilation when the smart lock stays active all day?

Li-ion cells in this format run cool during normal lock duty cycles; no active cooling or special ventilation is needed inside the lock housing.

Which smart lock models accept the P+P-TC-C+ pin layout so this TXD-68C fits without modification?

This battery replaces part numbers TXD-68C and TZ68-C; verify your lock's service manual lists one of those part numbers before ordering.

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