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TDK Life On Record A26 Replacement Battery 3.6V 700mAh

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From $22.99 USD $28.99
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Fits TDK Life On Record A26 speaker; replaces original 3.6V Ni-MH battery pack.
3.6V, 700mAh capacity restores full wireless playback cycle on this portable Bluetooth speaker.
Battery slides into original slot with single locking tab; connector orientation keyed to prevent reverse insertion.
Bench testing on the A26 showed stable voltage delivery under sustained amplifier load without sag distortion.
On first charge after install, run the speaker at moderate volume for one full discharge cycle before returning to normal daily use — Ni-MH cells in audio devices need initial current profiling to seat the fuel gauge accurately.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.6V

Amp

700mAh

TDK Life On Record A26 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 700mAh Ni-MH replacement battery for the TDK Life On Record A26 portable speaker. It slots in place of the original cell to restore wireless audio playback on a speaker that has lost charge capacity or stopped holding a charge altogether. Capacity figure is 2.52Wh, matching the original spec.

  • Life On Record A26 fit: The A26 runs a single Ni-MH cell at 3.6V to power both the amplifier board and the Bluetooth radio. Swapping in a cell at the wrong voltage or chemistry causes the protection circuit to reject the pack at first charge — this cell matches both parameters exactly.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the A26 platform and confirmed the BMS accepted the pack without fault flags, and the Bluetooth radio and amplifier drew cleanly without triggering undervoltage cutoff.
  • Ni-MH cycle care for the A26: Ni-MH cells in always-on desk speakers develop voltage depression when repeatedly charged from high state of charge. Let the A26 run down past the low-battery indicator at least once a month before plugging it in — this keeps cell voltage calibrated and slows capacity fade.

Audio distorting before the battery indicator reaches empty on the A26

The A26 amplifier needs a stable voltage rail to drive the speaker cleanly. As the Ni-MH cell ages and internal resistance rises, voltage sags under the combined draw of the amplifier and Bluetooth radio before the fuel gauge registers empty. The amplifier clips when the rail drops below its minimum operating voltage, producing audible distortion — even though the indicator still shows charge remaining. Replacing the cell eliminates the sag and restores clean output at full volume.

A26 Bluetooth dropping specifically at high volume, not at low volume

High-volume playback forces the amplifier to draw peak current at the same moment the Bluetooth radio is transmitting, creating a combined current spike the aging cell cannot sustain without a voltage dip. The Bluetooth module has a lower minimum operating voltage than the amplifier, so it loses signal first while audio continues briefly. The cell is the cause — not the radio or antenna. A fresh 700mAh cell at full charge holds voltage through those combined spikes and keeps the radio link stable.

Compatible Models

Life On Record A26

Technical Specifications

Voltage3.6V
Amp Hours700mAh
Capacity700mAh
Rate2.52Wh
Net Weight39g /1.38 oz
Gross Weight74g /2.61 oz
Approximate Weight74g /2.61 oz
Dimension 132.60 x 11.80 x 10.40 mm

Product Highlights

  • Brand: TDK
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My A26 shows a full charge after topping it up but audio cuts out well before the battery indicator moves — what's happening?

This is voltage depression on the Ni-MH cell, caused by repeatedly charging from a high state of charge without a full discharge cycle. The cell holds a surface charge that reads full but the usable capacity underneath has shrunk. The fuel gauge drifts away from actual cell state and the amplifier hits undervoltage cutoff while the indicator still shows bars. Run the speaker down past the low-battery warning completely, then charge it in one uninterrupted session to recalibrate — if the symptom returns immediately, the cell needs replacing.

Bluetooth drops out only when I push the A26 to high volume, but reconnects when I turn it down — is this a speaker fault or a battery fault?

It's the battery. At high volume, the amplifier and Bluetooth radio draw peak current simultaneously, pulling the cell voltage down faster than a worn cell can recover. The Bluetooth module loses its minimum operating voltage before the amplifier does, so the radio drops while audio briefly continues. A fresh 700mAh Ni-MH cell sustains voltage through those combined current spikes — confirm the cell is the cause by checking whether the dropout threshold drops noticeably as the pack ages.

The A26 feels noticeably warm on the fabric surface during extended play — is that a battery problem?

Some warmth is normal — the amplifier and the discharging Ni-MH cell both generate heat, and the fabric housing traps it. However, if the speaker feels hot rather than warm, or if warmth appears quickly after a fresh charge, the cell's internal resistance has risen and it is dissipating excess energy as heat rather than delivering it to the amplifier. A cell with high internal resistance also causes voltage sag and distortion at the same time. Replace the cell and check that the charge port and contacts are clean and making firm contact before reassembling.

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