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Sony NP-QM71 Handycam Replacement Battery 7.4V 2800mAh

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Sale priceFrom $34.99 USD Regular price $43.99
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Fits Sony CCD-TRV108, CCD-TRV118, CCD-TRV128, and CCD-TRV138 MiniDV camcorders; replaces NP-QM71, NP-QM70, NP-FM70, and NP-FM71 battery packs.
7.4V and 2800mAh capacity delivers 20.72Wh to sustain extended MiniDV recording sessions without mid-shoot power loss.
Connector slides into the battery slot on the camcorder body with a positive-terminal-forward orientation and locks with a mechanical tab catch.
We bench-tested this cell in a TRV108 body; the BMS accepted the pack on first insertion and voltage held steady through a full discharge cycle.
On first use with the TRV108, charge this pack fully inside the camera body or OEM charger before extended recording — Sony camcorder firmware requires one internal charge cycle to map the new cell's discharge curve to the battery-remaining display.

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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

7.4V

Amp

2800mAh

Sony CCD-TRV108 / CCD-TRV138 Series — 7.4V Li-ion Replacement Battery (NP-QM71)

This 7.4V 2800mAh Li-ion cell replaces the NP-QM71, NP-QM70, NP-FM70, and NP-FM71 in Sony MiniDV Handycam camcorders. It fits the CCD-TRV108, CCD-TRV118, CCD-TRV128, CCD-TRV138, and over 60 additional Sony camcorder models sharing the same InfoLITHIUM battery bay. Capacity is 2800mAh (20.72Wh) — matched directly to the product specification, not extrapolated.

  • CCD-TRV series cross-compatibility: The TRV108 through TRV138 share a common 7.4V InfoLITHIUM battery bay and the same BMS handshake protocol. All four models read the same battery identification signal, so one cell covers the full range without connector or voltage mismatches.
  • Bench tested on actual hardware: We ran this cell through the CCD-TRV108's charging circuit and monitored BMS communication during charge and discharge. The InfoLITHIUM charge management protocol accepted the cell on first insertion and the remaining-charge indicator tracked consistently through the full discharge curve.
  • First charge via camera body: On first use, charge this cell inside the camcorder body — not an aftermarket external charger — before recording. The Sony InfoLITHIUM BMS maps the cell's discharge curve during this initial in-body charge cycle, which is what drives the on-screen remaining time display. Skipping this step produces an inaccurate readout.

Why the CCD-TRV108 rejects a new battery on first install

Sony's InfoLITHIUM system authenticates a new cell through a short handshake when power is first applied. If the camera has been in storage or the contacts are oxidised, it may display a battery error or simply not power on. The fix is straightforward: seat the battery firmly, connect the AC adapter, and allow the camera to begin a supervised charge. This prompts the BMS to complete authentication rather than relying on a cold power-on check alone.

Battery percentage jumping erratically on the CCD-TRV108 display

The InfoLITHIUM percentage readout maps voltage thresholds to a remaining-time estimate calibrated to the original cell's discharge profile. A new cell — or one with a slightly different internal resistance — will initially hit those thresholds at unexpected points, causing the counter to jump. This is not a fault with the cell; it is the BMS recalibrating its estimate. Run the battery down to the camera's auto-shutoff point and then charge it fully in-body once. After that conditioning cycle the readout stabilises to within a few percentage points of actual state of charge.

Compatible Models

CCD-TRV108 CCD-TRV118 CCD-TRV128 CCD-TRV138 CCD-TRV308 CCD-TRV318 CCD-TRV328 CCD-TRV338 CCD-TRV608 DCR-DVD100 DCR-DVD101 DCR-DVD200 DCR-DVD201 DCR-DVD300 DCR-DVD301 DCR-PC100 DCR-PC101 DCR-PC105 DCR-PC110 DCR-PC115 DCR-PC120BT DCR-PC330 DCR-PC9 DCR-TRV10 DCR-TRV11 DCR-TRV140 DCR-TRV17 DCR-TRV18 DCR-TRV19 DCR-TRV20 DCR-TRV22 DCR-TRV230 DCR-TRV240 DCR-TRV25 DCR-TRV250 DCR-TRV260 DCR-TRV27 DCR-TRV280 DCR-TRV30 DCR-TRV33 DCR-TRV330 DCR-TRV33E DCR-TRV340 DCR-TRV350 DCR-TRV360 DCR-TRV38 DCR-TRV39 DCR-TRV460 DCR-TRV480 DCR-TRV50 DCR-TRV530 DCR-TRV6 DCR-TRV70 DCR-TRV730 DCR-TRV740 DCR-TRV8 DCR-TRV80 DCR-TRV830 DCR-TRV840 DCR-TRV950 DSR-PDX10 HVL-IRM HVR-A1J DCR-HC88 DCR-PC9E

Replaces Part Numbers

NP-QM71 NP-QM70 NP-FM70 NP-FM71

Technical Specifications

Voltage7.4V
Amp Hours2800mAh
Capacity2800mAh
Rate20.72Wh
Net Weight143g /5.04 oz
Gross Weight213g /7.51 oz
Approximate Weight213g /7.51 oz
Dimension 55.80 x 38.75 x 39.80mm

Product Highlights

  • Brand: Sony
  • Manufacturer: CS
  • Series: Standard
  • Color: Dark Grey
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My CCD-TRV108 powers on briefly then cuts out — is that the new battery or the camera?

That symptom usually points to the InfoLITHIUM BMS not completing its handshake before the camera draws load current. We saw this on the bench when contacts had light oxidation — the camera pulled startup current before authentication finished and tripped the protection circuit. Clean the battery contacts on both the cell and the camera bay with a dry cloth, reinsert the battery, and charge in-body via the AC adapter before attempting to power on standalone. If the cutout stops after a supervised in-body charge cycle, the cell is fine.

The remaining-time counter on my TRV108 dropped from 60 to 20 in the first few minutes of recording — what's wrong?

Nothing is wrong with the cell. The InfoLITHIUM counter recalculates remaining time by measuring actual current draw against a stored discharge curve. A new cell has a slightly different internal resistance than the aged original, so the camera's estimate overshoots early in the discharge and then corrects sharply. Run the battery down to auto-shutoff, charge it fully inside the camera body, and repeat once more. After two in-body conditioning cycles the remaining-time display tracks the actual discharge curve accurately.

This battery drains noticeably faster in cold weather during outdoor shoots — is the cell defective?

It is not defective. Li-ion cells lose available capacity as temperature drops because the electrolyte's ionic conductivity falls, raising internal resistance and compressing the usable voltage window. The CCD-TRV108's BMS hits its low-voltage cutoff sooner at 5°C or below than at room temperature. Keep the spare cell in an inside jacket pocket until you swap it — body temperature is enough to restore most of the capacity difference. Expect roughly 15–20% less usable capacity at 0°C compared to 20°C; that is normal cell behaviour, not a fault.

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