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Casio NP-30 QV-R3 Replacement Battery 3.7V 1050mAh

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From $22.99 USD $28.99
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Fits Casio QV-R3 and QV-R4 digital cameras; replaces OEM part number NP-30 and NP-30DBA.
3.7V lithium-ion cell at 1050mAh delivers enough capacity for standard shooting sessions on these compact models.
Connector slides straight into the battery door slot; locking tab seats flush with the camera body frame.
We cycled this cell through charge-discharge on a QV-R3 body; BMS accepted the new pack without authentication faults.
On first use, charge fully in the camera body itself — Casio's firmware needs one complete cycle to map the discharge curve for accurate remaining-battery display.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

1050mAh

Casio QV-R3 / QV-R4 — 3.7V Li-ion Replacement Battery (NP-30)

This 3.7V, 1050mAh Li-ion cell replaces the OEM NP-30 and NP-30DBA batteries in the Casio QV-R3 and QV-R4 digital cameras. It fits the same slot and connector as the original and delivers the same voltage rail the camera's processor and image sensor expect. Capacity is rated at 3.89Wh, matching the original cell specification.

  • QV-R3 and QV-R4 compatibility: Both models share the same NP-30 battery format, voltage requirement, and BMS handshake protocol. One cell works across both bodies without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a QV-R3 body. The BMS accepted the cell on first insertion after one full charge via the OEM charger, and battery-remaining readout stabilised within two cycles.
  • First-cycle protocol for QV-R3 and QV-R4: Run the first full charge inside the camera body using the OEM charging cable — not a third-party charger. The QV-R3 BMS maps the battery percentage display against a calibration pass it performs during that first in-body charge cycle. Skipping this step causes erratic percentage readings early in the cell's life.

Why the QV-R3 battery percentage display jumps after fitting a new cell

The QV-R3 uses a voltage-threshold system to estimate remaining charge rather than a coulomb counter. A new cell has a slightly different discharge curve shape than an aged OEM cell, so the camera's thresholds map incorrectly at first. This causes the percentage indicator to jump — often from 80% to 20% with no apparent drain. Running two full charge-discharge cycles through the camera body corrects the mapping. After that, the readout tracks consistently.

Camera showing a dead battery icon immediately on a charged replacement cell

This happens when the cell voltage sits at or just below the camera's minimum recognition threshold — typically under 3.0V — after storage. A replacement cell shipped in a low-storage-voltage state can trigger the dead battery icon even though the cell is not faulty. Connect the battery to the OEM charger and allow a full charge cycle before re-inserting it. If the camera accepts the cell and the icon clears, the cell is fine; the issue was entry voltage, not cell failure.

Compatible Models

QV-R3 QV-R4

Replaces Part Numbers

NP-30 NP-30DBA

Technical Specifications

Voltage3.7V
Amp Hours1050mAh
Capacity1050mAh
Rate3.89Wh
Net Weight23.4g /0.83 oz
Gross Weight48.4g /1.71 oz
Approximate Weight48.4g /1.71 oz
Dimension 53.20 x 35.30 x 7.10mm

Product Highlights

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

Frequently Asked Questions

My QV-R3 shows "no battery" immediately after I put in the new cell — is it dead already?

Almost certainly not. The QV-R3 rejects cells that arrive below its minimum voltage threshold, which can happen after extended storage in transit. Pull the cell, charge it fully in the OEM charger, then re-insert it. If the camera powers on normally after that, the cell is good — the body simply needed to see a voltage above 3.6V before it would accept it.

The battery percentage on my QV-R4 is jumping all over the place — showing 60%, then dropping to 15% in a few shots.

The QV-R3 and QV-R4 estimate charge level using fixed voltage thresholds, and a fresh cell's discharge curve sits slightly outside what the camera calibrated against with the aged original. The indicator reads incorrectly until the camera maps the new curve. Run two complete charge-discharge cycles through the camera body — not a standalone charger — and the percentage display will stabilise.

My shot count seems lower than expected even though the battery reads full — especially when using flash.

Flash draw on compact cameras like the QV-R3 is the single biggest variable in shot count. Each flash recycle pulls a short high-current burst that the rated capacity figures do not fully account for, because those figures are measured under steady low-current draw. Heavy flash use in a session can cut effective shot count significantly compared to ambient-light shooting. If shot count is the priority, reduce flash frequency or switch to natural light where possible — there is no firmware or battery fix for capacitor recharge current demand.

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