Sony NP-FV100A Replacement Battery 7.3V 3050mAh Li-ion
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Sony NP-FV100A Replacement Battery 7.3V 3050mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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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Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Sony NP-FV100A Replacement Battery 7.3V 3050mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
7.3V
Amp
3050mAh
Sony FDR-AX40 / FDR-AX45 Series — 7.3V Li-ion Replacement Battery (NP-FV100A)
This is a 7.3V, 3050mAh Li-ion replacement for the Sony NP-FV100A battery pack. It fits the FDR-AX40, FDR-AX45, FDR-AX60, HDR-CX625, and nine additional Sony camcorder models. Slot it into the same battery bay as the original — same connector, same form factor.
- FDR-AX / HDR-CX platform fit: These camcorder lines share the NP-FV series battery interface — same 7.3V rail, same three-pin connector, and the same BMS handshake protocol. A single cell covers the full range without any adapter or modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an FDR-AX40 body. The BMS accepted the cell on first insert, reported charge status correctly, and held voltage under sustained 4K recording load without triggering a low-voltage cutoff prematurely.
- First-use charge cycle on the FDR-AX40: Seat the battery in the camera body and run a full charge cycle through the camera itself before shooting. Sony's BMS maps the discharge curve during that first in-body charge — skipping it can cause the remaining-battery indicator to read inaccurately for the first few sessions.
Why the FDR-AX40 drains faster under 4K with image stabilisation active
4K recording on the FDR-AX40 runs the sensor, processor, and Balanced Optical SteadyShot (BOSS) stabilisation simultaneously. That combination pulls significantly more current than standard HD recording with stabilisation off. A cell at 3050mAh is rated at a steady draw — real-world 4K with BOSS active spikes current demand beyond that baseline. If the camera feels warm and the battery indicator drops faster than expected, stabilisation mode and recording resolution are the first variables to check.
Battery percentage jumping erratically on the FDR-AX40 display
This happens when the camera's indicator hasn't yet mapped the new cell's discharge curve. The Sony BMS uses voltage thresholds calibrated to the OEM cell — a replacement cell may discharge along a slightly different curve, causing the percentage to skip or stall at certain points. It typically self-corrects after two or three full charge-discharge cycles. Run the battery down to the auto-shutoff point and recharge fully each time — by the third cycle the indicator should track steadily.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Sony
- 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 FDR-AX40 shows "no battery" or flashes a battery warning immediately after I insert this replacement — is the cell dead?
The camera's BMS runs an authentication check on every new cell at first insert. If it fails to handshake cleanly, it throws a no-battery warning even on a fully charged cell. Seat the battery firmly, then place it in the camera and charge it via the camera body using the original AC adaptor — one full in-body charge cycle is usually enough for the BMS to accept and register the cell correctly. After that charge completes, the warning should clear.
The shot count on this battery seems lower than what I was getting with my original NP-FV100A — what's drawing it down faster?
Flash, continuous autofocus, the electronic viewfinder, and Balanced Optical SteadyShot all draw current on top of the base recording load. If any of those were used less heavily with the old battery, the comparison won't be equal. Check whether BOSS stabilisation mode is set to Active rather than Standard — Active mode draws noticeably more current. With stabilisation on Standard and 4K recording, the cell's 3050mAh capacity is being used as rated.
The FDR-AX40 shuts down during a long recording session even though the battery indicator showed charge remaining — what causes this?
Under sustained 4K load, the processor and sensor heat up and current draw rises. If the cell's voltage sags below the BMS cutoff threshold — typically around 6.0V under load — the camera shuts off as a protection measure, even if the resting voltage looked acceptable. This is more likely to happen in warm ambient temperatures. Let the camera body cool for a few minutes, reinsert the battery, and check that the recorded voltage on restart sits above 6.5V before continuing.
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