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Sony NP-FM500H DSLR-A100 Replacement Battery 7.4V 2000mAh

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New arrival
From $39.99 USD $49.99
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Fits Sony DSLR-A100, DSLR-A200, DSLR-A300, DSLR-A350 and replaces NP-FM500H.
7.4V, 2000mAh capacity sustains autofocus, sensor, and LCD draw across extended shooting sessions.
Slides into battery door with keyed connector; locking tab seats flush with camera body.
Bench testing showed clean BMS handshake on first insertion; voltage ramp-up tracked within spec.
On first charge, use the OEM charger or camera body to establish BMS calibration for accurate battery-remaining display accuracy.
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.

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: 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

2000mAh

Sony DSLR-A100 / A200 / A300 / A350 — 7.4V Li-ion Replacement Battery (NP-FM500H)

This is a 7.4V, 2000mAh Li-ion replacement for the Sony NP-FM500H battery pack. It fits the DSLR-A100, A200, A300, and A350 bodies, along with over 110 additional Sony Alpha DSLR models sharing the same battery bay and connector. The cell is rated at 14.8Wh and slots directly into the camera's grip compartment.

  • Alpha DSLR platform compatibility: The A100 through A350 series all run on the same 7.4V battery rail with a shared connector pinout and BMS handshake protocol. Sony kept this battery form factor consistent across several generations, so one cell covers a wide range of Alpha bodies without modification.
  • Bench tested on actual hardware: We cycled this cell through the DSLR-A300 body and a Sony BC-VM10 charger. The BMS accepted the cell on the first charge cycle, reported capacity correctly, and held voltage above 7.0V through sustained burst shooting and live-view use.
  • First-cycle initialisation on Alpha bodies: Run one full charge cycle through the camera body or OEM charger before a heavy shoot. Sony's Alpha BMS maps the discharge curve during that first cycle — skipping it can cause the battery indicator to read inaccurately for the first few sessions.

Why the DSLR-A100 battery percentage jumps erratically after a swap

The A100 uses a voltage-threshold system to estimate remaining charge. A new cell has a slightly different discharge curve than an aged OEM pack, so the camera maps those voltage thresholds incorrectly on the first few cycles. You may see the indicator drop from 75% to 20% in a single burst sequence. After two or three full charge-discharge cycles through the camera body, the readings stabilise and track accurately through the rest of the cell's life.

Flash recycling slowing mid-shoot on a new NP-FM500H replacement

The built-in flash on A-series bodies draws a sharp current spike to recharge the capacitor between shots. If recycling time noticeably lengthens mid-shoot, the cell voltage is sagging under that capacitor-recharge load — usually below 7.0V. On the bench, we saw this begin when the replacement cell had not completed its first full conditioning cycle. Charge to 100% via the BC-VM10 or in-body charger, then discharge fully through shooting before your next session. Cell voltage should hold above 7.0V through a full card of flash-assisted frames once the cell is properly conditioned.

Compatible Models

DSLR-A100 DSLR-A200 DSLR-A300 DSLR-A350 DSLR-A700 DSLR-A100W/B DSLR-A100K DSLR-A100W DSLR-A100/B DSLR-A100H DSLR-A100K/B DSLR-A500 DSLR-A550 DSLR-A850 DSLR-A900 DSLR-A700H DSLR-A700K DSLR-A700Z DSLR-A350X DSLR-A300K/N DSLR-A200K DSLR-A300X DSLR-A200W DSLR-A700P DSLR-A350K DSLR-A300K DSLR-A200WB DSLR-A350B DSLR-A350H DSLR-A450 DSLR-A450L DSLR-A450Y DSLR-A500B DSLR-A500L DSLR-A500Y DSLR-A550B DSLR-A550H DSLR-A550L DSLR-A550Y DSLR-A580 DSLR-A580L DSLR-A580Y DSLR-A700B DSLR-A850B DSLR-A850Q SLT-A65V SLT-A65VB SLT-A65VK SLT-A65VM SLT-A65VY SLT-A77V SLT-A77VB SLT-A77VK SLT-A77VM SLT-A77VQ alpha SLT-A65VB alpha SLT-A65VK alpha SLT-A65VM alpha SLT-A65VY alpha SLT-A77V alpha SLT-A77VB alpha SLT-A77VK alpha SLT-A77VM alpha SLT-A77VQ alpha DSLR-A100K alpha DSLR-A100W/B alpha DSLR-A200WB alpha DSLR-A100 alpha DSLR-A100/B alpha DSLR-A100H alpha DSLR-A100K/B alpha DSLR-A100W alpha DSLR-A200 alpha DSLR-A200K alpha DSLR-A200W alpha DSLR-A300 alpha DSLR-A300K alpha DSLR-A300K/N alpha DSLR-A300X alpha DSLR-A350 alpha DSLR-A350B alpha DSLR-A350H alpha DSLR-A350K alpha DSLR-A350X alpha DSLR-A450 alpha DSLR-A450L alpha DSLR-A450Y alpha DSLR-A500 alpha DSLR-A500B alpha DSLR-A500L alpha DSLR-A500Y alpha DSLR-A550 alpha DSLR-A550B alpha DSLR-A550H alpha DSLR-A550L alpha DSLR-A550Y alpha DSLR-A580 alpha DSLR-A580L alpha DSLR-A580Y alpha DSLR-A700 alpha DSLR-A700B alpha DSLR-A700H alpha DSLR-A700K alpha DSLR-A700P alpha DSLR-A700Z alpha DSLR-A850 alpha DSLR-A850B alpha DSLR-A850Q alpha DSLR-A900 alpha DSLR-A100W/BD alpha SLR-A200WB _x000D_ DSLR-A100K _x000D_ DSLR-A100W/B _x000D_ DSLR-A200WB

Replaces Part Numbers

NP-FM500H

Technical Specifications

Voltage7.4V
Amp Hours2000mAh
Capacity2000mAh
Rate14.8Wh
Net Weight78g /2.75 oz
Gross Weight103g /3.63 oz
Approximate Weight103g /3.63 oz
Dimension 55.60 x 38.40 x 20.70mm

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 DSLR-A350 shows "no battery" with the new NP-FM500H replacement — is the cell dead?

It is not dead. Sony Alpha bodies run a BMS authentication check on install and can reject an uncharged third-party cell outright. Remove the battery, place it in a BC-VM10 external charger until the charge light goes green, then reinsert. If the camera still shows no battery, power cycle the body with the battery seated and the lens cap on — this resets the BMS handshake and the cell should register at full charge.

Shot count is much lower than I expected — is the 2000mAh spec wrong?

The rated capacity is correct at 2000mAh, but the A100 and its siblings draw from several systems at once. Continuous autofocus, the optical image stabiliser motor, LCD live preview, and flash capacitor recharging all pull current simultaneously — the combined draw is significantly higher than basic frame-capture alone. To extend your shot count, switch the LCD off between shots and use the optical viewfinder, disable stabilisation on a tripod, and let the flash fully recycle before firing again. These steps reduce peak current demand and let the cell run closer to its rated capacity.

The battery percentage drops fast in cold weather during outdoor shoots — is this a faulty cell?

Li-ion cells lose usable capacity as temperature drops — at around 0°C, effective capacity can fall to 70–75% of the rated figure. The A-series bodies do not compensate for temperature in their voltage-threshold calculations, so the indicator reads as if the cell is depleting faster than it actually is. Warm the battery to room temperature in an inside pocket between shots and reinsert it — voltage recovers and the indicator will jump back up. Keep a second cell inside your jacket and swap between them to maintain output through the shoot.

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