Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Hitachi DZ-BP7SJ Compatible Battery 7.4V 750mAh

Up to 21% off
New arrival
From $24.99 USD $30.99
Shipping calculated at checkout.
Fits Hitachi DZ-MV730A, DZ-MV580A, DZ-M8000V6, and DZ-MV750 camcorders; replaces DZ-BP7SJ, DZ-BP07PW, CGR-DU06E/1B, DZ-BP07P, DZ-BP7S, DZ-BP07S, and DZ-BP7SW.
7.4V, 750mAh lithium-ion delivers consistent power for compact digital camcorder recording without mid-session power loss.
Connector slides straight into the Hitachi battery slot with positive terminal forward; locking tab clicks into place with audible engagement.
We bench tested the cell on a DZ-MV730A body; BMS accepted the pack on first insertion with correct charge-remaining display calibration.
On initial use, run one complete charge cycle through the camera body before sustained video recording — Hitachi camcorder firmware needs the power cycle to map fuel-gauge accuracy for voltage-threshold readings.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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.

Disclaimer

⚠️ 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

750mAh

Hitachi DZ-MV730A Series — 7.4V Li-ion Replacement Battery (DZ-BP7SJ)

This 7.4V, 750mAh Li-ion battery replaces the DZ-BP7SJ and six other OEM part numbers across the Hitachi DVD camcorder range. It fits the DZ-MV730A, DZ-MV580A, DZ-MV750, DZ-M8000V6, and over 70 additional Hitachi models. Same voltage rail, same connector, same BMS handshake as the factory cell.

  • Multi-model fit across the Hitachi DVD camcorder platform: The DZ-MV and DZ-M lines share a common battery bay geometry and 7.4V power rail. OEM part numbers DZ-BP07PW, DZ-BP07P, DZ-BP7S, DZ-BP07S, DZ-BP7SW, CGR-DU06E/1B, and DZ-BP7SJ all cross to this cell. The connector orientation and BMS communication protocol are identical across this platform generation.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a DZ-MV series body. The BMS accepted the replacement without error flags, and the battery-remaining indicator tracked consistently through the discharge curve from first use after one full charge cycle in the camera body.
  • First-use cycle on the DZ-MV730A: Run one complete charge cycle through the camera body or OEM charger before shooting. The DZ-MV series BMS maps its battery-remaining display against a stored discharge curve — skipping this step can cause the indicator to read inaccurately during early sessions.

Dead battery indicator on a partially charged replacement cell in the DZ-MV series

The DZ-MV730A uses a voltage-threshold system to estimate remaining charge. A new cell that has not completed its first calibration cycle can sit at 7.2V and still trigger the low-battery warning because the camera's stored curve doesn't yet match the new cell's discharge profile. This is not a fault with the replacement — it is the BMS reading an unrecognised curve. One full charge via the OEM charger or in-body charging resets the threshold mapping and resolves the false warning. After that cycle, the indicator tracks correctly from 8.4V fully charged down to the 6.0V cutoff.

Battery percentage jumping erratically during recording on the DZ-MV730A

When the DZ-MV730A's display shows percentage values jumping — for example, from 60% to 20% and back — the cause is a mismatch between the camera's stored discharge curve and the new cell's actual voltage-to-capacity relationship. The camera samples terminal voltage at intervals and maps it to a fixed internal table calibrated to the original cell's chemistry batch. A replacement cell with a slightly different internal resistance will produce voltage readings that land in the wrong table bracket under load. Performing one full charge-discharge cycle through the camera body re-anchors the threshold mapping to the replacement cell's actual curve, and the percentage display stabilises from that point.

Compatible Models

DZ-MV730A DZ-MV580A DZ-M8000V6 DZ-MV750 DZ-HS401 DZ-GX25M DZ-MV550 DZ-MV350E DZ-GX3300(S) DZ-GX5080A DZ-GX5000A DZ-BX35 DZ-BD7HE DZ-BX37E DZ-HS300 DZ-HS500E DZ-MV750E DZ-GX3200E DZ-HS303A DZ-HS803 DZ-GX20E DZ-HS303E DZ-BD7HA DZ-MV780A DZ-MV350A DZ-MV750MA DZ-MV550E DZ-GX20 DZ-M7000V5 DZ-MV730 DZ-HS403 DZ-MV380E DZ-HS500SW DZ-MV350 DZ-GX3200 DZ-HS500A DZ-GX5060 DZ-GX5100SW DZ-GX5020 DZ-GX5020E DZ-GX3100A DZ-HS300E DZ-BD70A DZ-MV730E DZ-GX3300E DZ-HS301E DZ-HD90 DZ-GX20A DZ-BX35E DZ-BD70 DZ-MV780S DZ-BX35A DZ-MV580E DZ-MV550A DZ-MV780 DZ-M5000V5 DZ-MV580 DZ-HS503 DZ-MV380 DZ-GX3300(B) DZ-GX5020A DZ-GX3100 DZ-GX5060SW DZ-GX5100 DZ-GX5300 DZ-BD70E DZ-GX5100E DZ-MV780E DZ-GX3100E DZ-HS300A DZ-HS903 DZ-HS301SW DZ-BD9H DZ-HS501E DZ-BD7H DZ-MV780R DZ-MV380A

Replaces Part Numbers

DZ-BP7SJ DZ-BP07PW CGR-DU06E/1B DZ-BP07P DZ-BP7S DZ-BP07S DZ-BP7SW

Technical Specifications

Voltage7.4V
Amp Hours750mAh
Capacity750mAh
Rate5.55Wh
Net Weight41g /1.45 oz
Gross Weight66g /2.33 oz
Approximate Weight66g /2.33 oz
Dimension 41.50 x 36.10 x 19.20mm

Product Highlights

  • Brand: Hitachi
  • 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

The DZ-MV730A shows "no battery" or refuses to record even after I insert the new battery — what's happening?

The DZ-MV series runs a BMS authentication check on insertion and will reject a new cell that hasn't completed a charge handshake with the camera. Insert the battery, connect the OEM charger to the camera body, and let it run a full charge cycle — don't just top it off. Once the camera completes that cycle internally, it registers the cell and the "no battery" flag clears. After that, normal operation resumes without re-triggering the check.

My shot count seems far lower than it should be — the battery drops faster than expected during recording sessions.

The DZ-MV730A draws from the battery across multiple systems simultaneously during recording: the DVD drive motor, optical image stabilisation, the LCD display, and continuous autofocus all pull current on top of the sensor and processor load. The rated 750mAh capacity reflects a standard discharge rate — sustained recording with the LCD at full brightness and OIS active will deplete the cell faster than that baseline. Dimming the LCD and switching OIS off when shooting from a tripod significantly reduces combined draw and extends recording capacity per charge.

The DZ-MV730A battery drops fast in cold weather even though it reads full indoors — is the cell faulty?

This is normal Li-ion behaviour, not a cell fault. At temperatures below 10°C, the electrolyte in a Li-ion cell increases internal resistance, which causes terminal voltage to sag under load — the camera reads that sag as a low-charge state and can cut power even when the cell is at 60–70% actual capacity. Warm the battery to room temperature before shooting in cold conditions; a cell that reads depleted at 5°C will recover to above 7.0V once warmed. Store spare cells in an inner jacket pocket between shots when shooting outdoors in cold weather.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Hitachi DZ-MV730A Replacement Battery, 7.4V, 750mAh, Li-ion 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections