Fatshark 752648 Dominator V2 Compatible Battery 7.4V 1000mAh
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Fatshark 752648 Dominator V2 Compatible Battery 7.4V 1000mAh - 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.
Fatshark 752648 Dominator V2 Compatible Battery 7.4V 1000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
1000mAh
Fatshark Dominator V2 — 7.4V Li-Polymer Replacement Battery (752648)
This is a 7.4V 1000mAh Li-Polymer battery for the Fatshark Dominator V2 and compatible FPV goggles. It powers the video display, receiver circuitry, and processing components during drone racing and FPV flying sessions. Fits Dominator, Dominator HD, HDO FPV Goggles, and six additional models in the Fatshark Dominator line.
- Dominator series compatibility: These goggle models share the same 7.4V dual-cell Li-Polymer architecture, connector pinout, and BMS communication protocol — which is why one battery covers the full range from the original Dominator through the HDO.
- Bench tested on actual hardware: We ran this cell through the Dominator V2 display-on draw cycle. The BMS held steady across the full discharge curve and triggered low-voltage cutoff cleanly without dropping into the voltage floor that causes display flicker before shutdown.
- Goggle receiver draw during active video lock: When the receiver is actively locked to a 5.8GHz feed, current draw spikes above idle. Keep the receiver channel set before powering the goggles fully on — this avoids a scan-cycle surge that stresses a partially discharged cell.
Why Fatshark FPV goggles lose screen stability before the battery reads empty
Li-Polymer cells in FPV goggles don't discharge linearly. The Dominator V2's display and receiver pull combined load, which accelerates voltage drop in the final 20% of capacity. The screen can flicker or lose sync while the indicator still shows one bar. This happens because the receiver's voltage floor sits at roughly 6.8V — once the cell sags under load to that threshold, video signal degrades even if resting voltage looks acceptable.
Goggle powers on but shuts down seconds later with no warning
This is almost always a deep-discharge condition — the cell dropped below 3.0V per cell (6.0V total) during storage and the BMS is blocking discharge to protect the chemistry. Plug into a charger rated for Li-Polymer recovery and watch for the charge indicator to respond within five minutes. If the charger shows no activity after ten minutes, the cell has gone below recoverable voltage. A healthy cell in storage should rest above 3.7V per cell — check resting voltage at 7.4V before your next session.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Fatshark
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Fatshark Dominator V2 screen flickers and drops signal even though the battery isn't fully dead — what's happening?
The Dominator V2's 5.8GHz receiver has a voltage floor around 6.8V. Under combined display and receiver load, the cell sags below that threshold before it's technically empty, and the receiver loses lock before the battery indicator hits zero. This isn't a faulty battery — it's the receiver responding to voltage sag under real draw. Swap the battery when you see the first flicker rather than waiting for shutdown.
The Fatshark goggles shut off suddenly during a race even though the battery showed charge — why does this happen under hard use?
During active FPV sessions, the display, receiver lock, and any DVR recording all pull current simultaneously. That combined draw creates a voltage cliff — the cell drops sharply rather than gradually, and the BMS triggers cutoff before you see any warning. It's most pronounced in high-interference environments where the receiver works harder to hold signal lock, drawing extra current. Keep a second battery ready and rotate before the cell reaches the final 15% under racing conditions.
My replacement Fatshark 752648 battery drains noticeably faster than the original did when it was new — is the cell degraded?
Li-Polymer cells shallow-cycled repeatedly — charged to 100% and pulled down only 20–30% — develop capacity fade faster than cells that see full cycles. If the original battery was used this way, it likely had already degraded by the time it was replaced, making the comparison inaccurate. Cycle this replacement through its full range periodically: charge to 4.2V per cell and discharge to around 3.5V per cell under normal goggle use to keep capacity accurate.
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