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DJI Dock 4 vs DJI Dock 3

DJI Dock 4 vs DJI Dock 3

Last updated on

14th October

The main difference between DJI Dock 4 and DJI Dock 3 is how they prepare an aircraft for its next mission. Dock 4 automatically swaps the Matrice 5TD battery, while Dock 3 recharges the battery in its Matrice 4D or Matrice 4TD aircraft. That makes the time between missions a central question when choosing between them.

Dock 4 also changes the aircraft and communications setup. Dock 3 remains relevant where its capabilities fit the mission and an existing deployment already works well. This comparison looks at the practical differences for UK teams, including the changes that could justify an upgrade.

DJI Dock 4 and DJI Dock 3 compared

Feature	DJI Dock 4	DJI Dock 3
Aircraft	Matrice 5TD	Matrice 4D or Matrice 4TD
Between missions	Automatic battery swap	Aircraft battery recharges in dock
Swap stage	Less than 25 seconds	No automated swap
Operational turnaround	Less than 45 seconds stated	Charging depends on battery state
15% to 95% charge at 25°C	27 minutes	27 minutes
Dock protection	IP56	IP56
Dock temperature range	-40°C to 50°C	-30°C to 50°C
Dock weight	66 kg excluding aircraft and stored batteries	55 kg excluding aircraft
RTK arrangement	Via separate O4 Ground Station	Built into dock
Backup power	Stored aircraft batteries	Built-in backup battery

Comparison based on the supplied DJI Dock 4 technical matrix and DJI’s Dock 3 specifications. Timings describe different stages of operation and should not be treated as equivalent tests.

Battery swapping is the main workflow change

On Dock 3, the aircraft stays in the dock while its battery recharges. The 27-minute figure covers charging from 15% to 95% at 25°C. It does not mean every mission requires exactly 27 minutes on the ground; the remaining charge and readiness threshold affect the wait.

Dock 4 separates that charging work from the aircraft. Its four bays hold up to three stored batteries, leaving one bay to accept the depleted battery. Two batteries can charge simultaneously while a ready battery is used for another flight.

For incident response or closely spaced inspections, this could reduce the waiting period between useful missions. For a site flying one scheduled route with a long gap before the next, the practical gain may be smaller. Compare the busiest part of your schedule and include the possibility that no stored battery is ready.

DJI lists the swap stage at less than 25 seconds and full operational turnaround at less than 45 seconds. Neither figure is a guarantee of uninterrupted aerial coverage from one aircraft.

The aircraft upgrade changes the evidence you can collect

Dock 4 is paired with the Matrice 5TD. Against the thermal Matrice 4TD, it offers native 1280 × 1024 thermal resolution instead of 640 × 512, an 11× telephoto view instead of 7×, and a stated maximum flight time of 59 rather than 54 minutes.

The Matrice 4TD also has a processed 1280 × 1024 UHR thermal mode. That is useful to distinguish from the Matrice 5TD’s native capture when reviewing image quality. Our DJI Matrice 5TD vs Matrice 4TD article covers the sensor differences in more detail.

Dock 3 also supports the Matrice 4D, which is aimed at mapping work and has a different camera specification. A thermal aircraft comparison alone will not answer the equipment question for a mapping team. Start with the deliverable you need, such as an inspection image or a survey dataset.

Connectivity needs a fresh site assessment

Dock 4 uses a separate DJI O4 Ground Station for transmission and RTK positioning, alongside built-in dual 4G. Its position, cabling and network access need to be included in the site design. Dock 3 has RTK built into the dock and can use the separately sold DJI Cellular Dongle 2 for cellular connectivity where supported.

Compare regional transmission specifications consistently. The detailed aircraft matrices list a 12 km CE maximum for both generations; the 40 km figure in Dock 4 materials is associated with IC. A UK upgrade case should not promise a jump from 12 km to 40 km simply by mixing regional figures.

Measured coverage at the site matters more than a maximum headline distance. Buildings, terrain and interference can affect the link, and the authorised flight area is a separate consideration.

Installation and weather limits

Both docks carry an IP56 rating, and both thermal aircraft carry IP55. Dock 4 extends the stated dock operating temperature range to -40°C, compared with -30°C for Dock 3. The aircraft has its own temperature specification, which should be checked separately.

An existing Dock 3 location still needs review before a Dock 4 installation. The dock dimensions, weight, communications hardware and electrical requirements change. DJI’s supplied materials also state that Dock 3 power cables are not compatible with Dock 4. Budget for a site assessment rather than assuming the hardware can simply be exchanged.

Vehicle deployment and planned features

DJI documents vehicle-mounted deployment for Dock 3, with installation and operating conditions. The supplied Dock 4 roadmap schedules vehicle deployment and a car kit for January 2027. Treat those Dock 4 capabilities as planned until their release is confirmed.

That distinction matters if a vehicle-based operation is your immediate priority. Compare the functions available on the firmware and equipment you will actually receive.

When should you consider upgrading

Dock 4 merits a closer look when missions are frequently delayed by charging, or when the Matrice 5TD’s imaging capabilities address an evidence gap in your current work. Define a test around those needs: time the full mission cycle and inspect sample data from the distances you normally use.

Keeping Dock 3 may be sensible when the current system meets your schedule and produces the required data. Account for installation changes, batteries, accessories, training and software when assessing the cost of migration. A newer specification only creates value if it improves the operation you need to run.

UK pricing and operating approvals

Contact Coptrz for a tailored UK quotation covering the complete deployment. Share your existing equipment, mission schedule and any constraints at the proposed site so we can discuss a like-for-like scope.

The CAA requires authorisation for Specific category operations. When changing equipment, assess whether your existing authorisation and operating documentation cover the proposed system and missions.

Frequently asked questions

It is a different system built around the Matrice 5TD. Plan a compatibility and site review covering the aircraft, batteries, power, communications and software before replacing an installation.

Both technical matrices list 27 minutes from 15% to 95% at 25°C. The key change is that Dock 4 can fit another charged battery while depleted batteries recharge.

Choose against mission frequency, required imagery and deployment conditions. The DJI Dock 4 guide explains the new system in more detail; Coptrz can help scope the options against your sites.

Compare a deployment with Coptrz

Speak to our DJI specialists or call 0330 111 7177. Bring your current flight schedule and the information your team needs from each mission, and request a tailored UK quotation.