DJI Agras T55 vs DJI Agras T50

This comparison uses DJI Agriculture's product pages and specifications. Capacity, flow, field-rate, sensing and charging figures are DJI's, measured under its stated conditions. DJI also notes that payload limits can fall with altitude, so sea-level capacities are not universal.

The T55 delivers 40 L/min with its standard two nozzles and up to 50 L/min with the optional four-nozzle mist kit. The T50 gives 16 L/min with two sprinklers and 24 L/min with four. The T55 also carries 50 L (50 kg) against 40 L (40 kg), 25% more liquid by tank volume.

That does not mean the T55 covers twice the hectares. Area per hour depends on liters per hectare, speed, swath width, turns, refill time and battery swaps. At high application rates pump flow limits you; at low rates the bottleneck moves to batteries, refills and field shape. Multiplying the T50's 21 ha/h by the flow increase would be misleading.

For the T50, DJI lists up to 21 ha/h in field operations, up to 4 ha/h in orchards and 1,500 kg of granules per hour for spreading, all under test conditions rather than as farm-wide daily averages. DJI's global T55 pages give no comparable figure.

The T55 uses the DS80L system: 80 L volume, 55 kg payload, up to 400 kg/min of compound fertilizer and a 3–10 m effective width depending on material. The T50 carries 50 kg in a 75 L tank at up to 108 kg/min. Refill logistics and flight cycles will cap real output well below either maximum discharge rate.

The T50's spec is explicit: slopes up to 50° in mapping-free operation, altitude detection from 1 to 50 m and a stabilization range of 1.5 to 30 m. DJI's T55 FAQ confirms radar-based terrain following, including falling back to radar when vision sensors are dirty or at night, with possibly reduced performance. DJI gives no maximum slope for the T55, so none is assumed here.

Both list ±10 cm horizontal and vertical hover accuracy with RTK. The T55 works with the newer D-RTK 3 AG base station, which lists Network RTK calibration accuracy of 0.8 cm + 1 ppm horizontal and 1.5 cm + 1 ppm vertical, L-BAND support and a 15 km FCC / 8 km CE-JP broadcast range.

The T55's safety system measures out to 60 m and bypasses obstacles at up to 13.8 m/s. Its tri-vision system covers 360° horizontally and 180° vertically, backed by radar. The T50 uses 360° phased-array radar from 1 to 50 m and binocular vision to 29 m, with obstacle sensing rated for horizontal speeds up to 10 m/s. Both depend on light, weather and the obstacle itself.

The T55's standard battery is the lighter DB1050 (20 Ah), with the DB1580 (30 Ah) as an option. DJI lists 8–9 minutes from 30% to 95% for the DB1050 on the D8000iE generator (6.5 kW) or C7000 (up to 7 kW on three-phase input).

The T50 uses the 30 Ah DB1560. Its D12000iE generator and C10000 supply provide up to 9 kW and fully charge the battery in about 9–12 minutes. Raw charging power stays with the T50, even though the T55's smaller battery has a shorter published partial charge.

The optional DL100 lifting system carries a 40 kg operating payload on a 10 m standard cable. The T50 has no equivalent, so if you move materials as well as spray, the T55 is the only choice here.

Upgrade if your crew keeps stopping to refill, can't hold a high-volume application rate at 16–24 L/min, needs more spreading throughput or wants lifting. If the T50 already covers your hectares in the available window, a bigger aircraft won't pay back unless the extra capacity turns into saved labor or more treated area. See also our Agras T55 specs analysis and the status of spray drones in the US.