PPS-GD304 / GD305 / GD306 / GD405 / GD406, 3–4 kW Trolley Power Station

The GD304 platform is specified when solar is the primary charging source rather than an accessory. Its PV 65–450 V / 3–4 kW MPPT input accepts a full series string of panels without a separate charge controller, so a work camp or a mobile command unit can run for days on a fixed array. The GD304 (4019 Wh / 3000 W) and GD406 (5888 Wh / 4000 W) are the catalogue configurations; GD305, GD306 and GD405 are variants on the same chassis.

Where it fits

Construction and field sites, mobile clinics, outside broadcast, emergency command posts and off-grid cabins. Two AC outlets plus a 16 A industrial connector feed distribution boxes directly, and the 10 ms transfer lets the unit sit in front of equipment that cannot tolerate a mains interruption.

What to check before ordering

Confirm the PV string open-circuit voltage stays inside 65–450 V at the coldest expected temperature — that limit is the usual cause of field commissioning problems. Also confirm the model-specific capacity for GD305, GD306 and GD405; they share the enclosure but not the battery or inverter rating.

Product views

GD304 Series portable power station view 1

GD304 Series portable power station view 2

GD304 Series portable power station view 3

GD304 Series portable power station view 4

GD304 Series portable power station view 5

Models in this series: PPS-GD304, PPS-GD305, PPS-GD306, PPS-GD405, PPS-GD406. Photographs show the series enclosure; finish and port layout vary by configuration. Select a view to open the full-size image.

For fixed installations, see the all-in-one ESS range and the HC rack-mount LiFePO4 battery. The full product catalogue lists every series with its model table.

Key Features

4019 Wh or 5888 Wh LiFePO4 at 12.8 V / 25.6 V

3000 W / 4000 W rated, 6000 W / 8000 W peak, pure sine wave

High-voltage MPPT: PV 65–450 V, 3000 W / 4000 W max

1500 W / 2000 W mains charging, 10 ms UPS transfer

Bluetooth app monitoring and status display

QC3.0 × 2, PD 18 W × 2, 16 A industrial connector, AC × 2

IP54 wheeled draw-bar case, 670 × 450 × 310 mm

42 kg / 57 kg net — two-person lift, one-person roll

Applications

Field and mobile power

Mains, solar and vehicle charging in one unit, so a crew is not tied to a generator or a fixed supply.

Temporary backup

10 ms transfer keeps IT equipment, instruments and communications running through a mains interruption.

Off-grid sites

LiFePO4 cells and MPPT solar input support repeated daily cycling at remote locations.

FAQ

Can I connect solar panels directly?

Yes. The MPPT accepts PV 65–450 V and up to 3000 W on the GD304 or 4000 W on the GD406. Design the string so cold-weather open-circuit voltage stays below 450 V.

Is it a UPS?

It provides a 10 ms transfer, which protects IT and instrumentation loads. It is not a zero-break online UPS.

What is the difference between GD304, GD305, GD306, GD405 and GD406?

They are capacity and inverter-output variants of the same IP54 draw-bar chassis. The catalogue gives full data for GD304 and GD406; ask for the model datasheet for the other three.

How weatherproof is IP54?

Protected against dust ingress and water splashes from any direction. It is designed for covered outdoor use, not for standing rain or immersion.

Specification reference

Parameter	PPS-GD304	PPS-GD406
Battery
Capacity	4019.2 Wh	5888 Wh
Cell chemistry	LiFePO4
Nominal voltage	12.8 V	25.6 V
Total capacity	1256000 mAh	1840000 mAh
Inverter & output
AC rated power	3000 W	4000 W
AC peak power	6000 W	8000 W
AC voltage / frequency	220/230/240 V, 50/60 Hz
UPS transfer	10 ms
Monitoring	Bluetooth app
Input & charging
AC input	1500 W max	2000 W max
MPPT solar input	PV 65–450 V, 3000 W max	PV 65–450 V, 4000 W max
Ports
USB	QC3.0 × 2
USB-C PD	PD 18 W × 2
Industrial connector	AC 16 A
AC outlets	2
Protection
Ingress rating	IP54
Operating temperature	-10 °C to 50 °C
Protection	Under/over voltage, over current, over temperature, overload, over discharge, short circuit
Mechanical
Product size	670 × 450 × 310 mm
Net weight	42 kg	57 kg
Package size	740 × 510 × 350 mm
Gross weight	57 kg	75 kg

Specifications subject to the latest factory data. Final configuration is sized against the actual load, backup runtime and site power conditions — this table is for pre-selection only.