Name: Allye MAX300
Brand: Allye

Why MAX300

Big power that tows anywhere

Tows on a standard licence, under 3.5t
Fits a parking space, under 2m tall
Up to 400kW DC charging and 125kW DC recharging
Near-silent at 59dB, with zero local emissions

Proven

Horizon Plant, Ireland

Horizon Plant saves £1,500 a week (70% of fuel) running MAX300 hybrid with tower crane generators.

70%

less fuel at Horizon Plant

Where it is used: Film and TV, events, broadcast, construction welfare, small depots, retail and commercial sites, standby power

What it does

Everything it can do, and how you can have it

On-grid · Stationary

Battery as a buffer

Charge off-peak or from solar.
Boost peak power above your limit.
Back up the site in under 40ms.
Earn from grid flexibility markets.

Off-grid · Mobile

Battery as a generator

Charge from DC, a MAX or a generator.
Power quietly, zero local emissions.
Top up from a generator if needed.
Save fuel, run hours and emissions.

EV charging

Integrated, grid-tied or off-grid

DC 60, 120, 240 or 400kW (400kW on Mid and High Power, 800V architecture); AC 4 x 22kW. Two outlets, buffer or direct. DC recharging (125kW) lets MAX top up from any public or depot DC charger.

Tow and Go

Deployed in minutes

Under 3.5t on its integrated trailer, towed on a standard licence. Fits a parking bay and stands under 2m, designed to meet planning. Classified UN3536 for simple transport.

MAX300 with integrated DC charging starts at £99,000 excluding VAT, depending on specification.

Allye MAX300 recharging from a public DC fast charger

Recharge in an hour

MAX300 can be specified with 125kW DC recharging, so it recharges from a public or depot DC fast charger in a little over an hour. Top up and go anywhere, with zero diesel.

MAX300 alongside MEV

MAX300 moves. MEV stays put.

The MAX300 is the mobile member of the platform: towed on its own trailer on a standard car licence, or fixed on site, powering sites and feeding chargers. MEV is a dedicated, moveable charger that stays put at the depot. Many fleets use both: MEV for the home fleet, MAX300 for outstations, events and the site itself.

An Allye MEV charging cars at an office car park while a MAX300 stores energy for the site — One site, two jobs: MEV charging the fleet, MAX300 powering the site.

An Allye MAX300 on its trailer beside an Allye MEV at a depot — MAX300 tows to outstations; MEV stays at base for the home fleet.

	MAX300	MAX300 with DC charging	MEV
Job	Stores and supplies energy	Stores energy and charges vehicles	Charges vehicles
Moves	Towed on a standard car licence, or fixed	Towed on a standard car licence, or fixed	Fixed in use; lifted out and re-sited
Vehicle charging	Feeds separate chargers	Integrated, up to 400kW DC	Integrated, 200 or 300kW DC
Site power	Yes	Yes	No, charging only
Best for	Construction, events, film, sites that move	Temporary sites and mobile fleets	Depots and fleet bases

Power control

Advanced energy and power transfer

PackFlex

Each pack runs through its own power path, so the system keeps going if one goes offline, and charges and discharges at once.

Standard

SyncFlow

Synchronises with the grid or a generator, transferring loads in under 40ms; peak shaving keeps a site within its limit.

Optional

IsoCharge

Isolates sensitive loads from supply disturbances, with no back-feed. MAX carries demand while a small supply recharges it.

Optional

IsoPass

Keeps critical loads powered if the system goes offline, routing supply straight to the load. Essential for live broadcast.

Optional

PhaseFlex

Turns a single-phase connection into a stable three-phase output, enabling DC fast charging from even a small supply.

Optional

Specification

MAX300 technical specification

Full specification

Rated capacity	328kWh
Usable capacity	300kWh
Battery packs	4
Chemistry	NMC or NCA, with optional LFP, in single or mixed chemistry
C-rate	Up to 4C (depending on inverters)
Continuous power	88, 140 or 280kW
Unbalanced load	Each phase can be loaded individually with 10.5kW (11.7kVA)
Dimensions (L x W x H)	2,950 x 1,740 x 1,990mm
DC charging (option)	60, 120, 240 or 400kW
AC charging (option)	4 x 22kW
DC recharging (option)	125kW
System architecture	400/800V
Cycle life	3,500 (NMC/NCA or mixed) or 5,500 (LFP) to 70% SoH
Battery life	12 years
Peak power	110% for 10 min, 120% for 1 min; short circuit 200ms
AC rated voltage	400/415V three-phase; 230/240V single-phase
Frequency	50/60Hz, software configurable
Pass-through current	125A (higher up to the limit with SyncFlow)
System efficiency	>94% from 25% to 100% load
Cooling	Integrated liquid cooling for batteries and converters
Working temperature	-10°C to 40°C (chiller or heater for extremes)
IP rating	IP54 (battery packs IP67)
Noise	59dB
Fire prevention	Multi-parameter sensing for VOC, shock and environment; full cell monitoring; pyro fuse in every pack
Fire mitigation	Stat-X aerosol suppression (option) with water, plus battery flood and vent ports
Communication	RS485 / CAN / 4G, LTE; Modbus TCP / CAN / API
Paralleling	Unlimited, and models can be mixed on one site
Connections	125A in, 125A and 63A out as standard; Powerlocks, busbars and other sockets optional
Transport	Classified UN3536: users display the plate and Class 9 label, with no wider ADR obligations
Certification	UKCA/CE; IEC 62619, IEC 62477-1, IEC 62933-5-2, UN38.3; designed to UL9540A; packs ECE R100; G99 pending
Warranty	3 years, or 5 years with the platform package

Standard and options

	Low Power (88kW)	Mid Power (140kW)	High Power (280kW)
Batteries
EV packs (NMC/NCA chemistry)	S (4)	S (4)	S (4)
EV packs (LFP chemistry)	O (4)	O (4)	O (4)
Power conversion
Bi-directional AC-DC power conversion	S	S	S
Air cooled inverters (22kW)	S (4)	n/a	n/a
Liquid cooled inverters (35kW)	n/a	S (4)	S (8)
Heat pump with chiller	n/a	O	O
Power control
SyncFlow (250kW)	n/a	O	n/a
SyncFlow (500kW)	n/a	n/a	O
IsoCharge (3ph only)	O	O	O
PhaseFlex (1ph and 3ph)	O	O	O
IsoPass	O	O	O
Solar roof (220W)	O	O	O
Genset remote start terminal	S	S	S
Sockets (with MCCB)
125A 3ph in	S	S	S
125A 3ph out	S	S	S
63A 3ph out	S	S	S
32A 1ph in	O	O	O
Powerlocks (400A) in	O	O	O
Powerlocks (400A) out	O	O	O
Additional 63A 3ph out	O	O	O
32A 3ph out	O	O	O
63A 1ph out	O	O	O
32A 1ph out	O	O	O
16A 1ph out	O	O	O
External earth leakage detection (per outlet)
Manual (fixed or manually adjustable)	O	O	O
Modbus (remotely adjustable)	O	O	O
Safety
Multi-function protection sensor	S	S	S
Aerosol fire suppression (Stat-X)	O	O	O
EV charging
22kW (x4) AC Type 2	O	O	O
60kW (2 x 30kW) DC CCS	O	O	O
120kW DC CCS	O	O	O
240kW DC CCS	O	O	O
400kW DC CCS (800V only)	n/a	O	O
DC recharging (125kW)	n/a	O	O
Structure
Integrated trailer	O	O	O
Forklift pockets	S	S	S
Lift from top	O	O	O
Appearance
Custom paint	O	O	O
Custom wrap	O	O	O
Custom decal	O	O	O

S StandardO Optionn/a Not availablePrices of options confirmed with quotation. Units are delivered painted solid white unless otherwise specified.

Usable capacity at 100% pack state of health; average delivered state of health is 94%. Any single or mixed chemistry can be specified, which affects total capacity; a single-chemistry LFP system reduces capacity by approximately 25%. The platform package is a single payment covering the first three years from delivery and extends the warranty to 5 years. All specifications are subject to change without notice.

Case studies