MAX500 · Lift into place
Compact power for any site.
MAX500 delivers 492kWh and up to 420kW, with integrated EV fast charging up to 480kW. It is powerful enough for heavy plant, fleets and events, and compact enough to place almost anywhere.
Why MAX500
Compact power for any site
- Compact 10ft footprint, lifted into place on any site
- Up to 480kW DC charging and 125kW DC recharging
- Robust IP54 enclosure with IP67 battery packs
- Near-silent at 59dB, with zero local emissions
Lower Thames Crossing
Four MAX500s charge electric excavators with 240kW DC fast charging and no grid connection, for the Bouygues Murphy JV.
saved per week in diesel and generator costs
Where it is used: Construction and infrastructure, plant and equipment, fleet depots, events, commercial and industrial sites
What it does
Everything it can do, and how you can have it
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.
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.
Integrated, grid-tied or off-grid
DC 60, 120, 180, 240 or 480kW; AC 4 x 22kW. Two outlets, buffer or direct. DC recharging (125kW) lets MAX top up from any public or depot DC charger.
Deployed in minutes
Compact 10ft footprint with forklift pockets as standard and optional top lifting. No pad, fencing or groundworks. Classified UN3536 for simple transport.
Power control
Advanced energy and power transfer
PackFlex
Each pack runs through its own inverter, so the system keeps going if one goes offline, and charges and discharges at once.
StandardSyncFlow
Synchronises with the grid or a generator, transferring loads in under 40ms; peak shaving keeps a site within its limit.
OptionIsoCharge
Isolates sensitive loads from supply disturbances, with no back-feed. MAX carries demand while a small supply recharges it.
OptionIsoPass
Keeps critical loads powered if the system goes offline, routing supply straight to the load. Essential for live broadcast.
OptionPhaseFlex
Turns a single-phase connection into a stable three-phase output, enabling DC fast charging from even a small supply.
OptionSpecification
MAX500 technical specification
Full specification
| Rated capacity | 492kWh |
|---|---|
| Usable capacity | 450kWh |
| Battery packs | 6 |
| Chemistry | NMC or NCA, with optional LFP, in single or mixed chemistry |
| C-rate | Up to 4C (depending on inverters) |
| Continuous power | 210 or 420kW |
| Dimensions (L x W x H) | 3,050 x 2,590 x 2,444mm |
| DC charging (option) | 60, 120, 180, 240 or 480kW |
| 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: hire 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 fee |
Standard and options
| Mid Power (210kW) | High Power (420kW) | |
|---|---|---|
| Batteries | ||
| EV packs (NMC/NCA chemistry) | S (6) | S (6) |
| EV packs (LFP chemistry) | O (6) | O (6) |
| Power conversion | ||
| Bi-directional AC-DC power conversion | S | S |
| Liquid cooled inverters (35kW) | S (6) | S (12) |
| Heat pump with chiller | O | O |
| Power control | ||
| SyncFlow (250kW) | O | n/a |
| SyncFlow (500kW) | n/a | O |
| IsoCharge (3ph only) | O | O |
| PhaseFlex (1ph and 3ph) | O | O |
| IsoPass | O | O |
| Solar roof (440W) | O | O |
| Genset remote start terminal | S | S |
| Sockets (with MCCB) | ||
| 125A 3ph in | S | S |
| 125A 3ph out | S | S |
| 63A 3ph out | S | S |
| 32A 1ph in | O | O |
| Powerlocks (400A) in | O | O |
| Powerlocks (400A) out | O | O |
| Additional 63A 3ph out | O | O |
| 32A 3ph out | O | O |
| 63A 1ph out | O | O |
| 32A 1ph out | O | O |
| 16A 1ph out | O | O |
| External earth leakage detection (per outlet) | ||
| Manual (fixed or manually adjustable) | O | O |
| Modbus (remotely adjustable) | O | O |
| Safety | ||
| Multi-function protection sensor | S | S |
| Aerosol fire suppression (Stat-X) | O | O |
| EV charging | ||
| 22kW (x4) AC Type 2 | O | O |
| 60kW (2 x 30kW) DC CCS | O | O |
| 120kW DC CCS | O | O |
| 180kW DC CCS | O | O |
| 240kW DC CCS | O | O |
| 480kW DC CCS | O | O |
| DC recharging (125kW) | O | O |
| Structure | ||
| Forklift pockets | S | S |
| Lift from top | O | O |
| Appearance | ||
| Custom paint | O | O |
| Custom wrap | O | O |
| Custom decal | O | O |
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 fee 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
MAX500 at work
Use cases
Best-fit applications
Off-grid
Power the site.
Not the diesel bill.
Construction, infrastructure and plant
On and off-grid
Charge your fleet.
Skip the grid upgrade.
Depots, hubs, vans, trucks and buses
Off-grid
Quiet on set.
And on the fuel bill.
Film, TV, broadcast and live events
On-grid
Use your own power.
Cut your bill.
Commercial and industrial sites
Off-grid
Hire out hybrid power.
Burn half the fuel.
Power rental and plant hire fleets
On-grid
Keep the power on.
Lose the diesel.
Estates, gardens, zoos and heritageDownload
The MAX500 brochure
Full specification, standard and options, and where it is used.
Configure your MAX500
Choose the power version, charging and options, and we'll price it. Or tell us about your site and we'll recommend the right specification.
- Build your MAX online
- A free savings report
- A quotation from the Allye team
sales@allye.com+44 (0)20 805 06560