Battery Energy Storage

JAM Pro

100–250kWh of clean, silent power. Our most-hired unit — engineered for demanding sites and extended deployments where diesel is no longer the only answer.

Most Popular LiFePO₄ Chemistry IP54 Rated UK Designed

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250kWh

Peak Capacity

70%

Fuel Saving vs Diesel

4,000+

Charge Cycles

0dB

Silent Operation

125 kW Continuous Output

614.4V DC Nominal Voltage

IP54 Weather Protection

–20°C → +55°C Operating Range

15 yr Design Life

The Unit

Built for sites that can’t afford downtime

The JAM Pro is a containerised battery energy storage system designed for the realities of UK site work — unpredictable weather, tight access, round-the-clock power demand. Deploy it alongside a generator or solar array and cut diesel consumption by up to 70%, without sacrificing reliability.

The unit arrives pre-charged, ready to power on delivery. A single 63A 3-phase connection feeds your site distribution board. No engineer call-out, no commissioning window — your team can have it live in under an hour.

Zero Thermal Runaway

LiFePO₄ chemistry is inherently stable. No thermal runaway risk under charge, discharge or physical impact.

Smart BMS

Integrated battery management monitors cell balancing, temperature, SOC and SOH in real time. Remote telemetry available.

Hybrid Ready

Full MPPT solar charge input and generator sync port. Build a fully managed hybrid power system on any site.

Forklift Deployable

Standard pallet footprint with integrated forklift pockets. Positioned by telehandler — minimal setup time on site.

24/7 UK Support

Every hire includes round-the-clock technical support from our UK-based team. No call centres, no waiting queues.

Scalable Capacity

Start with 100kWh and scale to 250kWh. Multiple units can be paralleled for larger site demands.

Full Specifications

Capacity Range	100 – 250 kWh
Nominal Voltage	614.4V DC
Max Continuous Output	125 kW
Peak Output	150 kW (30 min)
AC Output	63A 3-phase CEE
Single Phase Output	32A / 240V
Charge Input	63A 3-ph / Solar MPPT
Cell Chemistry	LiFePO₄ (LFP)
Cycle Life	4,000+ @ 80% DoD
Round-Trip Efficiency	>92%
Operating Temperature	–20°C to +55°C
IP Rating	IP54
Enclosure	Powder-coated steel
Dimensions (L×W×H)	1,200 × 800 × 1,950 mm
Weight	1,240 kg
Transport	Flatbed / forklift pockets
BMS	Integrated smart BMS
Display	Colour touchscreen
Connectivity	4G / Wi-Fi telemetry
Compliance	UKCA / CE / IEC 62619
Thermal Runaway Risk	Zero
Noise Output	0 dB (silent)
Support	24/7 UK-based

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Ideal For

Where the Pro works hardest

Construction

Power welfare units, tools, lighting and tower cranes alongside or instead of a diesel generator. Quiet enough for noise-sensitive urban sites.

Events & Festivals

Silent operation means it runs inside the perimeter. Power stages, lighting rigs and production infrastructure without the noise or fumes.

Film & TV

Zero emissions and zero noise — no sound bleed into takes, no fume risk on enclosed locations. The production industry standard is moving to BESS.

Telecoms

Backup power for mast and exchange infrastructure. The Pro’s 4,000-cycle life and remote telemetry make it ideal for unmanned deployments.

Emergency Services

Rapid-deploy resilience power for command units, field hospitals and incident management. Reliable, safe and zero-emission at the scene.

Product Range

Compare the JAM range

JAM Lite

20 – 50 kWh

Compact and portable. Ideal for smaller sites, short-duration events and locations where access is tight.

View JAM Lite →

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JAM Pro

100 – 250 kWh

Our most-hired unit. Handles the full range of construction, events and infrastructure power demands.

JAM Pro ✓

JAM Max

500 kWh+

Grid-scale storage for major infrastructure, large events and long-term off-grid deployments.

View JAM Max →

Ready to hire?

Put the JAM Pro on your site

UK-wide delivery. Flexible hire terms from 1 day to 12 months. 24/7 support included as standard. No hidden costs.

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