LIC supercapacitor module with nickel busbars seated in an AI server power shelf

LIC Hybrid Supercapacitor Modules

Millisecond backup power for every AI rack

Racks now draw 132–142 kW and shift load in milliseconds while the grid answers in minutes. CapStack laser-welds LIC modules that bridge that gap — cell to busbar to test report.

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1–50 mstransient tier

500k+cycle class @3.5 V

−40 °Ccold start

±5%C/ESR sorting

Why LIC, in numbers

The cell economics of ride-through

30%

Peak grid demand cut by rack-integrated storage — NVIDIA GB200/GB300-class PSUs

65 J/GPU

Energy storage now built into GPU power supplies — capacitors take ~50% of PSU volume

1–90 min

Grid generation ramp time — rack-level transients must be absorbed locally

10×

LIC energy vs same-size EDLC — with 3.8/4.0 V cells instead of 2.7 V

Product line

Three ways to buy ride-through

48V · AI BACKUP

RackBridge 48V

48.6 V / 166 F class · 130 A continuous · per-cell telemetry. Built for power shelves and BBU bays.

125–182V · HIGH VOLTAGE

StackLine HV

Up to 182.4 V per module, cascade to 1000 V-class systems. Fused busbars, CAN monitoring, forced-air option.

Open-frame custom supercapacitor stack with braided busbar links

16–108V · CUSTOM ODM

Your voltage, our line

Cell-to-cell custom stacks: balancing choice, structure, connectors and BMS engineered to your rack.

All five product lines →

RackBridge 48V module installed in a data center power shelf

Spotlight · RackBridge 48V

Spec, not slogans

The module your power shelf talks to: welded busbars instead of cabling, active balancing across all 16 cells, and a test report with every serial number.

Rated voltage	48.6 V class (16S)
Capacitance class	166 F (±5% sorted)
Continuous current	130 A (25 °C, natural air)
Surge current class	> 500 A (< 5 s)
Balancing	Active / passive, module-to-module auto
Telemetry	Per-cell voltage + NTC, CAN 2.0B
Operating temp	−40 … +65 °C
Alarms	Over-charge / over-discharge / over-temp, error output

Full datasheet

How we build

From spec to shipment

Spec review

Send rack power profile and ride-through window. We map it to cell count, capacitance and ESR targets.

Cell selection & sorting

Tier-1 LIC cells, C/ESR dual-parameter measured, binned to a ±5% module window on our sorting line.

Sample & qualification

First articles with balancing, structure and connector options. Full test data ships with samples.

Mass production

Laser welding, BMS assembly, aging and 100% final test. Standard lead time 4–6 weeks.

Industries

Where the milliseconds matter

AI Data Center

Rack-level ride-through and peak shaving for GB300-class training clusters.

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Smart Grid

Voltage-sag ride-through and power quality for substations and sensitive plants.

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Wind Pitch

Safety feathering at −40 °C when the grid drops — no cold-soaked batteries.

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Railway

Regenerative braking recovery rated for hundreds of cycles a day.

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Port & Crane

Potential-energy recovery that flattens peak demand on every lift cycle.

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Automotive 48V

Safety-redundancy power for steering, braking and ECUs through cranking dips.

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Field posture

Built for integrators who get audited

Rack integrator · pilot line

48V module fleet qualified for a hyperscaler-tier rack program, targeting a 15-year design-life class in a sealed shelf.

±5% fleet consistency

Wind OEM · pitch retrofit

Pitch-backup modules specified for cold-site fleets where lead-acid fails below −20 °C and access windows are short.

−40 °C cranking

UPS system house · bridge tier

Supercap bridge modules replacing battery strings for seconds-to-minutes ride-through ahead of genset start.

500k+ cycle class

UL 810A cell routeIEC 62391 methodsRoHS / REACH / WEEECE DoCUN 3499 shipping docs

Start the conversation

Tell us your rack power and ride-through target.

Every RFQ answered within 48 hours — with a cell count, a capacitance number and a lead time, not a brochure.

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