Energy Storage Systems & LiFePO4 Battery Packs

The battery is now the cheap part

What decides whether a storage project succeeds has moved. Cells are commodities; the engineering around them is not. Thermal design, BMS communication, enclosure consistency, protection coordination and the documentation that clears customs — those are where projects fail and where the money is actually made.

HighIdea is a factory, not a trading company. Every pack and every system on this site is built on our own Shenzhen lines, which is what allows a specification to be reproduced a year later rather than re-sourced.

The range

Platform	Capacity	Where it fits
12 V packs	50–300 Ah	RV, marine, golf cart, off-grid — drop-in lead-acid replacement
24 V packs	50–300 Ah	Mobility drives, light industrial machines, 24 V inverter banks
48 V packs	10–280 Ah	UPS, telecom DC plants, hybrid solar — the industrial workhorse
High-voltage stacks	100–800 V	Three-phase commercial inverters, container ESS, traction
Residential ESS	5–30 kWh	Wall-mount and stackable home batteries
Commercial ESS	100 kWh – MWh	Air- or liquid-cooled cabinets, containerised BESS
Rack & cabinet systems	3U–4U modules	Integrators who want a module, not our enclosure
Portable power	2–20 kWh	Site power, events, mobile offices, emergency supply

OEM and ODM is the actual business

Most of what leaves this factory does not carry our name. Brand owners come to us with an inverter platform, an existing industrial design and a market requirement, and we deliver a product: enclosure design and tooling, BMS selection and firmware, inverter protocol matching, tested datasheet figures and the certification documentation the market requires.

What that means in practice:

Frozen mechanical envelope. The mounting holes, depth and mass stay the same batch to batch, so your enclosure design, shipping carton and mounting jig stay valid. We publish changes in advance and support the old version alongside the new one for a defined period.
Protocol loaded at the factory. We cannot test on your inverter, but we verify on the same model — shipping a battery that reports a communication fault on first power-up is a support cost nobody wants.
Cell and module production stays in-house. Your specification is not dependent on a third-party assembler's process control.

See OEM / ODM for the ordering process, tooling and lead times.

Sizing, not selling

A battery specified for a duty cycle it never sees is money wasted; one specified below what it actually sees is a warranty claim waiting to happen. Two systems with the same nameplate capacity can need completely different batteries:

A telecom backup pack sits at full charge for weeks and then discharges hard for four hours.
A solar pack cycles between 20 % and 90 % state of charge every single day.
A marine pack sits idle for months, then is asked for a high starting current in a damp, salt-laden environment.

The application guides set out the sizing logic for each case, and the knowledge base covers chemistry selection, pack sizing, BMS specification, certification and cycle-life planning in detail.

Send your load profile, required runtime, inverter or PCS and target market through the contact form and our engineers will return a recommended configuration with factory-direct pricing.

What to check before you commit

Continuous versus peak current. The BMS rating sets what the pack can deliver, and it must cover the load's starting surge — not its running watts.
Charge profile. LiFePO4 needs 14.2–14.6 V absorption per 12 V block, no equalisation and no desulfation. A lead-acid charger will shorten the pack's life.
Charging below 0 °C. Charging LiFePO4 in freezing conditions causes permanent damage. If the market is cold, specify the low-temperature cut-off version.
Depth of discharge. Cycle life is specified at a stated depth. A system that discharges to empty every day will not reach its rated cycle count, whatever the datasheet says.
Documentation. UN38.3 and MSDS are not optional for lithium shipping, and the certificates have to name the finished product your customer is buying.

Certificates, test report numbers and shipping documents are listed on the Certifications page.

FAQ

What does HighIdea actually build in the storage range?

Four families: LiFePO4 battery packs from 12 V to 800 V (12 V, 24 V and 48 V drop-ins, plus high-voltage series stacks), residential energy storage from 5 kWh wall units to 30 kWh stacks, commercial and industrial systems from 100 kWh cabinets to multi-MWh containers, and portable power stations from 2 kWh.

Do you make the battery, or buy cells and assemble?

We buy cells from tier-one cell makers and build the packs, modules, enclosures and systems ourselves — cell grading, welding, BMS integration, thermal design and end-of-line testing all happen in our plant. That is what makes an OEM specification reproducible rather than dependent on an assembler.

Can you build to our inverter and our grid code?

Yes, and most projects are. We load the inverter communication protocol (Pylontech, GoodWe, Deye, Growatt, Victron, SolaX, SMA and others) at the factory, and build to a stated grid code or certification target when you tell us which market the product is going to.

What is the smallest order you will take?

For standard pack models, MOQ is typically 10 units. For OEM platforms with tooling or custom firmware, the first order is normally one to two hundred units depending on the enclosure and certification cost. Samples are available for evaluation before a platform commitment.

How do you size a system rather than just quote a product?

Send the load profile or interval data, the required autonomy, the inverter or PCS you are pairing with, and the ambient conditions. Our engineers return a sizing calculation, a single-line diagram and a configuration with a price — basic engineering sizing is free of charge.

What documentation comes with a shipment?

UN38.3 transport test reports and MSDS for the battery platform, sea-transport documentation on request, and the certificates that apply to the model (CE Low Voltage Directive, UL, IEC 62619 as applicable). Certificates and reports are supplied with the quotation so your forwarder can clear the shipment without a round of document chasing.