Chargex Battery

12V · application

Virtual Power Plant LiFePO4: size the load, then the voltage

People land on a Virtual Power Plant page because the last bank died early or would not charge. VPP participation. We start from load, charger, and temperature — then cells.

CAGE 93CZ2

UN38.3 transport docs on request. DUNS 109774429. We do not publish a star rating we cannot source.

This rail: House banks, Group 24/27/31 drop-ins, small inverters

Typical size: Typical 100–400Ah; parallel for more

What actually fails

  • The job is usually “it died when we needed it,” which means the last pack was undersized or cooked.

How we quote it

  • Write down volts, hours, and the worst ambient. That is the quote.

12V on this URL

Sensible up to roughly 2 kW continuous inverter load. After that, step up voltage or parallel with thicker cable.

If you delete the voltage, the Virtual Power Plant constraints above should still make sense. That is the point.

What to spec for Virtual Power Plant

VPP participation If you cannot name the load, start with a call, not a catalog page. Voltage overlay on this URL is only there because the equipment rail is real — delete the voltage and the duty-cycle advice should still read as a sentence. Sensible up to roughly 2 kW continuous inverter load. After that, step up voltage or parallel with thicker cable.

Spec note

If you cannot name the load, start with a call, not a catalog page.

Questions we actually get

How do I size a Virtual Power Plant lithium bank?

Start from the load you cannot lose. Everything else is optional capacity. We will convert that into Ah at the voltage you already have.

Can I keep my existing charger?

If it can hold a lithium charge curve (higher absorb, little or no float), maybe. Send the charger model. A lead-acid-only charger is how people cook packs.

What paperwork can you send?

UN38.3 is the usual transport packet. CAGE 93CZ2 and DUNS 109774429 for government bids. Other marks depend on the SKU — we send PDFs we actually have.

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Customer marks shown as published by ChargeX. Ask sales for program context; this page does not invent a contract number.