Chargex Battery

12V · recreational

Expedition lithium banks — duty cycle before brochure cycle life

Expedition is a duty cycle, not a keyword. Expedition vehicle batteries. If that sentence is still true after you delete the words “military-grade,” we can quote it.

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 We do not publish a star rating we cannot source.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

  • Boondocking math fails when someone sizes from a lead-acid 50% rule and then runs an air conditioner.
  • Weight in a van or trailer is payload. A 70% mass cut versus flooded is the reason people swap, not a cycle-life slogan.

How we quote it

  • Add up inverter watts and hours, then pick voltage so cable stays sane. 12V is fine until the inverter is not.
  • Pair the bank with enough solar that you are not generator-idling every afternoon.

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 Expedition constraints above should still make sense. That is the point.

How we quote Expedition work

Expedition vehicle batteries Most RV complaints are undersized banks, not bad cells. Write down fridge, furnace, and inverter hours before you pick Ah. 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

Most RV complaints are undersized banks, not bad cells. Write down fridge, furnace, and inverter hours before you pick Ah.

Questions we actually get

How do I size a Expedition 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.

NASASpaceXU.S. NavyJPL

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