12V · recreational
Specifying a Class B RV pack without the usual template paragraph
People land on a Class B RV page because the last bank died early or would not charge. Class B van batteries. 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 We do not publish a star rating we cannot source.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
- Weight in a van or trailer is payload. A 70% mass cut versus flooded is the reason people swap, not a cycle-life slogan.
- Boondocking math fails when someone sizes from a lead-acid 50% rule and then runs an air conditioner.
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 Class B RV constraints above should still make sense. That is the point.
What to spec for Class B RV
Class B van 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.
12V catalog SKUs
12V 100AH Lithium Ion Battery
100AH
$1,499 listed
12V 10A Lithium Battery Charger
10A
$299 listed
12 Volt Lithium Batteries
12V
$999 listed
Prices are catalog list from our product file. Custom packs are quoted.
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 Class B RV lithium bank?
Watts × hours, then divide by voltage and by 0.8 if you want 80% depth of discharge. Add the worst ambient. That beats any calculator widget.
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.
Customer marks shown as published by ChargeX. Ask sales for program context; this page does not invent a contract number.