Independent buying guides for RV upgrades and maintenance

Upgrade your RV for the road

Real gear picks for RV power, water, comfort, and life on the road

The standard house battery voltage in most RVs
12 V
A common lithium bank, about 2,560 Wh at 12.8 V nominal
200 Ah
A common roof solar array; daily output depends on sun hours
400 W

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12 V power math

  • Watt-hours amp-hours x volts
  • Amps watts ÷ volts
  • 60 W load at 12 V about 5 A
  • Usable capacity lead-acid about 50%, lithium about 80 to 100%

Rules of thumb. Check your battery maker's depth-of-discharge rating and wire for the real current.

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