Heeler RV Electrical

HEELER RV ELECTRICAL · FIELD REFERENCES

RV ELECTRICAL
TECH RESOURCES.

Practical electrical references for RV technicians, electricians, builders and advanced owners who are diagnosing real systems. Battery capacity, charge sources, converter behaviour, solar recovery, DC-to-DC charging, monitoring and storage are treated as one electrical system.

OPEN RV POWER CALCULATORVIEW REAL SYSTEM REFERENCE

Field tools and references

Start with the electrical problem in front of you, then follow the charging path instead of replacing components by guesswork. These references are built from hands-on RV electrical work by Heeler RV Electrical, a Journeyperson electrician serving Kelowna and the Okanagan.

Sizing toolRV Power Calculator

Build daily Wh from actual loads, then compare battery carry, parked days, solar contribution and vehicle charging.

Real system exampleJayco Talon Owner Reference

Battery bank, converter, solar, disconnect behaviour, monitoring and storage procedures documented as one system.

ChargingDC-to-DC Charging

Alternator source, input current, charger output, cable length, protection, voltage drop and useful Wh returned while driving.

Shore chargingConverter & Charger Reference

Charge profile, output sizing, battery chemistry, conductor path and the difference between a weak battery and a weak charger.

Battery systemsLithium Integration

Battery chemistry, converter compatibility, solar controller settings, charging paths, protection and monitoring.

SolarRV Solar Systems

Array size, roof constraints, controller limits, wiring, voltage drop and realistic daily charging contribution.

Battery sizingHow Many Amp-Hours?

Turn daily electrical use into a practical battery-bank target instead of choosing capacity by guesswork.

RuntimeRV Battery Runtime

Convert Ah to Wh, account for usable capacity and inverter losses, and estimate realistic runtime from actual loads.

Solar sizingHow Much Solar?

Size solar from daily energy use, charging conditions and the amount of battery energy that needs to be replaced.

DiagnosisBattery Not Charging

Trace shore, converter, solar and vehicle charging paths with measurements before replacing components.

Parasitic loadBattery Dies Overnight

Separate undersized storage from unexpected loads, poor charging and parasitic draw.

Starlink powerStarlink in an RV

Translate Starlink watts and hours of use into daily Wh, battery capacity and charging requirements.

Questions worth solving at the meter

These are the kinds of electrical questions this resource library is being built around.

Battery goes dead in storageMeasure actual parasitic current, identify constant B+ circuits, verify whether the factory disconnect truly isolates the bank, and calculate Ah lost over time.
Converter is on but the bank is not recoveringVerify battery voltage at rest and under charge, converter output voltage, current available at the bank, cable drop and battery condition before condemning equipment.
Solar wattage looks good but recovery is poorCompare array voltage/current, controller limits, battery-side output and realistic sun-hour production against the actual daily load.
DC-to-DC charger is not keeping upSeparate alternator capability from charger output. Check input current, cable length, voltage drop, engine-run control and the number of drive hours actually available.
Field-reference intent: These pages are practical planning and diagnostic references, not replacements for manufacturer service data, equipment instructions, applicable electrical requirements or measurements on the actual RV.