Watt-Hours to Amp-Hours Calculator
Convert watt-hours to amp-hours for battery capacity calculations. Essential for solar power systems, RV/marine batteries, backup power, and electrical design projects.
Step 1: Battery Specifications
80%
Understanding Watt-Hours and Amp-Hours
Watt-hours (Wh) measure energy capacity, while amp-hours (Ah) measure charge capacity. The conversion depends on battery voltage: Ah = Wh ÷ V.
Step 2: Battery Type & Usage
85%
About Battery Capacity
Actual usable capacity depends on battery type, efficiency, and depth of discharge. Lithium batteries typically allow deeper discharge (80-100%) than lead-acid (50%).
Battery Capacity Results
Summary
Battery Comparison
Breakdown
Battery Capacity in Amp-Hours
20.83 Ah
For 1000 Wh at 48V with 80% DoD
Run Time at Load
5.0 hours
Usable Capacity
800 Wh
Battery Voltage
48V
Battery Type
AGM
Battery Type Comparison
| Battery Type | Typical DoD | Efficiency | Cycle Life |
|---|
Capacity Calculation Breakdown
Conversion Formula
Amp-Hours (Ah) = Watt-Hours (Wh) ÷ Voltage (V)
Usable Ah = (Wh ÷ V) × (DoD ÷ 100) × (Efficiency ÷ 100). Run time = (Usable Wh) ÷ Load Power (W).
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