What is 100Ah of lithium equivalent to?
A 100Ah lithium battery’s energy equivalent depends on its voltage. For a 12V system, 100Ah equals 1.2kWh (1.2度电) via the formula: Energy (Wh) = Voltage (V) × Capacity (Ah). This assumes ideal conditions—real-world usable energy is ~80-90% due to efficiency losses. Higher voltages (e.g., 24V) scale proportionally.
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How is 100Ah converted to kilowatt-hours?
Multiply voltage × capacity. Example: 12V × 100Ah = 1,200Wh (1.2kWh). Pro Tip: Always check the battery’s nominal voltage—24V doubles energy to 2.4kWh.
Battery energy hinges on voltage. A 100Ah 12V lithium pack stores 1.2kWh, while a 48V system holds 4.8kWh. Why does voltage matter? Higher voltages reduce current for the same power, minimizing heat and wiring costs. For instance, a 12V 100Ah battery running a 600W inverter lasts ~1 hour (600W ÷ 12V = 50A draw; 100Ah ÷ 50A = 2 hours). But wait—lithium batteries typically discharge to 80% depth for longevity, trimming usable energy to ~0.96kWh.
What appliances can a 12V 100Ah battery power?
A 12V 100Ah battery (1.2kWh) runs: 10W LED lights for 120hrs, 50W fridge for 24hrs, or 300W TV for 4hrs. Always derate by 20% for safety.
Practically speaking, energy consumption varies with device efficiency. Let’s break it down: A 12V 100Ah battery holds 1.2kWh. A 60W laptop charger (12V/5A) would run for 20 hours (100Ah ÷ 5A). But what if you’re powering an inverter? A 1,000W microwave on a 12V system pulls ~83A (1,000W ÷ 12V), draining the battery in ~1 hour (100Ah ÷ 83A). Pro Tip: Use low-voltage DC appliances to bypass inverter losses, preserving 10-15% energy.
| Appliance | Power (W) | Runtime |
|---|---|---|
| LED Lights | 10 | 120h |
| RV Fridge | 50 | 24h |
| CPAP Machine | 30 | 40h |
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FAQs
Yes—it powers lights (10W), phone charging (5W), and a 12V fridge (50W) for 12+ hours. Derate capacity by 20% for lithium longevity.
How many solar panels charge a 100Ah battery?
A 200W panel replenishes 1.2kWh in ~6 sun hours (200W × 6h = 1.2kWh). Use MPPT controllers for 97% efficiency vs. PWM’s 70%.