During a professional IT hardware audit, the battery is often the most critical component to verify. However, interpreting the data from ACPI telemetry requires understanding two key metrics reported by SpecInfo.
1. Designed Capacity: The energy capacity the battery had when it left the factory (measured in mWh).
2. Full Charge Capacity: The actual energy the battery can hold today after chemical aging.
How is "Wear Level" Calculated?
The wear level is not just a random percentage. It is a direct ratio. If your Designed Capacity is 50,000 mWh and your Full Charge Capacity is 40,000 mWh, your battery has 20% Wear (retaining 80% of its health).
Most corporate lease agreements and "refresh" cycles in the UK consider a battery for replacement when it falls below 75% Health (25% Wear).
Why SpecInfo uses Web APIs?
Traditional tools require admin-level installation or powercfg /batteryreport commands. SpecInfo accesses this telemetry directly through secure browser APIs, ensuring a "zero-footprint" audit that leaves no trace on the client's system — critical for security-conscious environments.