What battery tests are made during the...

🔍 Key Concepts

• Battery capacity vs. condition – what does an annual inspection really need to prove about an emergency battery bank? • Difference between measuring specific gravity and measuring voltage/current under load. • When is a test considered a performance (load) test versus just a routine check while charging or discharging?

💭 Think About

• Think about which option actually shows how the batteries perform when they are needed most – is that while they are charging, or when they are supplying power? • Which test would reveal weak cells or insufficient capacity under real operating conditions, not just give you a snapshot of chemical condition? • Look for the answer that describes both load and measured electrical quantities during a standardized test period.

✅ Before You Answer

• Identify which choices involve a controlled load on the batteries, not just observing them during normal charge/discharge. • Check which options include measuring terminal voltage (and possibly current) at a defined time or load level. • Ask: Does the test described demonstrate that the battery can support its required load for a specified period, as required for emergency power/lighting regulations?

What battery tests are made during the annual inspection?

Record the specific gravity of all cells while the batteries are charging.

The terminal voltage is measured and recorded at the end of a 6 hour full load discharge.

Record the specific gravity of all cells while the batteries are discharging.

With battery off charge and maximum required load measure and record maximum discharge current and voltage.

🔍 Key Concepts

💭 Think About

✅ Before You Answer