1. Battery Identification

  • Check the battery type: Lead-acid, Lithium-ion, etc.
  • Check the voltage rating (e.g., 12V, 24V, 48V).
  • Check the Ah capacity (e.g., 100Ah).
  • Check the positive (+) and negative (−) terminals.
  • Check the battery label, model number, and manufacturer details.

2. Battery Testing

  • Inspect the battery for damage, leakage, or swelling.
  • Use a multimeter to measure the battery voltage.
  • Check the terminal connections for corrosion or looseness.
  • For lead-acid batteries, check the electrolyte level/specific gravity if applicable.
  • Compare the measured voltage with the battery’s rated voltage.

3. Battery Connection

  • Switch OFF the system before making connections.
  • Identify positive (+) and negative (−) terminals correctly.
  • Connect the battery according to the required configuration:
    • Series connection: increases voltage.
    • Parallel connection: increases Ah capacity.
  • Use properly rated cables, fuses/breakers, and suitable PPE.
  • Tighten terminals properly and verify polarity before switching the system ON.

Example: Two 12V, 100Ah batteries in series = 24V, 100Ah.