Battery Recycling & Materials Recovery worked example

Battery Pack Disassembly Labor at 14% safety and handling allowance: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop safety and handling allowance to 14%, then walk the calculation through step by step. Estimate labor hours required to dismantle battery packs from pack count, demonstrated packs-per-hour rate, and safety or handling allowance.

The inputs for this scenario

  • Battery packs to dismantle: 48 packs (held at the documented default)
  • Verified disassembly rate: 1.6 packs / hr (held at the documented default)
  • Safety and handling allowance: 14 % (the input this scenario stresses; the baseline uses 20)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base dismantling time = battery packs to dismantle รท verified disassembly rate.
  • Required pack disassembly labor works out to 34.2 hr at these inputs, and this is the headline figure for the scenario.
  • Base dismantling time works out to 30 hr at these inputs.
  • Safety and handling allowance works out to 14 % at these inputs.
  • Verified disassembly rate works out to 1.6 packs / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where safety and handling allowance sits at 20% and the headline result is 36 hr, this scenario comes in 5% below the baseline at 34.2 hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to safety and handling allowance, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. The verified disassembly rate assumes a consistent pack chemistry and design; mixed intake of OEMs, glued modules, or fire-damaged packs will blow past the allowance and the result understates true labor.

Results at a glance

  • Required pack disassembly labor: 34.2 hr (headline result)
  • Base dismantling time: 30 hr
  • Safety and handling allowance: 14 %
  • Verified disassembly rate: 1.6 packs / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Battery Pack Disassembly Labor calculator, set safety and handling allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.