Battery Installation Service Break-Even Point: $54K/Month

Fixed costs $8.7K/mo Core monthly base

Contribution margin 70.5% After variable costs

Break-even revenue $12.3K/mo Revenue target

Break-even timing Month 5 Launch ramp point

Break-even calculator

Test monthly revenue, variable expenses, and fixed costs to see when the service covers overhead.

Lean Base Full

Monthly revenue Revenue is the money available to cover direct costs and fixed overhead. $ Low sales High sales Variable expenses These are direct costs that rise with each job, like parts, fuel, and payment fees. $ Low costs High costs

Money available to cover fixed costs $206,296 $285,333 revenue - $79,037 variable expenses

Margin ratio

72%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead the business must cover before profit starts. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which battery installation expenses are fixed, variable, or capacity-driven at break-even?

Cost classification

Break-even is reliable only when stable monthly overhead, per-install costs, and capacity-driven payroll are split correctly. Here, the base fixed overhead is $8,650 per month before salaried staff.

Expense	Cost	Break-Even Treatment	Common Mistake
Warehouse and Office Rent	Fixed	Include $4,500 per month in fixed overhead from Month 1 through Month 60.	Spreading rent across jobs and hiding the true monthly revenue floor.
Fleet Insurance	Fixed	Include $1,200 per month as required vehicle overhead within the current fleet plan.	Treating vehicle overhead as purely per-job because routes change daily.
Booking and Dispatch Software	Fixed	Include $650 per month before calculating contribution margin.	Leaving software out because it feels small versus payroll and batteries.
Battery Inventory and Parts	Variable	Model as 18.0% of first-year revenue, falling to 16.0% by the fifth year.	Ignoring stocked batteries and counting only parts used on completed installs.
Disposal and Recycling Fees	Variable	Model as 2.5% of first-year revenue, falling to 1.7% by the fifth year.	Omitting required disposal fees when estimating install-level margin.
Fleet Fuel and Maintenance	Variable	Model as 6.0% of first-year revenue, falling to 5.2% by the fifth year.	Counting fuel but missing maintenance tied to higher route volume.
Payment Processing Fees	Variable	Model as 3.0% of revenue in the first three years, then 2.9% and 2.8%.	Using gross revenue as cash collected without card fees.
Lead Technician, Field Technician, and Dispatch Payroll	Semi-fixed	Add payroll in staffing steps as route capacity grows, including field technicians rising from 2.0 FTE to 10.0 FTE.	Treating technician payroll as purely per-job and understating idle capacity risk.

How does break-even change from a lean launch to base and full scale?

Scenario table

Break-even gets easier as mobile battery work falls from 75% to 55% and higher-ticket RV, marine, and home backup jobs rise. Lower battery, recycling, and fuel rates lift contribution margin from 70.5% to 74.3%, which widens the cushion.

Planning case only; actual break-even will move with job mix, battery costs, and technician utilization.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean break-even case	$45.1k	$13.3k	$31.8k	70.5%	$0	At break-even, so small cost spikes can flip profit negative.
Year 1 launch mix	$89.1k	$26.3k	$34.4k	70.5%	$28.4k	Above break-even, with room to absorb slow weeks.
Year 5 scaled mix	$620.3k	$159.4k	$85.5k	74.3%	$375.4k	Strong cushion as RV, marine, and backup work grow.

What breaks the break-even plan for a battery installation service?

Stress test

The model has room in Year 1, but the cushion shrinks fast if installs slow or costs rise. The biggest pressure points are payroll-heavy fixed overhead and the 29.5% Year 1 variable cost load.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$586k	$484k cushion	Year 1 sales stay well above break-even.
Revenue shortfall	Year 1 revenue falls 15%.	$586k	$324k cushion	A softer top line trims the cushion by about a third.
Fixed-cost increase	Rent, fleet, dispatch, insurance, and payroll rise 10%.	$644k	$425k cushion	Higher overhead raises the needed revenue even if demand holds.
Margin pressure	Battery parts, disposal, fuel, and payment fees rise 3 percentage points.	$612k	$457k cushion	Margin compression pushes break-even higher fast.
Combined pressure	Year 1 revenue falls 15%, fixed overhead rises 10%, and variable costs rise 3 points.	$673k	$237k cushion	A slower month plus cost creep can erase most of the cushion.

What should a battery installation founder verify before buying vehicles, warehouse space, and ad spend?

Founder checklist

Don’t commit to vehicles, space, or a full hire stack until the local job mix, the $34.4K monthly fixed load, and the $678K cash floor all clear at once. Here’s the quick test: demand, margin, staffing, and runway have to line up before breakeven.

1Demand Proof75/15/10 Mix

Verify the service area can support 75% mobile vehicle, 15% RV and marine, and 10% home backup work, with 1.2 billable hours per active customer, before you buy fleet capacity.

2Fixed Load$34.4K/mo

Check that rent, fleet insurance, software, utilities, liability, and core Year 1 wages total about $34.4K per month before variable costs, because that is the monthly floor you must cover.

3Margin Check70.5% CM

Lock supplier terms before stocking batteries, since Year 1 parts at 18.0%, recycling at 2.5%, fuel at 6.0%, and card fees at 3.0% leave about 70.5% contribution margin before overhead.

4Staff Ramp5 FTE

Confirm one manager, one lead technician, two field technicians, and one dispatch role can cover the first-year job mix, because service speed and route coverage drive the break-even month.

5Cash Runway$678K

Keep at least $678K in cash through Month 5, because that is the model’s minimum cash point before breakeven arrives.

6Ad Spend$45K / $45 CAC

Test the Year 1 marketing plan against a $45,000 budget and a $45 customer acquisition cost, so route density grows fast enough to support the fleet and hire plan.