Electrical
What draws power, how long each battery lasts, and whether solar and the alternator keep up.
The steps
- 1
Your truck
What’s on the truck today?
Pick or confirm the truck and the plan to work in. What’s on it now is the baseline the plan is measured from.
- 2
What draws power
What draws power, and from which battery?
Fridge, lights, radios and the rest, each on the battery it draws from.
Answered byElectrical
- 3
Batteries and charging
Does charging keep up?
How long each battery lasts with no charging, and whether solar and the alternator put it back.
Answered byElectrical
- 4
Review
Review and keep
What changed against Actual, cost and weight where known, and the open checks.
Each step opens its calculator with your truck filled in: Electrical. With JavaScript on, this page keeps your place, your answers and this system’s parts from your build sheet in My garage.
Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.