Access is more useful than a headline power.
Write down a dependable place to charge, when it is available and whether you control access to it. An apartment, workplace or depot can have shared rights and operating limits. Confirm the relevant permissions and installation requirements locally.
Sources: US01. Accessed 8 November 2026.
Distinguish the energy boundaries.
Battery-side consumption describes energy used from the battery. Metered charging energy also includes losses. The tools use an explicit efficiency assumption where needed. If a published figure already includes charging losses, applying another loss allowance would double count them.
Sources: US02. Accessed 8 November 2026.
Use an effective charging power.
The Charging Window tool uses a constant effective AC power for an initial balance. Set it to a value supported by the vehicle and actual supply, not simply the label on a charging unit. DC charging curves, tapering, preconditioning, shared power and queues are outside that arithmetic.