GratisAIaccessibility · field guide · local-first · no account
range day ladder

Check Wheelchair Range Against Planned Distances — Free

Manual and powered chairs are honest about distance in a way day plans are not. Subtract each day’s planned distance from the usable range your reserve leaves, and see which day the battery spends before you do.

The proof surface

Charging-cost ledgers price what powering a mobility device costs. This works on the range ledger instead — how much usable distance each charge holds against the day you actually planned, with the reserve treated as spent.

Inputday | planned distance | range per charge; reserve percent kept back
Rare deviceCharging-cost ledgers price what powering a mobility device costs. This works on the range ledger instead — how much usable distance each charge holds against the day you actually planned, with the reserve treated as spent.
Output artifactmargin units per row with transparent workings
Cost$0 · local-first · one free run · samples labelled
Sample, not your facts: Illustrative sample: Clinic trip | 8 | 20; School run | 12 | 20. With reserve percent kept back set to 20, tightest day margin is 4.00 margin units.

Why the flat version breaks

Using the brochure range for every day

Terrain, temperature and battery age move real range well below the printed one.

Planning the outbound leg only

The return trip spends the same battery the way out did.

Spending the reserve to finish the plan

The reserve exists for the unplanned kilometer; a day that needs it needs a recharge or a lift instead.

How to work the range day ladder

Plan each day as one row

Trips chained across the day add up: clinic, school run, market, library — the day’s total planned distance, not the longest single leg.

Use the range the day really gets

The manual’s figure is flat-ground and new-battery; cold weather, hills, kerbs and an older battery shorten it. Twenty distance units of real range is a measured figure.

Set the reserve you keep back

The margin held for the detour, the closed lift, the extra stop. Twenty percent is prudent; zero percent is how days end in a taxi.

Charge or lift the tightest day

The ladder reports each day’s margin and holds the tightest. A clinic trip leaving eight of sixteen usable units and a school run of twelve leaves four; adding the market day’s eighteen against twenty-two of range spends the reserve before the library stop is reached.

What the range day ladder replaces

QuestionBeforeVisible working
Using the brochure range for every dayTerrain, temperature and battery age move real range well below the printed one.Use the range the day really gets
Planning the outbound leg onlyThe return trip spends the same battery the way out did.Set the reserve you keep back
Spending the reserve to finish the planThe reserve exists for the unplanned kilometer; a day that needs it needs a recharge or a lift instead.Charge or lift the tightest day

A local arithmetic aid replaces hand calculation, not expert review. No paid AI service is needed.

Run it on the samples, right here

FIRST-LOAD

Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.

Range arithmetic on the distances and reserves you supply. Not mobility, medical or equipment advice; range, load limits and charging practice come from the device manufacturer and your therapist or mobility provider, and unexpected weakness or pain needs clinical review.

Data note: Everything runs in this browser tab on the range day ladder: your day | planned distance | range per charge stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.

Go deeper: the companion app files the same reading as a climbing rung ladder

The article demo above runs without limits. The companion app keeps a local history, exports the rows as CSV, prints the range day ladder reading, and holds your drafts on this device — one free run, then $ 4 one-time for the layer that keeps filing.

The range day ladder reading is complete for free. The optional $4 layer adds print, row CSV and the last five local reading summaries; it does not add hidden answers. Checkout is not configured yet; the article demo remains unlimited.

Open the check wheelchair range against planned distances companion

Boundary

Range arithmetic on the distances and reserves you supply. Not mobility, medical or equipment advice; range, load limits and charging practice come from the device manufacturer and your therapist or mobility provider, and unexpected weakness or pain needs clinical review.

What this is built on

Before: Terrain, temperature and battery age move real range well below the printed one. After: the range day ladder shows the working beside each named row so the reader can change the assumption and inspect the consequence.

Optional AI formatting, not calculation

For this range day ladder, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.

Format my non-sensitive notes for a range day ladder. Return plain rows only: day | planned distance | range per charge. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.

Accepted schema: day | planned distance | range per charge. No AI response is executed as code.