Summary
If you charge only at home, you need at least your full round trip, plus enough spare for the worst ordinary day: cold weather, a headwind, a heavy bag, an errand on the way home. A 10-mile one-way commute is a 20-mile daily requirement, and a bike whose optimistic range claim is 22 miles leaves almost nothing in reserve. Compare batteries by watt-hours, then treat the advertised range as an upper bound.
Start with the round trip
| One-way commute | Distance per day, home charging only |
|---|---|
| 5 miles | 10 miles |
| 10 miles | 20 miles |
| 15 miles | 30 miles |
| 20 miles | 40 miles |
That daily figure is the floor. Detours, a stop at the store and the slow loss of capacity as a battery ages all come on top of it, and none of them are in the range number on a product page.
Watt-hours are the number to compare
Listings mix volts, amp-hours and watt-hours, which makes batteries hard to line up. Watt-hours (Wh) describe the total energy the battery holds. You get the figure by multiplying voltage by amp-hours; Lectric's own example is 48 volts × 14 amp-hours = 672 watt-hours.
Voltage alone says little about range. A 48V battery with 10Ah holds 480Wh; a 48V battery with 20Ah holds 960Wh. Same voltage, twice the energy.
Why the same battery goes different distances
Watt-hours do not convert into a fixed number of miles, because the motor draws different amounts of power from one minute to the next. Lectric lists pedal-assist level, throttle use, rider and cargo weight, hills, wind, tire pressure, temperature, riding speed, surface, starting and stopping, and mechanical condition as things that change real-world range.
Two riders on identical bikes can finish the same route with very different charge left. One rides in a low assist mode on a mild day; the other uses a higher mode into a winter headwind with groceries on the rack. Higher assist "typically consumes energy faster," in Lectric's words, and cold air and stop-and-go riding pull the number down further.
Charging at work
If you can charge at the office, a smaller battery covers a longer commute, since each leg only has to reach the next outlet. In exchange, charging stops being optional. On the day you forget the charger or the outlet is taken, the ride home runs on whatever is left from the morning.
When a larger or second battery makes sense
Extra capacity pays off when the gap between reliable charging points is long: long suburban commutes, errands stacked after work, steep routes, cargo riding, or riders who want to charge twice a week instead of every night. Dual-battery setups stretch that further, at the cost of more weight to carry and a higher price. On a short, flat commute with a charger at home, that extra capacity mostly adds pounds.
Sources
- Lectric eBikes: eBike Terms Explained, A Beginner's Dictionary (Aug. 4, 2026)
- Lectric eBikes: How to Choose the Right Pedal Assist Level for Every Ride
- Shimano: E-bike FAQ, traveling distance per charge (S-6860)
Data checked, sources, and what we did not test
Data checked: 2026-09-24. Figures and quotations were read on that date from the pages listed under Sources and can change without notice.
Sources: manufacturer, retailer and public-agency pages, listed above. No review sites, forums or retailer ratings were used.
What we did not test: ride quality, brake feel, real-world range, durability and customer service. We have not ridden these bikes and publish no ratings or rankings.