How Far Can an Electric Mountain Bike Go on One Charge? Real e-MTB Range

How far an electric mountain bike goes on one charge comes down to the battery, the mode you ride in, the ground, the weather and you. So nobody can honestly give you one number. What I can give you is what the makers publish, and what a full battery actually gets me.

I ride a Mondraker Zendit with DJI Avinox, and I've done nearly 1,000 miles on it, around the Forest of Dean and at BikePark Wales. Before that I rode a Specialized Kenevo SL for five years. I've been riding e-MTBs in the Forest since 2018. On the Zendit, my verdict on range is simple:

"Range is incredible. The Tour de FoD is so easy on one charge."

How far can an e-MTB go on one charge?

Bosch is refreshingly straight about it. Its battery FAQ puts range on its smart system anywhere from under 50 km (about 31 miles) to about 170 km (about 106 miles) per charge, and lists what moves it: the support level, how you ride, air resistance, the rider's weight, tyre pressure and the terrain. Mountain biking puts most of those on the thirsty side. Steep climbs, soft ground and a high mode are how you end up at the short end.

Real days are more use than a spec sheet, so here are two of mine.

The Tour de FoD. It's the day out I give a mate visiting the Forest for the first time. It's about 30 miles from Pillowell, through Mallards Pike, a coffee and some downhill runs at the Cycle Centre, over to Fetter Hill and down into Parkend, with plenty of natural riding in between. The full route is in my Forest of Dean guide.

A day at BikePark Wales. I self-shuttle: I ride back up to the top rather than taking the uplift.

"At BikePark Wales you can do about 10 runs before you need charging. Then just stick it on charge with a fast charger, have lunch for an hour, and you're back up and do another five runs easy. Way more runs than the uplift, way more fun."

E-MTB battery sizes compared

The battery is your fuel tank, and Bosch says it has "a critical influence on the range". Capacity is measured in watt-hours (Wh). Here's what the main systems carry, from the makers and from ebike-mtb.com's tests:

System	Battery	Notes
DJI Avinox	600 or 800 Wh; 700 Wh added with the M2S	The first bikes came with 800 Wh or a smaller 600 Wh; the 700 Wh uses 4680 cells
Bosch PowerTube	PowerTube 800: about 800 Wh	About 3.9 kg, built into the frame
Specialized Turbo Levo 4	840 Wh	Plus an optional 280 Wh range extender
Bosch Performance Line SX (Bosch's lightest motor)	CompactTube 400: 400 Wh	Battery around 2 kg
Fazua (lightweight)	Ride 60: 430 Wh; Energy 480: 480 Wh; Ride 50: 252 Wh	The Energy 480 weighs 2.4 kg

The full-power batteries here run from 600 to 840 Wh, and the lightweight ones from 252 to 480 Wh. That's a big part of how lightweight bikes save weight: Bosch's CompactTube 400 weighs around 2 kg against about 3.9 kg for the PowerTube 800, and Fazua quotes a total weight of 4.3 kg for its Ride 60 system, which runs a 430 Wh battery. I've written about that trade-off, and why I went from five years on an SL to 150 Nm, in full power vs lightweight.

On Avinox, the battery changes more than the range. DJI's FAQ gives the M2S a peak of 1,500 W with the FP700 or RS800 battery and 1,300 W with the FS600 or FS800, and ebike-mtb.com's M2S test says it only sustains 1,500 W and 150 Nm continuously with the FP700. Check which battery a bike comes with before you buy.

What drains an e-MTB battery?

Bosch's list covers the lot, but on a mountain bike a few things matter most.

• The mode. More help means more drain. DJI's drive unit page gives Boost on the M2S up to 60 seconds of 150 Nm, and ebike-mtb.com says you can set it anywhere from 10 to 60 seconds. BikeRadar says the M2S draws power at a higher rate, so riding it hard in Turbo or Boost drains the battery faster, and ebike-mtb.com lists high energy use at full power over long spells among its lows. Full power is brilliant. It costs battery.
• Climbing. Terrain is on Bosch's list, and a day of steep climbs is a very different day for the battery from a spin along the fire roads.
• Tyre pressure and weight. Both are on Bosch's list too. Pressures take a minute to check before you go.
• Cold. Bosch says cold weather reduces battery performance. Below 0 °C it recommends bringing the battery into a heated room and letting it reach room temperature before you ride. DJI gives Avinox a normal operating range of -10 to 40 °C. In winter, the battery lives in the house, not the shed.
• Age. DJI says an Avinox battery keeps up to 80% of its capacity after 500 cycles, measured in the lab at 25 °C, so your range will slowly shrink over the years. The free Plus1 Garage puts a battery health check on your list every 12 months, and calls a battery tired at 80% health and worn out at 70%.

If you ride Bosch, its range calculator lets you pick a mode, from ECO+ through eMTB to TURBO, add your effort and your details, and work out your range before you set off.

How long does an e-MTB battery take to charge?

It depends on the charger as much as the battery. DJI's FAQ gives these times from empty to 80% on Avinox batteries (the FS600 and FS800 figures are for its 508 W, round-port charger):

Battery	0 to 80%
FS600	1 h 42 min
FS800	1 h 45 min
FP700	1 h 16 min

On that charger, DJI puts a full charge of the FS600 or FS800 at about 2 hours 23 to 2 hours 28 minutes. But ebike-mtb.com's test of the Avinox system had the standard charger filling an 800 Wh battery in around 6 hours, and the High Performance Charger in around 3. Bosch's 4A charger takes about 2.6 hours to get a PowerTube 800 to 50% and about 6.9 hours to full.

So an hour's lunch on a fast charger is a real top-up: on DJI's figures it's more than half the time an FS800 takes to reach 80%. On a slower charger, the same hour puts back a lot less. Find out which charger came with your bike before you plan a lunchtime top-up.

Two more things. Bosch and DJI both say to charge between 0 °C and 40 °C, and Bosch says ideally at room temperature. And on Avinox you can set a charge limit of 100, 95, 80 or 70% in the Avinox Ride app: if you keep it capped between rides, put it back to 100% the night before a big day. My battery care guide and Avinox settings guide go deeper.

Can you charge an e-bike at the Forest of Dean Cycle Centre?

Don't count on it. Forestry England's Cycle Centre page tells you what to bring, down to a fully charged phone, and warns there's no first aid on site, but it says nothing about charging e-bikes. Pedalabikeaway, who do the bike hire there, list a workshop, shop, toilets, showers and a bike wash, and hire e-bikes, but their home page doesn't mention charging either (both checked September 2026).

So if you're copying my charge-at-lunch days, plan where the charging will happen before you leave. Arrive full. If you're local, home is the easy answer. If you've come a distance, bring your charger and ask around rather than assume, and keep enough in the battery to get back to the car.

Can you use a range extender on an e-MTB?

Some makers sell a second, smaller battery you carry for the long days. Bosch's battery page describes the PowerMore 250 as an extra battery the size of a drinks bottle, and Specialized offers an optional 280 Wh range extender for the Turbo Levo 4 alongside its 840 Wh battery.

Stick to what your bike's maker supports. DJI says third-party range extenders aren't compatible with Avinox: one can make the system malfunction, voids the warranty and could be a fire hazard. DJI also says any modification to the drive system voids the warranty and may break the law.

More runs means more wear

Here's the catch with a battery that keeps going. More laps and more climbs put more torque through the drivetrain, and on a full-power bike it adds up fast.

"Avinox absolutely kills cassettes. I've been through a chain in 200 miles and a cassette in 700 miles. Bear that in mind, but it's a small price to pay for the smile on your face."

That's my own wear, and yours will depend on your lube, your ground and how you ride. The Plus1 Garage starts an e-bike chain at 540 miles against 900 for a normal bike, drops it to about 300 if you ride mostly in the wet on drip lube, and starts an e-bike cassette at 1,620 miles. Those are best guesses you can correct, and a chain checker has the final word: my chain wear guide shows how.

And 15 runs a day is more fun with someone to race back to the top. Plus1 is a free app for posting a ride and finding riders near you. It's new, and it only works when riders are on it, so bring your mates.