Per charge, per day, and per year. What the km numbers on an exoskeleton really mean on a real climb.
An exoskeleton battery lasts a quoted 14 to 30 km per charge depending on the model, recharges in 2 to 2.5 hours, and holds useful capacity for several years of regular hiking. But the km number on the box is not the whole story. Here is how to read it.
Per charge: what the km number means
Range is quoted for steady assisted walking. On a steep climb with high assistance you will draw more and see less; on rolling terrain you will see more. As a rule of thumb, plan for about 70 percent of the quoted figure on a hilly day. The Hypershell X Ultra leads at 30 km; the X Pro does 17.5 km; the π Plus does 14.4 km.
Per day: range extenders
On most models the battery is removable, so a spare doubles your day. A swap takes seconds. For multi-day trips you recharge at the hut overnight in 2 to 2.5 hours. If you routinely do big days, buy the long-range model or a second battery rather than rationing assistance.
Per year: lifespan
These use lithium-ion cells, like a phone or an e-bike. Expect them to hold strong capacity for several hundred full charge cycles, which is several seasons of regular use, before capacity slowly tapers. Store them part-charged in a cool place over winter, avoid leaving them flat for months, and the pack will outlast the trend cycle.
Charge time and IP rating
All our current models charge in 2 to 2.5 hours and carry an IP54 water rating, meaning they handle rain and dust but not submersion. Do not charge a soaking battery; let it dry first.
Frequently asked questions
How long does an exoskeleton battery last on one charge?
Between 14 and 30 km depending on the model, measured for steady assisted walking. On steep, high-assist climbs plan for about 70 percent of the quoted figure. The Hypershell X Ultra leads at 30 km.
How long does an exoskeleton take to charge?
Current Elegs models charge fully in 2 to 2.5 hours, fast enough to top up over a hut lunch or recharge overnight on a multi-day trip.
How many years does an exoskeleton battery last?
The lithium-ion packs hold strong capacity for several hundred charge cycles, which is several seasons of regular hiking, before capacity slowly tapers. Store them part-charged and cool over winter to extend life.