Flying · practical
Carrying a spare battery.
When a second pack earns its place in your bag, and how to carry it so no one questions it.
A spare battery roughly doubles your range and turns a charging problem into a non-event. It also adds weight to carry and a small ritual at security. Whether it’s worth it depends entirely on how you travel.
Worth it, or not
Carry a spare if
- You’re out for a full day between charges
- Your destination’s charging access is uncertain
- You’re covering more than the chair’s rated range in a day
- Being stranded with a flat battery would be a serious problem, not an inconvenience
- You’re travelling somewhere hilly or cold, both of which cut range
Probably skip it if
- You charge overnight and your daily distances are short
- You’re mostly indoors or close to home
- The extra weight to carry is itself a problem
- Your trips are comfortably inside a single charge
Carrying one on a plane
Four rules. Follow them and a spare is a non-issue; break one and it can be confiscated.
- In the cabin, never the holdA spare lithium battery is carry-on only, with every airline, without exception.
- Protect the terminalsUse the battery pouch, or tape over the contacts. This stops anything metal in your bag from bridging them.
- Stay within the allowanceOne spare up to 300 Wh, or two up to 160 Wh each. Every Seraphin spare is inside this.
- Have the rating visibleThe watt-hour figure marked on the pack lets security confirm it in seconds instead of holding you up.
The pouch
We sell a terminal-protecting pouch sized for the Seraphin packs. It’s the simplest way to meet the terminal rule, and it stops a loose spare rattling around your bag. Add one with your chair or any spare battery.
Airline policies change and vary by carrier, route, aircraft and destination. This is a starting point, not a substitute for confirming with your airline before you travel. Seraphin supplies your battery documentation; only the airline can approve your battery. Last reviewed July 2026.