Range Extender · AIR + AIR S

Maxon Range Extender — AIR and AIR S — Install & Use

Doubling your range. The range extender adds 250 Wh in a bottle-cage-mounted pack that hot-swaps in the field. This manual covers both versions: AIR and AIR S.

Which range extender do I have?

	AIR	AIR S
Bikes	Maxon BikeDrive AIR bikes (e.g. E-Menace)	Paratu CP SL (400 + 250 = 650 Wh) and Paratu CP LR (600 + 250 = 850 Wh)
Cable	AIR cable	Special 45–90° cable — included with the AIR S range extender
Cable lock	Bayonet — turn until it clicks	Click-fix — push in until it clicks (no turning)
Shop	AIR range extender	AIR S range extender incl. 45–90° cable

Everything else (mounting, button, LEDs, charge display, tips) is the same for both.

How it works

• Acts like a portable power bank — automatically charges your main battery while you ride.
• More range: Paratu CP SL 400 + 250 = 650 Wh · Paratu CP LR 600 + 250 = 850 Wh.
• Hot-swappable mid-ride — carry a second extender for very long rides and swap without tools.
• Mounts on a standard bottle-cage location with the Maxon-compatible bracket.

Connect for the first time

1. Mount the Range Extender on the bottle-cage bracket. The retention rubber band must be in place — a loose extender can fall during a ride and the cable can get caught in the wheel.
2. Open the charging port covers on both the bike and the extender.
3. Connect the cable at both ends. AIR: turn each bayonet lock until it “clicks”. AIR S: use the 45–90° cable and push each click-fix connector in until it “clicks” — no turning.
4. Press the Range Extender button. Green LED on the extender = on. Green LED at the top of POWERTAB = system has detected it.
5. Both green LEDs steady = charging your main battery. You’re ready to ride.

Safety: never ride with a loose cable. Verify both cable locks are engaged (bayonet on AIR, click-fix on AIR S) AND the rubber band is secured before every ride.

LED reference (Range Extender)

LED	Meaning	Action
Green steady	Connected, charging main battery	Normal.
Green flashing	Range Extender on, but not detected by bike	Check both cable locks (bayonet on AIR, click-fix on AIR S).
Red	Range Extender error	Power-cycle: hold button 5 sec, wait 10 sec, press to turn back on. If persists → dealer.
Amber	Charging by external charger (extender being topped up)	Normal.
No LED	Off or empty	Press button — should see 5 white SOC bars. If empty, charge.

SOC display (5 bars)

Press the button on the Range Extender briefly to see its current charge — 5 white LEDs in 20% increments. Press again to wake the system; auto-sleeps after a few seconds.

Tips for getting the most out of it

• Connect at the START of the ride. The extender will keep your main battery topped up the whole way — much better than waiting until main is half-empty.
• Carry a spare for ultra-distance rides. Hot-swap in seconds during a break.
• Check both SOCs — POWERTAB shows main battery (7 bars), Range Extender button shows extender (5 bars).
• Charging stops automatically when the main battery hits 100%. That’s normal, not a fault.

Cable cross-compatibility — important

The battery pack is the same 250 Wh, but the cables are different: AIR uses the AIR cable with a bayonet lock, AIR S needs the special 45–90° cable with the click-fix lock. An AIR range extender with its cable does NOT connect to an AIR S bike (Paratu CP SL / LR). Order the AIR S range extender for the Paratu CP — the 45–90° cable is included.