Battery Health & Warranty

Specialized guarantees that the battery holds at least 75% capacity after 300 charge cycles, or alternatively, after two years from date of purchase. It is not uncommon for battery health to drop a few percent within 20 cycles, but to hold that for a year or more. See your Turbo manual for more battery details.

Notes & Tips

  • Familiarize yourself with the battery chapter in the manual and the symbols on the battery itself
  • Be aware that batteries age over time and through usage, resulting in reduced range
  • Always power off the bike before charging, connecting, or disconnecting the battery 
  • Batteries have undercharge and overcharge protection, so that they can be charged/discharged as needed
  • Avoid exposing your batteries to extreme temperatures (e.g., do not let them/the bike sit in direct sunlight for long periods of time or inside a vehicle that heats up)
  • In the cold season, keep your Turbo batteries at room temperature before riding in cold conditions - if the battery is not removable, keep your bike inside until you ride
  • When not using batteries for a long period, leave them at a charge level of about 60%. Store them/the bike in a dry place at moderate temperatures. Recharge to 60% every three months

What's a "charge cycle?"

The Battery Management System counts the number of full charge cycles. If your battery capacity is 320Wh, then one charge cycle is when 320 Wh have been charged into the battery. If only 160 Wh are charged into a 320 Wh battery, 1/2 charge cycle is counted. Battery aging over an estimated lifetime is taken into account for counting the cycles.

You can view your current charge cycles and battery health in the Mission Control app under Settings/Battery.

Battery Overview

Internal battery for all Turbo SL bikes

Labeled as: SL1-320

Part #: S196800015

Capacity & Charge times (full charge w/ std. 4A charger): 320 wh: 2:35 h

Nominal Voltage: 48V

Protection Rating: IP 67

Weight w/o hardware: 1.8 kg


Range Extender battery for all Turbo SL bikes

Part #: 98920-5640

Capacity & Charge times (full charge w/ std. 4A charger): 160 wh: 3:20 h (same charging time if charged in parallel with internal battery or alone)

Nominal Voltage: 48V

Protection Rating: IPX 6

Weight w/o cable: 1.0 kg

Fits into Zee cage included with SL bikes; connects via range extender cable.

Range extender cables:

220 mm road cable for mounting on seat tube (98920-5655)

165 mm mountain cable for mounting on downtube (98920-5650)