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Surly Big Easy (2019) battery

The Surly Big Easy runs on a 36V 13.4Ah (482 Wh) battery rated for up to 160 miles.

36 Vnominal voltage
482 Whbattery capacity
160 mimax range
8replacement packs listed

Battery specifications

Nominal voltage
36 V
Capacity
13.4 Ah
Energy
482 Wh
Battery brand / cells
Bosch PowerPack 500
Chemistry and layout
Lithium-ion
Battery weight
5.7 lb
Charge time
3.5 hours
Estimated range
30–160 miles
Motor
Bosch Performance Line CX, Mid-Mounted Geared Motor, 250W nominal, 600W peak
Torque
75 Nm
Class
Pedal Assist (Class 1)
Launch price
$5,000

Efficiency at max range: about 3.0 Wh per mile.

Packs with matching voltage and capacity

Packs at 36V with at least 434 Wh
PackSellerTypeVoltageCapacityPrice
Rear Rack EBike Battery R006 36V 13Ah 17.5Ah BMS20A Lithium Battery Pack For 250 CheapestUnit Pack PowerAftermarket36 V468 Wh$206
Hailong Ebike Battery S039 36V 48V 14Ah BMS30A 18650 LG3500mAh Cells Electric BiUnit Pack PowerAftermarket36 V504 Wh$212
Hailong EBike Battery S039-3 36V 48V 13Ah 15Ah BMS25-30A Lithium Battery For 350Unit Pack PowerAftermarket36 V468 Wh$225
6PIN EBike Battery S220 36V 48V 15Ah 20AH BMS30A LG 5000mah Cells Lithium BatterUnit Pack PowerAftermarket36 V540 Wh$227
EBike Battery D034 36V 48V 60V 72V 20Ah 25Ah 40Ah PVC Lithium Battery Pack For 3Unit Pack PowerAftermarket36 V720 Wh$235
Polly DP-5 Jumbo Shark R049-8 36V 52V 20Ah 21700 Cells Electric Bike Battery PacUnit Pack PowerAftermarket36 V720 Wh$242
R049-2 36V 52V 24.5Ah BMS30A Samsung 3500mAh Cells Li-ion EBike Battery For 250W Best $/WhUnit Pack PowerAftermarket36 V882 Wh$249
Hailong EBike Battery S039-5 36V 48V 20AH BMS50A 21700 LG5000 Cells 4 PIN LithiuUnit Pack PowerAftermarket36 V720 Wh$250

Frequently asked questions

What battery does the Surly Big Easy use?

The Surly Big Easy (2019) uses a 36V 13.4Ah, 482 Wh battery from Bosch PowerPack 500 (Lithium-ion).

How far can the Surly Big Easy go on one charge?

Estimated range is 30 to 160 miles depending on assist level, rider weight, terrain and temperature.

Can I use a bigger battery on the Surly Big Easy?

A higher amp-hour pack at the same 36V voltage adds range, as long as it fits the mount and connector. Do not use a higher-voltage pack unless the controller is rated for it.