LG CELLS ARE, IF NOT THE BEST, ONE OF THE TOP THREE IN THE MARKET.

You just wouldn't be able to find these spec batteries on the e-bikes as they to expensive for manufacturers to use on their product. 

Also will give to much power to the bike and that itself is ..........

48V17.5Ah Electric Bike Battery Pack with Charger fit 48V 500W/ 48V 750W/ 48V 1000W bafang mide motor 
The battery pack fit 250W / 350W / 500W motor and 48 V 750W 48v 1000W bafang mide motor, 
1. Rated capacity: 14.5AH 
2. Voltage: 48V 
3. Charging Voltage: 54.6V 
4. Discharge cutoff voltage: 36.4V 
5.5P13S Li-ion LG 3500 18650  battery cells

 (LG  brand battery cells) 

6. Continuous discharge current: 30A 
7. Pulse/Max discharge current 50A 
8. Max charging current : 5A 
9. Charging temperature: 0~45°C 
10. Dischargeing temperature: -20~55 °C
11.Operating voltage:36.4V~54.6V 
12.Diamesion: 90*111*367mm 
13.Weight of battery pack About kg 5 
Note: Please turn on the power switch when you charging this battery pack.