The ultimate in capacity. Unprecedented range in a lockable/removable case. 
*I cannot ship batteries to Alaksa or Hawaii**
With Larger batteries like these, I recommend using a battery cradle support like these:
https://www.johnnynerdout.com/product-page/bottle-bob-by-grin-tech
https://www.johnnynerdout.com/product-page/double-bob-battery-adapter
https://www.johnnynerdout.com/product-page/triple-bob-battery-adapter-mount
Model: 48V 24.5AH battery pack
Casing: Polly-DP-9(without controller box)
Cell type: Panasonic GA-3500MAH
Configuration:13S7P
BMS: 50A continuous discharge
Charge port: 3 pin high current
Discharge:30cm long length with Anderson
Battery base contact: 5 pin