BYI Deep Cycle Lithium Batteries:  Made in the USA   52 volt 15 ah and 52 volt 11 ah --- normal lithium batteries (i.e. Lifepo4 etc.)  can only use 60--70% of the stored charge (shallow cycle)   BYI  can use 92--95% of stored charge (DEEP cycle) so you can go much farther on a charge.  BYI also charges 50% faster and can be run down all the way every time without damage to battery.  All BYI e bike Lithium batteries have a 3 year full warranty and come with high speed smart chargers that auto balance the cells in your battery. 

845 N. East st.
Fenton, MI 48430
United States

ph: 323-901-9941

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845 N. East st.
Fenton, MI 48430
United States

ph: 323-901-9941