new to this forum because of a recent purchase

just bought an E-Mag today

took it apart everything looks amazing. i have the battery on the charger now, hoping for the best.

my question is im not sure of the life that the battery that i have will be, and wondering if there are still people out there that make the battery for these things and if so how much? i either want an extra one for backup or get one that can last like a new one would have.

i like the idea of the mag being able to go from electric to mechanical so i may keep this and use it for rec play.