Best value spare battery for my modded setup?

Axemation

1 µW
Joined
Mar 21, 2015
Messages
3
Hey Guys, I recently modded my Evolve board to a backpack tethered design and I want to ride further than around 10 miles a charge.
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The battery it comes with is 36v 10Ah lithium polymer with a 10 cell setup, whats the easiest and cheapest way for me to add another pack to my backpack that I can either add on or switch between and will I be able to use my current charger or will I need to get another?
Cheers for your suggestions, Axel.

P.S Ask me anything you would like about the backpack board!
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