A larger capacity battery will last longer.
We do not offer them for sale on our website, but you can purchase compatible batteries at a local hobby store, or online.
They are physically larger and won’t fit perfectly into the battery compartment but they will work with the machine.
Feel free to purchase any compatible battery/brand anywhere they are sold - just be sure you get an 11.1V 3s battery with an xt60 connector like the one pictured:
Your compatible battery should have both of these connectors:
The number followed by the letter "c" indicates the discharge rate - (your battery might be a 25c or a 30c) just be sure you select a battery with a discharge rate that does not exceed 100c.
The "mAH" is capacity. The battery that comes with SwiftPaws home is 1500mAH and lasts 10 minutes. The one in the link is 6,000mAH (the bigger the number, the larger the capacity)