The Innokin Trine Replacement Battery is compatible with the Innokin Trine Q Pod Kit. This battery can be purchased if the original one included in the kit gets damaged or if you want to have multiple batteries on the go at once to avoid downtime.
The battery has a capacity of 1050mAh and should last up to 2 days. You can recharge it by placing it into the Trine Q and using a USB-C cable (just like charging a device with a built-in battery) or, you can use the Innokin Trine Power Hub which can charge up to 2 Trine batteries at once.