I've looked up your drone; it appears to use a 1S battery with the "flat" variety of micro power connector (which I unfortunately couldn't find the proper name of).
Besides amping up the USB charger that your drone came with, there's a class of chargers that offer some of the best charging rates for small 1S batteries, and those are constructed for tiny whoop owners. They usually look something like this:
These things can independently charge several batteries and usually provide far greater charge currents than most USB chargers, often achieving full charge in minutes. There are countless variations, but the design is mostly the same: a PCB with several small battery connectors on one end which you plug your small 1S batteries into, and an XT60 or other higher-power connector on the other, which you plug either a power supply or a bigger 3-4S LiPo/LiIon battery into. Thanks to the very good power delivery capabilities of LiPo batteries, these chargers offer the same performance when battery-powered as when powered from mains (and sometimes even more, as some mains power supplies might actually provide less current than a lipo will).
Something like this would probably be a perfect field charger for your quadcopter as well, if not for one little compatibility problem: these chargers are made for "rectangular" PH2.0 connectors and you've got the "flat" ones.
If you're willing to wait a tiny bit, though, there's plenty of adapters for that sort of thing on the market that you can order, or even make some adapters yourself by getting a bunch of pre-crimped connectors of both types (also readily available, especially on chinese sites) and soldering them together.