These batteries are a drop-in replacement in all the quadcopters listed above, no modifications necessary. They also include the correct Walkera-type connector for both the X4 and the Kodo plus an integrated overcharge protection circuit, so they're completely plug-and-play compatible with both quads and the chargers that come included with them.
The 450mAh capacity means you'll get nearly 20% more flight time than the standard 380-390mah batteries for these quads, and the 30C discharge rate means this battery will be able to provide that extra boost of power when you need it most.
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