MJX F639 F39 Upgrade 7.4v 2200mah Battery
Small connector and primary wires.
This battery was billed as a replacement battery for the MJX F639 helicopter but hte connector type is incorrect. The battery does physically fit into the battery compartment though, just be ready to change out the connector.
Product Features
- MJX F639 F39 Upgrade Battery
- 7.4v 2200mah
Product Description
Description : This Li-po battery is 7.4v 2200mah. It also weights a little less than the stock battery and a is just slightly smaller.
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