You could just use your car battery charger Simon. Most of them support 3 cell LiPos. Dont know what the DJI charger is like, but the one from my quad went straight onto the scrap heap of stuff i will never use!
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Tom
TLR 22-4 2.0, TLR 22 5.0 AC Elite,
Kindly Supported by Trackside Spares, TLR, Spektrum and Horizon Hobby
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