Firstly, please put the battery case along this slider horizontally (as Fig 3), then push it into and ensure a snug
fit. Second, make sure the battery pack is firmly pushed into the controller housing and its connector is
securely inserted inside the controller box.
Notice the battery lock (Fig. 4.1,4.2)
(Fig. 2.1)
(Fig. 3)
Fig. 4.1
(Fig. 2)
Fig .4.2
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