KurtVD
lvl.4
Flight distance : 365299 ft
Switzerland
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Cookster670 Posted at 2018-2-3 12:03
He says “increases by up to 15 minutes”. I get about 12-13 mins, so that’s more than double. I am skeptical. But IF it worked and IF you were willing to void warranty (or after 1 year), then it may be worth it for those with the skills and balls. Which is probably not me. Lol
His claim that he's able to fly up to 15 mins longer just can't be true, it's probably more like 5 mins more. In the video, it can clearly be seen that the battery he's adding is labelled 850 mAh, and the Spark has a capacity of 1480 mAh. So he's adding less than 60% (57%) to the original capacity, but it's not going directly to the motor, the add-on battery first charges the Spark battery, so I guess there's a little loss there. But let's be optimistic and say that 55% of that gets to the battery, so power-wise, he would get about 7 mins of additional flying time, which would give him 19-20 mins in total, optimistically. However, the added weight will shave off a significant amount of that, so my guess is not more than 17-18 mins, plus he has less agility and precision while manoeuvring. Definitely not worth it... |
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