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Pilot Check In
New(ish) Spark from Pennsylvania USA
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<blockquote data-quote="SirThomas" data-source="post: 83822" data-attributes="member: 16273"><p>The goal is once I get enough flight time to be comfortable, to see where else I might image. Got quote for repair and much better than I thought it was going to be. Enough so that I "spent" some of the savings on some of the great-deal batteries at local Target so that I can go further away from home and have more than one battery flight on it before returning for recharges.</p><p></p><p>BTW, on a slightly different note, I was wondering about using a USB power bank to recharge a spark battery using the spark's USB port. Any experience with these? What I wonder about are the losses. I would expect that USB 3.0 is required in order to source the current load required. But I also think there are two stages of losses here. Bank is sourcing USB3.0 (5v at 900mA max) from probably 3.7v batteries in it. Then the spark is also raising the 5v to 12v to charge the battery. So two sets of losses as voltage is boosted from 3.7 to 5 to 12. Any other EE types around to assist with answer here?</p></blockquote><p></p>
[QUOTE="SirThomas, post: 83822, member: 16273"] The goal is once I get enough flight time to be comfortable, to see where else I might image. Got quote for repair and much better than I thought it was going to be. Enough so that I "spent" some of the savings on some of the great-deal batteries at local Target so that I can go further away from home and have more than one battery flight on it before returning for recharges. BTW, on a slightly different note, I was wondering about using a USB power bank to recharge a spark battery using the spark's USB port. Any experience with these? What I wonder about are the losses. I would expect that USB 3.0 is required in order to source the current load required. But I also think there are two stages of losses here. Bank is sourcing USB3.0 (5v at 900mA max) from probably 3.7v batteries in it. Then the spark is also raising the 5v to 12v to charge the battery. So two sets of losses as voltage is boosted from 3.7 to 5 to 12. Any other EE types around to assist with answer here? [/QUOTE]
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Pilot Check In
New(ish) Spark from Pennsylvania USA