I fly a Saber X51 for sport, and have used a couple of Admiral 4Ah 4S batteries in it for a couple years, and they power it pretty well. I recently bought a Graphene 4Ah 4S battery for it, just to compare. I'm using a Castle Creations ESC, which records current, Voltage, rpm, etc., which I find rather useful. During a recent trip to the field, I flew the Saber four times, alternating between the Graphene and Admiral. The first three flights, after I took off, I turned down wind, slammed the throttle, and went vertical; the last flight I slammed full throttle right after lift off, going vertical, to get a sample of a max performance take off with the Admiral as fresh as possible. Results: the recorded data shows I had ~10% more power available with the Graphene, even with the somewhat fresher Admiral on the last flight; verticals were just stronger, too.
Battery specs:
Admiral: 14.1 oz. Dimensions, allowing for cable fit - 135x42x33. IR by cell - 4.52, 4.72, 5.52, 5.60
Graphene: 17.6 oz, Dimensions - 150x50x35. IR - 1.85, 1.92, 1.88, 1.88
In spite of the extra 3.5 ounces, the higher Voltage from the Graphene due to the lower total IR made for much better verticals and acceleration. Because of the increased size, they will not fit in my FMS P51, though; something to consider when looking for a better performing battery. I'm hoping the new Admirals are comparably better than my current ones in power delivery. My battery box is currently full, however, so until I wear out or destroy a few, that test will have to wait.
Battery specs:
Admiral: 14.1 oz. Dimensions, allowing for cable fit - 135x42x33. IR by cell - 4.52, 4.72, 5.52, 5.60
Graphene: 17.6 oz, Dimensions - 150x50x35. IR - 1.85, 1.92, 1.88, 1.88
In spite of the extra 3.5 ounces, the higher Voltage from the Graphene due to the lower total IR made for much better verticals and acceleration. Because of the increased size, they will not fit in my FMS P51, though; something to consider when looking for a better performing battery. I'm hoping the new Admirals are comparably better than my current ones in power delivery. My battery box is currently full, however, so until I wear out or destroy a few, that test will have to wait.
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