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Opinions on the Multistar low C batteries

Started by stickboy, Sunday,November 09, 2014, 19:52:16

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stickboy

I';ve been looking into buying some of these new batteries rated at a 10C constant and 20C max burst from Multistar. Was hesitant at first but after watching their video I think I might be convinced. The guy explains how the math works out to give a constant ~50A draw which is well good enough for anything I fly (740kv and 900kv tigers) and it just makes sense with what I';ve been experiencing. As an engineering student (GO BEAVERS!) I can';t figure out why everybody is putting high amp ESC on motors that only draw 18-22A at full throttle so these batteries just make sense to what I';m experiencing in actual flight.

So what do you think? Anybody flying at these low C already? I';m looking to make an X8 with my mt4008 tigers that';ll fly 30 minutes so I want to make sure I';m not blowing money on these Multistars.

guest325

The answer is quite simple, it';s just maths.
5000 mah batteries @ 10C will give you a max load of 50A; 20C, 100A etc work out what you need PLUS a safety factor of whatever you';re comfortable with (I go for 50%) and there';s your answer.
With regards to the esc';s headroom is not a bad thing,  these esc';s are not always giving out what they are rated at - unless you buy expensive ones like Jeti or Castle creations you can';t be 100% sure that they will do what they say they will!

stickboy

Well I';m using the S25A Tiger ESC so I hope their trustworthy enough. I generally try to stick with everything Tiger from their professional series.

So if I';m drawing 18A at 100% throttle, then the 8000mAh 10C 4 cell should do the trick, right? Sounds like I';m definitely not going to be able to use it for the X8, but thinking I';ll buy two to put in parallel.

guest325

Probably be OK but I would be more inclined to get 20C 8000mAh.

tectic

From the opinions I have read online
I have read they are working fine but due to them being a cheaper battery they are not physically lasting very long
I have read reports about them puffing quite quickly and not regenerating there charge for many cycles
I have one my self but have not actually tried it out yet as I need to swap the battery connector.
650-Hexa-copter, 450-Quad-copter,Xugong 10 Quad-copter