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4hv.org :: Forums :: General Chatting
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Lipo battery use?...

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currentkills91
Sun Jun 12 2011, 04:08AM Print
currentkills91 Registered Member #3831 Joined: Thu Apr 14 2011, 02:54PM
Location:
Posts: 265
Would it be okay to use a lipo battery to run a zvs driver? I know that lipo batteries are very dangerous things to mess with, so yeah. I wanna ask before actually buying one and a charger just to have it fail miserably...
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Ken M.
Sun Jun 12 2011, 04:19AM
Ken M. Registered Member #618 Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
I wouldn't use any reacable batteries for zvs out side a lead acid.
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currentkills91
Sun Jun 12 2011, 08:12PM
currentkills91 Registered Member #3831 Joined: Thu Apr 14 2011, 02:54PM
Location:
Posts: 265
Hmm...that was going to be my first choice, but there's just no room in my design for a battery that big. I also want at least 16 volts, so I was going to use an 18.5v li-po battery. I know there's protection circuitry I can build for them, but I don't know what that circuitry is. Anybody have any ideas?...
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Forty
Sun Jun 12 2011, 09:21PM
Forty Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
try using a cordless drill battery
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currentkills91
Sun Jun 12 2011, 09:53PM
currentkills91 Registered Member #3831 Joined: Thu Apr 14 2011, 02:54PM
Location:
Posts: 265
I would but those are still too big, I need a way to be able to use a li-po battery. I'll dig around for some protection circuitry...
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Adam Munich
Sun Jun 12 2011, 11:21PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Basically you put a mosfet in series with the load, and then use a schmitt trigger to monitor the battery and turn the mosfet off when the voltage drops too low.
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Dr. ISOTOP
Mon Jun 13 2011, 05:00AM
Dr. ISOTOP Registered Member #2919 Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Lithium batteries will destroy themselves if their voltage drops too low, but it shouldn't kill you or anything.
Also, don't short them.
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currentkills91
Mon Jun 13 2011, 05:41AM
currentkills91 Registered Member #3831 Joined: Thu Apr 14 2011, 02:54PM
Location:
Posts: 265
Yeah, I know all the dangers involved with li-po batteries, I just wanted to make sure it was okay to use them for a zvs driver. :)
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Forty
Mon Jun 13 2011, 04:12PM
Forty Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
get one designed for RC planes/helicopters that is designed for the kind of current draw that you will need for the zvs
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Adam Munich
Mon Jun 13 2011, 04:26PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
The turnigy batteries at hobby king are nice, and the prices can't be beat. I just bought two for my x-ray machine.

Make sure you get them from the USA warehouse or they'll take a month to arrive.
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