<div class="gmail_quote"><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">For all intents and purposes, a 9v DC source should be all that is needed to charge this pack.</blockquote>
<div> </div><div>I don't know specifics, but I'm inclined to believe that isn't the case. The protection circuits are only there to prevent overcurrent and over/under voltage conditions. They don't do any charge current regulating and I'm pretty sure LiPo cells want that. At least, I do know that even though all of Sparkfun's single cell battery packs have protection circuits, they always say you need a lipo charge circuit and I've never heard anything about charging a LiPo off straight DC. Given how handy that would be, I'm inclined to believe I would have heard something about that.</div>
<div><br></div><div>So like I said, I don't know anything for sure, but if you don't either, then there's probably more to it. Either way its something you should definitely be sure of before trying.</div><div>
<br></div><div>-Taylor</div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> As long as you only need to provide 7.4 volts at 8 amps, you should be fine. This pack only has two leads. That's for voltage in and out. No LIPO charging equipment required. My expectation is that there is some circuitry in the pack that does this for you. <br>
<br><div class="gmail_quote">On Wed, Sep 14, 2011 at 11:04 AM, William Garrido <span dir="ltr"><<a href="mailto:blackspartan117@gmail.com" target="_blank">blackspartan117@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
Nice! This would be great to drive my motors. I doubt my charger for LiPo would work, anyone know if a small LiPo charger for 2S? I have my chargers embedded on my robot.<div><br></div><div>Or even my MC, would get rid of the need for a stepup! Too bad its not 6AH. </div>
<div><br></div><div><br><div class="gmail_quote"><div><div></div><div class="h5"><div><div></div><div>On Wed, Sep 14, 2011 at 10:10 AM, Corey McGuire <span dir="ltr"><<a href="mailto:coreyfro@coreyfro.com" target="_blank">coreyfro@coreyfro.com</a>></span> wrote:<br>
</div></div></div></div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex"><div><div></div><div class="h5"><div><div></div><div>
Need to replace NICAD/NIMH packs, but are afraid of the complexity of LIPO or added charger cost? This pack might fit your bill.<br><br><a href="http://www.hobbyking.com/hobbyking/store/__19481__Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack..html" target="_blank">http://www.hobbyking.com/hobbyking/store/__19481__Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack..html</a><br>
<br>Sparkfun and other places have single cells that have such cutoff circuitry to protect your single cell from being charged too high or discharged too low, but this is the first 2S solution I've seen. 2S LIPO is a sweet spot because it nearly perfectly matches the voltage characteristics of 6 Cell NICAD/NIMH packs, which are common everywhere. This could be a drop in replacement for such needs.<br>
<br>One draw back, it appears to provide only 8 amps of current. This is, no doubt, because the circuit that regulates charge is in line with whatever you plug it in to.<br></div></div></div></div><font color="#888888">
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