Battery Choices for Missleworks Altimeter

race 58 · Sep 16, 2014

Which one would be best for the RRC2+ or will they all work?

https://www.hobbyking.com/hobbyking...uits_FBL100_and_Blade_mCPx_AR_Warehouse_.html
https://www.hobbyking.com/hobbyking...h_130mAh_1s_15c_Round_Lipo_AR_Warehouse_.html
https://www.hobbyking.com/hobbyking...s_Nine_Eagles_Solo_Pro_100_AR_Warehouse_.html
https://www.sparkfun.com/products/10718

Thanks
Ed

g zilla · Sep 16, 2014

regular alkaline battery works for me

Bat-mite · Sep 16, 2014

I use a plain old 9V alkaline, but of course it adds weight.

Rocket86 · Sep 16, 2014

According to MissileWorks, RRC2+ is best powered by 9V but can work on as little as 3.5V. I use rechargable lithium "9V" batteries with mine. They are about 8.4V fully charged, hold a charge for a long time, and are about 25% lighter than an alkaline 9V and fit in the same space. I've left the altimeter turned on and beeping for over an hour after a DD flight and voltage dropped less than .1V.

race 58 · Sep 16, 2014

Thanks guys but let me re-phrase the question because I see wasn't clear.
I want to use the Lipos for my project so I'm asking which lipo would suit me the best. I using it on a 29mm SMART Sled.
https://www.missileworks.com/store/#!/29mm-S-M-A-R-T-Sled-for-RRC2+/p/39517483/category=9045099

g zilla · Sep 16, 2014

If the altimeter can work as low as 3.5 v and the lipos have a max of 3.7 v I would say no

Rob Campbell · Sep 16, 2014

g zilla said:
If the altimeter can work as low as 3.5 v and the lipos have a max of 3.7 v I would say no

3.7V is the nominal voltage for a LiPo cell. The max voltage is 4.2V and min is 3.0V. LiPo chargers have a safety feature that will not allow you to charge a LiPo that is below 3.0V per cell.

Rob

MWC · Sep 16, 2014

Ed -

The Smart Sled is specifically designed the 400ma Li-Ion cell you URL'd above.
https://www.sparkfun.com/products/10718

All those other batteries would work, but you'll have fitment issues in the SMART Sled
The battery slot accommodates a 5mm x 25mm x 35mm form factor.
None of the other batteries would fit.

race 58 · Sep 16, 2014

Thanks Jim,,

I tried to call you today about it but the answeing machine was giving out a message to acspecific party.
I have a couple other questions so I will try again tomorrow.

Ed

MWC · Sep 16, 2014

Ed -

Out until next Tuesday (sorry) as I'm driving out to BALLS.
I can check in on the forums.

race 58 · Sep 17, 2014

OK Jim,,

I'll get my questions to you later.

Sparkfun just got thru moving to their new location so it will be awhile before they catch up with orders.

Ed

stealth6 · Jan 5, 2015

Heads up folks, looks like the recommended LiPo from Sparkfun is finally back in stock.
See here: https://www.sparkfun.com/products/10718

I know lots of folks have been waiting for these for a long time. Here you go.

s6

Battery Choices for Missleworks Altimeter

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