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TOPIC: Battery packs and lipo options

Battery packs and lipo options 1 year 4 months ago #51

Found these Tattu 26Amp Hour battery packs as sold be Gensace.de and wondered what you guys thought they are not cheap but do make for a manageable battery module will try cut n paste the correct link once I find it again ..

www.gensace.de/lipo-26000mah.html

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Last Edit: by Wannabeaflyer.

Battery packs and lipo options 1 year 4 months ago #59

My opinion they seem extremely expensive. If you're looking for large battery packs, you can find some considerably cheaper at Hobbyking: hobbyking.com/en_us/multistar-high-capac...rotor-lipo-pack.html
But keep in mind that you instead can choose to put several smaller packages parallel. I use up to 12 x 6S 8000mah (22.2 volt) batteries. 3 in series and 4 in parallel. Also called 3S4P. It gives me 32.000mah 66.6 volt.
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Last Edit: by Gamba.

Battery packs and lipo options 1 year 4 months ago #60

Hi Good buddy , that's the sort of feedback im looking for , did not see these at hobby king but they seem a good deal , I have a collection of battery packs all brand new and yet to be used in anger ( will have to wait till the new motor and mount is made) ,

my current batteries are 2 x 10Amp 6s ( Alien Flat packs ) & 2 x Hobby King 6S 5Amp units Just got my XT60 anti spark connectors, so will be changing the plug on the batteries to these over the next few days finger crossed .

How much does your 12S 3P battery weigh ? and what size connectors and wires did you use, at the moment I went for the XT60 based on some info I saw, on lasersabre video .and will use maybe 10Awg or 8Awg silicon wires for battery harness and connection to ESC ?

Thanks again for the feedback and those batteries you linked me to could be a good choice down the road .. Cheers

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Last Edit: by Wannabeaflyer.

Battery packs and lipo options 1 year 4 months ago #61

You should be aware of the low C value that the large Hobbyking batterys has. It is the C number that tells you how much amp they can discharge (10C = 10 times it's capacity). Hobbyking's large packages can only provide 10C (20C burst). This can be a problem... but not necessarily.

Because you need to put multiple batteries in series, you can only use bullit connectors between the batteries. Most larger batteries (about 4000mAh and bigger) is using 6mm. bullet connectors and 10AWG wires. From the big battery pack to the ESC I use 8AWG and 8mm. connectors. I have designed and 3D printed my own connector that fits 8mm. bullit connectors


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Last Edit: by Gamba.

Battery packs and lipo options 1 year 4 months ago #63

Hi Bo , once again thank you and also for finding a use for my 3d Printer LOL , I was going to buy some XT150 connectors for the battery side plugs and have to say nice work regarding the design and 3D printing ... also the 8Awg will be bought for these connectors will spend lunch time checking the specs to make sure .. At some point soon I should start giving you guys some useful info :-) at the moment I admit I'm a sponge soaking it all in but will soon turn that table around ...Cheers

Ok Quick Update it looks like you were correct again ( never doubted that :-) and will need to use 8MM Gold connectors as the XT150's are only 6mm and doubt if I would get a decent solder joint trying to squeeze the wire into the Plug..
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Last Edit: by Wannabeaflyer.

Battery packs and lipo options 1 year 2 months ago #139

Hi Bo.. nice work on the connector. I'd love to get some made for the 7 mm anti spark connectors we are using. We put them on both pos and neg so there's no spark regardless of which terminal touches first. here they are at hobby king: hobbyking.com/en_us/7mm-as150-anti-spark....html?___store=en_us . Also, I've used the Turnigy 6s 16 Ah graphene batteries but find the interconnections too cumbersome. we have gone to 14S batteries for the simplicity.. more later on that.

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Battery packs and lipo options 7 months 1 week ago #598

Hi Guys just searching around to see whats what out there battery option wise as i'll soon be trying to put together a decent size pack for testing ( once I get My parts back form Bruno ) anyways in the search for options I came across this on the Endless sphere Forum endless-sphere.com/forums/viewtopic.php?f=14&t=69856 I know they are A123 Pouches and still expensive but there was some useful info to considered ..and thought it may be of some interest to members ---(or Not LOL )
typically 44.4v for testing and aiming for 66.6 for flight circa 20amps minimum .. 12-18S 2P configuration and using cell loggers for basic BMS type management .. would be great to hear what configurations you guys settled on and maybe we can post photos / Sketches I a under this section for general reference by all users .. at the moment I have 2X10amp 6s flat packs ( ref Alien powersystems ) and 2 X 5Ah Zippy 6s packs ... at best it looks like i'll get 44.4 @ 15 amps but means motor speed will be below ideal , but good enough to get some sound ground test data :-)

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Battery packs and lipo options 4 months 4 days ago #842

Hi Bo... I'd like to get some of your 3d printed connectors... do you have the time to print some up and send them (for a fee of course), or can you make the 3d file available? thanks

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Battery packs and lipo options 4 months 4 days ago #844

My 3D printer is unfortunately not working now. The controler board is burned and must be replaced. But you can download the files here: www.thingiverse.com/thing:2094019

I don't use these connectors anymore myself. The connectors keep falling out of the socket, which is annoying... and they do not have anti spark built-in.

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