Batteries

[terry]

the 6s lipos are gone now.

[supernova]

I went for 6s, 5ah 50C optipacks so 12s 10ah in the robot. Gonna see what the voltage drop is like when I turn the big motor on to see if I need more burst current.

Xt90 connectors

What cable would you recommend I use?

Thanks for the soldering iron advice.

[maddox10]

15a per mm2 max as a guideline . The 2 Bosch 750's are 80a together , the big brute for the disk 80a on its own.
I would use 2x6mm2 at least. Just because I have a supply of 6mm2.

[supernova]

I can see that the battery packaging is getting damaged. What have you guys done to toughen up the packaging? Heat shrink?

[maddox10]

Most of the time I ducttape those in a shockmounted snug fitting selfmade aluminium case.

[adz600]

i always build a box with an open top and put at least 10mm padding on all the edges and in-between each battery pack, I have been running the same two optipower lipos for nearly two years and both still look good as new, they hold there charge and balance so well great lipos

[typhoon_driver]

I made a battery cradle from 8mm foam then wrapped this in duct tape. Keeps the batteries padded but still allows them to be removed for charging. The foam came from a £4.99 camping mattress mat from argos.

[IceMaster]

It is covered mainly in the feather topics.
If you want more peak load capacity, 6 packs of these wil give you 37V 15Ah and a whopping 1050Ah of burst load.

Do not Take the Turnigy nano-tech 5000mah 5S 35~70C Lipo Pack

http://www.hobbyking.com/hobbyking/s...dProduct=32264

Better take a lighter and burn the money equal, I wanted to use these cells in Lucifer, No Load Amp, run engines free Perm080 and the Akku Packs Total Damage, the voltage breaks at first Total on Undervoltage Level and the Akku Cells all Dead, no longer possible to invite Total inflate!

Better more Money for Good Akku Cells this,

http://www.mylipo.de/HV-Lipo-4000mAh-259V-7S-45C-90C

http://www.elektromodellflug.de/mylipo-hv-425.php

oder this...

http://www.optipower.co.uk/Catalogue...%20ULTRA%2050C

[maddox10]

Bullfrog uses these with good succes. Only 37V 5000mAh total.
But 5000mAh is not enough for a longer fight. We're now going for the 8000mAh Zippies.

[leorcc]

I have also moved away from Nanothechs; I prefer the zippy's. The Nanothechs do well in bursts but puff up for no good reasons. The zippies have a lower burst rate but perform better over time.