After some details of SLA weights and stuff

[blazerbotics]

I won't let anything less than ~80kg in my arena with a big flipper and then I would be watching carefully.

[craig_colliass]

Yes please let us know what you are getting as the batteries have to comply with the rules. the spec should say they are the gel type.

[daveimi]

OK I will post before I buy anything, it will be a few weeks off. And point taken Alan, I will rethink and get it to 100kg ish. How do people weigh their heavies?

[terry]

on your bathroom scales, or on the kitchen scales bit at a time, or at an event you can still compete if its a bit over in w/b anyway.

[terry]

a quick google search

http://www.ebay.co.uk/itm/CSB-EVX-12...ht_3540wt_1153

[daveimi]

That's great thanks terry. How many amp-hours do people get through in a fight? I only have 24V 10A wheel chair motors so can't see me using that much lol.

[geeza]

Typically 2.5 - 3Ah per fight, but that is with Bosch 750s

[daveimi]

Oh ok that's cool. So if someone had a couple of 22ahr batteries cabled to give 44ahr in theory you'd get through a whole even without recharging?

Has anyone tried something like 5000ahr NIMH packs in a heavy?

[blazerbotics]

You will find that current delivery is more the issue, rather than the capacity, hence the reason for paralleling up packs.

[geeza]

Mike used NiMh packs in Pressure, they are not quite as good as Nicads in terms of current delivery (in general). Stick with SLAs to start with unless you feel confident (and have the money) for A123 or Lipo batteries. Also think you will struggle to find 44Ah SLAs. I would suggest buying two sets of smaller 10-16Ah batteries, then put all of them in the robot to boost the weight.