Moving to Lithium

**psychostorm** · 10th May 2011, 19:05

Originally Posted by mattsdragons

I thought that was the same with all batteries?

Not a written rule, more of an unwritten rule. It's listed in many a battlebots build guide to make batteries removable within 1 minute.

**mattsdragons** · 10th May 2011, 19:07

so they can be left in if you please? but its better if you remove them since if they catch fire, its only the batteries what will go and nothing else inside your bot?

**typhoon_driver** · 10th May 2011, 19:25

7.8.5 Inspection
LiPo batteries must be removed from the robot, inspected and placed into a LiPo sack prior to and during
the charging process.

It's a written rule.

**psychostorm** · 10th May 2011, 20:48

Originally Posted by mattsdragons

so they can be left in if you please? but its better if you remove them since if they catch fire, its only the batteries what will go and nothing else inside your bot?

Allow me to clarify:
All Lithium batteries have to removable, as stipulated by the FRA rules.
All non-lithium batteries can be charged in the machine , but is advised to be removable for precisely that reason.

**robotic_ants** · 10th May 2011, 21:13

What sort of Ah would you need for a big spinner like LS4 or Buzzbar? Still not confident what size of LiPo to go for.

**typhoon_driver** · 10th May 2011, 21:14

I use a 4Ah pack in boner and they use about the same

**PJ-27** · 11th May 2011, 09:17

Thanks for the offer of help Gary, I haven't got MSN though so I'll collect info through other means of pestering..

I thought Li-Fe was more powerful than Li-Po but more stable?

We plan on giving Bitza a spinning weapon, so there will be quite a draw there.

**leorcc** · 11th May 2011, 09:49

Originally Posted by PJ-27

I thought Li-Fe was more powerful than Li-Po but more stable?

No, because they are more stable the amount of energy per gram is less than with Lipo.

**typhoon_driver** · 11th May 2011, 10:27

Even with a spinning weapon you won't empty a lipo pack unless it is a very small pack. I could happily get five fights out of the pack in boner, maybe six, before charging if I want to.get yourself a five cell, four ah pack and you will have no capacity or current draw issues. Just follow all the safety guidelines in the rules and use a decent charger