How many batteries do you take to competitions?

[Mark McLeod]

We brought 6 batteries this year, but one failed during competition.
In the Finals we were running short of charged batteries and had to borrow. Unfortunately, we were loaned a discharged battery.

[gwatton]

This year we took 4 legal batteries for field use and two or three old practice batteries. We barely made it by with just the four at Las Vegas this weekend. We had to borrow a few for the elimination rounds. We try to take four chargers as well. We are definetly going to get some more for next year.

We also had a problem with batteries going bad. They seemed to work fine beforehand, but once we got on the field they died almost immediatly. The only way to prevent this is to run them in practice or old robots before competition.

[smurfgirl]

We've usually got at least 6/7 legal batteries in circulation for matches, with other "illegal" batteries for practicing so that the competition batteries can charge. We also bring at least 6 chargers to match.

In the past, we've lent out batteries to other teams when they were in need.

[Chris Marra]

This year we brought 4 old chargers and 4 legal batteries to UTC, but somehow misplaced one of them during qualifications and it was never returned. We also brought 2 old batteries and the new charger for our scissor lift and testing.

Although this year we had enough chargers to keep everything on all the time, we still ran them through a battery efficiency tester to rank them, and then named them. Homer, Barney, Bart, Mo, and Carl if I recall correctly.

[roborat]

we take 6 and have 4 chargers along with about 6-8 back up batteries. Rotate the out each match and keep them charged.