Scientific Investigation – Which Battery Lasts Longest?

We wanted to find out which brand of batteries last longest.

by SabrinaSabrina’s avatar

sciinv1batteriesintorch

Photographs by Sheri. sherry

What we used:

We used three different brand of batteries: Eveready, Coles and Varta.
And we used torches that were the same.

by Susan Susan’s avatar

sciinv2turnontorches

 

Hypothesis:

Most of us predicted that the eveready battery would last the longest because of the ads on TV. Kyle predicted that the Varta battery would last longest.

Method:

We switched on all the torches at the same time. We recorded what time we turned on the torches.

by Emeline Emeline’s avatar

Results:

 

 

The Coles battery ran out first.

by Cecilia.Cecilia’s avatar

Eveready lasted next. Eveready lasted only for 13 hours.

By:Jen.Jenny’s avatar

 

 

The Varta battery lasted longest.

by VickyVicky’s avatar

 

 

 

Battery Life graph

Graph by Jenny.

 

Coles lasted for 3 hours.
The Eveready battery lasted for 13 hours
and the Varta ran out after 16 hours.

by Wally

Wally’s avatar

How much does it cost to run each battery per hour?

table battery/hour

The results are that the Coles battery was the cheapest battery but costs more money than the other batteries per hour. Per hour Coles cost, 62 cents.

Jenny’s avatar

by Jenny

The Varta battery lasted longest but it costs the same amount as the Eveready battery per hour. They both cost 15 cents per hour.

by Sheri Sheri’s avatar