From the graph and table below you can see that the best bang for the buck in the battery world with what we had tested is the Eclipse battery form JayCar - here
These batteries as by the far the most cost-effective and have a very good run time when compared to other more expensive batteries.
The big note here is to absolutely not touch every ready general-purpose battery or every ready heavy-duty...as they are very low performers.
The firmware version used in the gates was v1.13 of using the power at a rate of 48 mA an hour. The new low power version available 1.41 uses only 12 mA per hour, which means you will get 4 times the life out of the same batteries.
As the majority of AA recharge batteries are 1.2 v compared to a normal battery of 1.5 v, The combination of 4 x AA recharge batteries means you have 4.8 v with a brand new set. The minimum voltage required by the gates is 4.39 v so you are already close to the margin before you have started. So then the cost and benefit are not looking good for using recharge batteries. This is why we do not recommend you invest in them and the charger etc.
Performance and cost table
|Performance||Brand||Cost/battery||Hours Run time (old firmware v1.13)|
|1st||energizer ultimate lithium||$4.68||68|
|8th||everyready general purpose||$0.95||4.8|
Graph of performance by brand
The red dotted line is the minimum power of 4.39 v that the gates require to operate.