Stacked Batteries...alternate position in the PV

[retird]

A natural phenomenon takes place in a stack that many cannot explain. The battery closest to the load will discharge quicker than its counterpart. Many theories have materialized over this, but for all practicality, we know it occurs and will leave it at that (in this discussion). You should alternate your batteries in subsequent uses. e.g. If A1 was used on top, A1 should be used on the bottom next time the set is used, and back on top for the following use, and so on, and so on... This will insure a greater distribution of the workload and a more natural and even build up of internal resistance, extending overall battery life. Think of it as rotating the tires on your vehicle, wearing them out evenly.

 

[carlton M]

Thanks for the info!
Now for a question for the less evolved (ie: Me)- can you rotate them mid use? Like put the top one on bottom when it is half drained?

 

[DaveP]

Thanks for the info!
Now for a question for the less evolved (ie: Me)- can you rotate them mid use? Like put the top one on bottom when it is half drained?

I'll let someone else with more battery theory knowledge answer that question competently, but will mentioned that thermal runaway seems to start when one battery is much lower than the other and reverse charging occurs. It would be a good idea to charge frequently and not run the batteries down too far. Keep them as close in voltage as possible to prevent problems. It makes sense to swap positions before one gets too low, IMO.