I have a 2 D-cell device that uses the D-cells in parallel. I want to replace the D-cells with a 4AA parallel battery holder. This at Fasttech seems to fit but the diagram inside the case suggest the batteries get loaded in alternating fashion. Is it incorrect? I would think they all should be loaded in the same orinetation given the way the unit looks hard-wired.
That picture is of a 4 series holder.
Do you think I will get a parallel one if I order it? They call it a parallel holder. I thought it was wired for parallel but perhaps they used a series plastic case that came with the diagram on it? :~
If you order the one in your link you will likely get the 4P holder like the description. The one pictured is a 4S holder, but I bet they just used the same picture for several different holders.
Edit: At first look I thought it was a 4S holder. On second look it seems to be 4P holder with the insertion diagram of a 4S holder.
It looks like they used a 4S holder and they wired it 4P, but if you get it, I would check it out really close before using it. You know how these things go sometimes.
Yes. I agree. It’s picture of a series holder, but FastTech is famous for using one picture to represent several products that are similar.
Based on the pictures, it’s a 4S holder with the springs placed incorrectly. Look closely at the terminal bridges. I wouldn’t worry too much about it though; in the worst case you could easily wire it as a 4P holder with a little bit of soldering.
I think I can buy 4 single 1-A holders and more easily wire their leads together, right?
Item received and it is in fact a 4P holder! Just what I wanted.
I am using it to replace 2 D-cells that go in a portable air pump for a minnow bucket. I never seem to have fresh D-cells around but plenty of rechargeable AAs. I’m expecting my my runtime will be much shorter since the NiMHs have far less mAh capacity but I know I will have plenty of spares to swap out and/or recharge as needed.
Any tips to do even better? I know the NiMHs will be lower voltage and thus power the tiny DC motor slower (and thus lower air output)
