Different batteries in moped

[Ahmet]

Hello people!
I have my 2019 battery laying around and i ordered 3 new ones which are made in 2021.
When we measure my old battery it shows very good performance 80%. And it will reach 100% of its CCA within a few charges.
My question is can i use it with newer ones?
Do i really need to even them all?
My bike and batteries are attached down below.
My bike uses 4 of these 12v 24ah lead acid deep cycle batteries.
I don't have a device to charge only one battery so what can i do?
My old battery is 12v new ones should be 13 or somewhere around.

 

[Wrench]

Four 12v batteries = 48v @ 24ah I Think you should be fine if ya got one 48v 20ah or 30ah battery
IDK if you would have to use a different controller and hook up a display?
Since the bike is made for 4 sla 12v 24ah batteries. I would just buy those again.
In the end 4 sla 12v 24 ah batteries are gonna be way cheaper than buying an E bike bat.

BTW don't mix a new batteries with old batteries. Use all new batteries

 

[Ahmet]

Four 12v batteries = 48v @ 24ah I Think you should be fine if ya got one 48v 20ah or 30ah battery
IDK if you would have to use a different controller and hook up a display?
Since the bike is made for 4 sla 12v 24ah batteries. I would just buy those again.
In the end 4 sla 12v 24 ah batteries are gonna be way cheaper than buying an E bike bat.

BTW don't mix a new batteries with old batteries. Use all new batteries

I think I couldn't express myself. Sorry.
Nothing is being upgraded on the bike everything is same. Bike needs 4 24ah batteries and im putting in 4 24ah batteries. Only thing is one of them is made in 2019. And will have no difference than the other 3 batteries after a charge or two.
I am only worried about its voltage it is 12 volts because it is sitting for 3 years and others are 13 because they are new. Now if i connect them to bike and drain them and charge them will they be at the same voltage or do i need to get them all to 12v and charge them evenly before even putting them into bike?

 

[Wrench]

Bad Idea Ya gotta use all new batteries The old battery will hurt the new batteries Don't use one old battery with 3 new batteries.

 

[Ahmet]

Bad Idea Ya gotta use all new batteries The old battery will hurt the new batteries Don't use one old battery with 3 new batteries.

Well thank you there!